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<h3>
Marge Bot pushed to branch wip/marge_bot_batch_merge_job
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fe859d16305d379ffa595c0bd8569e227a9273d4">fe859d16</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-07-30T00:50:55-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">For `-fkeep-going` do not duplicate dependency edge code
We now compute the deps for `-fkeep-going` the same way that the
original graph calculates them, so the edges are correct. Upsweep really
ought to take the graph rather than a topological sort so we are never
recalculating anything, but at least things are recaluclated
consistently now.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/470d62382e9094b267dff2209b7e0e48d65edb9a">470d6238</a></strong>
<div>
<span>by cgibbard</span>
<i>at 2020-07-30T00:50:55-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add haddock comment for unfilteredEdges
and move the note about drop_hs_boot_nodes into it.</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6773fe0d899914621a9a5b430ab7972806211c2b">6773fe0d</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2020-07-30T00:50:55-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Clean up the inferred type variable restriction
This patch primarily:
* Documents `checkInferredVars` (previously called
`check_inferred_vars`) more carefully. This is the
function which throws an error message if a user quantifies an
inferred type variable in a place where specificity cannot be
observed. See `Note [Unobservably inferred type variables]` in
`GHC.Rename.HsType`.
Note that I now invoke `checkInferredVars` _alongside_
`rnHsSigType`, `rnHsWcSigType`, etc. rather than doing so _inside_
of these functions. This results in slightly more call sites for
`checkInferredVars`, but it makes it much easier to enumerate the
spots where the inferred type variable restriction comes into
effect.
* Removes the inferred type variable restriction for default method
type signatures, per the discussion in #18432. As a result, this
patch fixes #18432.
Along the way, I performed some various cleanup:
* I moved `no_nested_foralls_contexts_err` into `GHC.Rename.Utils`
(under the new name `noNestedForallsContextsErr`), since it now
needs to be invoked from multiple modules. I also added a helper
function `addNoNestedForallsContextsErr` that throws the error
message after producing it, as this is a common idiom.
* In order to ensure that users cannot sneak inferred type variables
into `SPECIALISE instance` pragmas by way of nested `forall`s, I
now invoke `addNoNestedForallsContextsErr` when renaming
`SPECIALISE instance` pragmas, much like when we rename normal
instance declarations. (This probably should have originally been
done as a part of the fix for #18240, but this task was somehow
overlooked.) As a result, this patch fixes #18455 as a side effect.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/69e700550c9667baaf9a5673a6b578bc3b39b2f9">69e70055</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2020-07-30T00:50:56-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Don't mark closed type family equations as occurrences
Previously, `rnFamInstEqn` would mark the name of the type/data
family used in an equation as an occurrence, regardless of what sort
of family it is. Most of the time, this is the correct thing to do.
The exception is closed type families, whose equations constitute its
definition and therefore should not be marked as occurrences.
Overzealously counting the equations of a closed type family as
occurrences can cause certain warnings to not be emitted, as observed
in #18470. See `Note [Type family equations and occurrences]` in
`GHC.Rename.Module` for the full story.
This fixes #18470 with a little bit of extra-casing in
`rnFamInstEqn`. To accomplish this, I added an extra
`ClosedTyFamInfo` field to the `NonAssocTyFamEqn` constructor of
`AssocTyFamInfo` and refactored the relevant call sites accordingly
so that this information is propagated to `rnFamInstEqn`.
While I was in town, I moved `wrongTyFamName`, which checks that the
name of a closed type family matches the name in an equation for that
family, from the renamer to the typechecker to avoid the need for an
`ASSERT`. As an added bonus, this lets us simplify the details of
`ClosedTyFamInfo` a bit.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/82118f84f971088424b16008413f4d003e932786">82118f84</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-30T00:50:56-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove an incorrect WARN in extendLocalRdrEnv
I noticed this warning going off, and discovered that it's
really fine. This small patch removes the warning, and docments
what is going on.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2545583198d1eda0c21f62ebf704ee113df56bb8">25455831</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-30T00:50:56-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add two bangs to improve perf of flattening
This tiny patch improves the compile time of flatten-heavy
programs by 1-2%, by adding two bangs.
Addresses (somewhat) #18502
This reduces allocation by
T9872b -1.1%
T9872d -3.3%
T5321Fun -0.2%
T5631 -0.2%
T5837 +0.1%
T6048 +0.1%
Metric Decrease:
T9872b
T9872d
</pre>
</li>
</ul>
<h4>26 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#783e5dae6e86931f06700fc088fb7d48c8a07386">
compiler/GHC/Core/Coercion.hs
</a>
</li>
<li class="file-stats">
<a href="#1dab250036d04cfcf3530f6ff27889f723cc2dda">
compiler/GHC/Driver/Make.hs
</a>
</li>
<li class="file-stats">
<a href="#018be522bc4813b147a1525e4f96a7a493207d96">
compiler/GHC/Hs/Type.hs
</a>
</li>
<li class="file-stats">
<a href="#af762064d779f7308dd415966c974f27d14f9943">
compiler/GHC/Rename/Bind.hs
</a>
</li>
<li class="file-stats">
<a href="#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2">
compiler/GHC/Rename/Expr.hs
</a>
</li>
<li class="file-stats">
<a href="#892acbb198a9095c917740d3c1297b56df4e3b7e">
compiler/GHC/Rename/HsType.hs
</a>
</li>
<li class="file-stats">
<a href="#7dd1cd0f6f2164a14c83d9aa564dd32bc30e447a">
compiler/GHC/Rename/Module.hs
</a>
</li>
<li class="file-stats">
<a href="#cfa41b5649933e5b12f7796e9d49b9dd6a0bc59f">
compiler/GHC/Rename/Pat.hs
</a>
</li>
<li class="file-stats">
<a href="#939d24c1002dc322659c1f67c9f3d2db2ae31dd4">
compiler/GHC/Rename/Utils.hs
</a>
</li>
<li class="file-stats">
<a href="#aebe2c3d616f6843166d2657bed048898add6bc9">
compiler/GHC/Tc/Instance/Class.hs
</a>
</li>
<li class="file-stats">
<a href="#83d23a46bb6cdc8b1edc16f1fd2c8f5c53e2c9ca">
compiler/GHC/Tc/TyCl.hs
</a>
</li>
<li class="file-stats">
<a href="#03e77c5a7f093768fb8c3be51f8c4ece06b78463">
compiler/GHC/Types/Name/Reader.hs
</a>
</li>
<li class="file-stats">
<a href="#1f7ad7773f18165c1995cd496c307530800645b1">
testsuite/tests/indexed-types/should_fail/Overlap5.stderr
</a>
</li>
<li class="file-stats">
<a href="#b2bbbaa9afa7dee8f4b5ad5d88a54a403707596c">
<span class="new-file">
+
testsuite/tests/quantified-constraints/T18432.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#f1610e4f96b054482dbf49790fc6c1fa50e45ae2">
testsuite/tests/quantified-constraints/all.T
</a>
</li>
<li class="file-stats">
<a href="#2ae57b8c46961847488f3363ae6f023c39dd9f3a">
testsuite/tests/rename/should_fail/T16002.stderr
</a>
</li>
<li class="file-stats">
<a href="#06967bf4eda1dcb434bb05e9373aa8fa3a467f22">
testsuite/tests/th/T15362.hs
</a>
</li>
<li class="file-stats">
<a href="#fdc37038d819f2be8ce66bff83a7928c120c7455">
testsuite/tests/th/T15362.stderr
</a>
</li>
<li class="file-stats">
<a href="#f2f8be1d5db1924734332ee9da4296f24c549221">
testsuite/tests/typecheck/should_fail/ExplicitSpecificity4.hs
→
testsuite/tests/typecheck/should_compile/ExplicitSpecificity4.hs
</a>
</li>
<li class="file-stats">
<a href="#93febbc079ea3983ae2cd6b4e38bd0100fe8cb6a">
<span class="new-file">
+
testsuite/tests/typecheck/should_compile/T18470.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#623344f69e3f04970d640d4a311861403c18b94c">
<span class="new-file">
+
testsuite/tests/typecheck/should_compile/T18470.stderr
</span>
</a>
</li>
<li class="file-stats">
<a href="#34fe7bf0e6fbf60effb28393399ba68666593909">
testsuite/tests/typecheck/should_compile/all.T
</a>
</li>
<li class="file-stats">
<a href="#36df27be7e981d8004e9dc3a6fb728f175e5b374">
testsuite/tests/typecheck/should_fail/T11623.stderr
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<li class="file-stats">
<a href="#81c6ad9f91d49f90a4af407219e2c58b6b5b8ed0">
<span class="new-file">
+
testsuite/tests/typecheck/should_fail/T18455.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#6c88bbe3db19f92289b0114b3fd4fd587211bd2c">
<span class="new-file">
+
testsuite/tests/typecheck/should_fail/T18455.stderr
</span>
</a>
</li>
<li class="file-stats">
<a href="#b9e86d897a62509b0114d81d5e736630d6f68f43">
testsuite/tests/typecheck/should_fail/all.T
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="783e5dae6e86931f06700fc088fb7d48c8a07386">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#783e5dae6e86931f06700fc088fb7d48c8a07386"><strong>compiler/GHC/Core/Coercion.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1891" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1891" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1891,7 +1891,9 @@ substForAllCoBndrUsingLC sym sco (LC subst lc_env) tv co</td>
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<td class="diff-line-num old_line" data-linenumber="1891" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1891
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<td class="diff-line-num new_line" data-linenumber="1891" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1891
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1891" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1892" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1892
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<td class="diff-line-num new_line" data-linenumber="1892" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1892
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1892" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- For the inverse operation, see 'liftCoMatch'</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1893" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1893
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<td class="diff-line-num new_line" data-linenumber="1893" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1893
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC1893" class="line" lang="haskell"><span class="n" style="color: #333;">ty_co_subst</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LiftingContext</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Role</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span></span>
</pre>
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<tr class="line_holder old" id="" style="line-height: 1.6;">
<td class="diff-line-num old old_line" data-linenumber="1894" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1894
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<td class="diff-line-num new_line old" data-linenumber="1894" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1894" class="line" lang="haskell"><span class="n" style="color: #333;">ty_co_subst</span> <span class="n" style="color: #333;">lc</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">ty</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="1895" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1894" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1894
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<pre style="margin: 0;">+<span id="LC1894" class="line" lang="haskell"><span class="n" style="color: #333;">ty_co_subst</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">lc</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">ty</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="1895" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1895" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1895" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- !lc: making this function strict in lc allows callers to</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1895" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1896" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC1896" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- pass its two components separately, rather than boxing them</span></span>
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<td class="diff-line-num new_line" data-linenumber="1897" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC1897" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">ty</span></span>
</pre>
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1896
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<td class="diff-line-num new_line" data-linenumber="1898" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1898
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<pre style="margin: 0;"> <span id="LC1898" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC1899" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Role</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Type</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2864,9 +2866,9 @@ simplifyArgsWorker orig_ki_binders orig_inner_ki orig_fvs</td>
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<pre style="margin: 0;"> <span id="LC2866" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- need a coercion (kind_co :: old_kind ~ new_kind).</span></span>
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<pre style="margin: 0;"> <span id="LC2867" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC2868" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The bangs here have been observed to improve performance</span></span>
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<pre style="margin: 0;">-<span id="LC2867" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- significantly in optimized builds<span class="idiff left right">.</span></span></span>
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<pre style="margin: 0;">-<span id="LC2868" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">kind_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC2869" class="line" lang="haskell"> <span class="n" style="color: #333;">liftCoSubst</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">lc</span> <span class="p">(</span><span class="n" style="color: #333;">tyCoBinderType</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC2869" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- significantly in optimized builds<span class="idiff left right">; see #18502</span></span></span>
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<pre style="margin: 0;">+<span id="LC2870" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="o" style="font-weight: 600;"><span class="idiff left right">!</span></span><span class="n" style="color: #333;">kind_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkSymCo</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC2871" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="n" style="color: #333;">liftCoSubst</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">lc</span> <span class="p">(</span><span class="n" style="color: #333;">tyCoBinderType</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2872" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">casted_xi</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">xi</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">kind_co</span></span>
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<pre style="margin: 0;"> <span id="LC2873" class="line" lang="haskell"> <span class="n" style="color: #333;">casted_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkCoherenceLeftCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">kind_co</span> <span class="n" style="color: #333;">co</span></span>
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<pre style="margin: 0;"> <span id="LC2874" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -953,6 +953,12 @@ mkBuildModule ms = GWIB</td>
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<pre style="margin: 0;"> <span id="LC953" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">gwib_isBoot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isBootSummary</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;"> <span id="LC954" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC955" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC956" class="line" lang="haskell"><span class="n" style="color: #333;">mkHomeBuildModule</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ModSummary</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ModuleNameWithIsBoot</span></span>
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<pre style="margin: 0;">+<span id="LC957" class="line" lang="haskell"><span class="n" style="color: #333;">mkHomeBuildModule</span> <span class="n" style="color: #333;">ms</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GWIB</span></span>
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<pre style="margin: 0;">+<span id="LC958" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">gwib_mod</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">moduleName</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">ms_mod</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;">+<span id="LC959" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">gwib_isBoot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isBootSummary</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;">+<span id="LC960" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC961" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC962" class="line" lang="haskell"><span class="cd">-- | The entry point to the parallel upsweep.</span></span>
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<pre style="margin: 0;"> <span id="LC963" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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964
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<pre style="margin: 0;"> <span id="LC964" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See also the simpler, sequential 'upsweep'.</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1391,20 +1397,20 @@ upsweep mHscMessage old_hpt stable_mods cleanup sccs = do</td>
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1391
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1397
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<pre style="margin: 0;"> <span id="LC1397" class="line" lang="haskell"></span>
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1392
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1398
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<pre style="margin: 0;"> <span id="LC1398" class="line" lang="haskell"> <span class="n" style="color: #333;">keep_going</span> <span class="n" style="color: #333;">this_mods</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods</span> <span class="n" style="color: #333;">mod_index</span> <span class="n" style="color: #333;">nmods</span> <span class="n" style="color: #333;">uids_to_check</span> <span class="n" style="color: #333;">done_holes</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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1393
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1399
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<pre style="margin: 0;"> <span id="LC1399" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">sum_deps</span> <span class="n" style="color: #333;">ms</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AcyclicSCC</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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1394
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<pre style="margin: 0;">-<span id="LC1394" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">any</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="n" style="color: #333;">elem</span> <span class="o" style="font-weight: 600;"><span class="idiff left">.</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">map</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">unLoc</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">snd</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ms_imps</span></span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="n" style="color: #333;">ms</span></span>
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1395
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<pre style="margin: 0;">-<span id="LC1395" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">m<span class="idiff left right">s_mod_nam</span>e</span> <span class="n" style="color: #333;">mod</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">ms</span></span>
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1400
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<pre style="margin: 0;">+<span id="LC1400" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">any</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="n" style="color: #333;">elem</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">unfilteredEdges</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">False</span></span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="n" style="color: #333;">ms</span></span>
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<pre style="margin: 0;">+<span id="LC1401" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">m<span class="idiff left right">kHomeBuildModul</span>e</span> <span class="n" style="color: #333;">mod</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">ms</span></span>
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1396
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1402
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<pre style="margin: 0;"> <span id="LC1402" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">ms</span></span>
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1397
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1403
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<pre style="margin: 0;"> <span id="LC1403" class="line" lang="haskell"> <span class="n" style="color: #333;">sum_deps</span> <span class="n" style="color: #333;">ms</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ms</span></span>
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1398
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1404
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<pre style="margin: 0;"> <span id="LC1404" class="line" lang="haskell"> <span class="n" style="color: #333;">dep_closure</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">sum_deps</span> <span class="n" style="color: #333;">this_mods</span> <span class="n" style="color: #333;">mods</span></span>
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1399
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1405
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<pre style="margin: 0;"> <span id="LC1405" class="line" lang="haskell"> <span class="n" style="color: #333;">dropped_ms</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">drop</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">this_mods</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">dep_closure</span><span class="p">)</span></span>
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1400
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<pre style="margin: 0;">-<span id="LC1400" class="line" lang="haskell"> <span class="n" style="color: #333;">prunable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AcyclicSCC</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elem</span> <span class="p">(</span><span class="n" style="color: #333;">m<span class="idiff left right">s_mod_nam</span>e</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="n" style="color: #333;">dep_closure</span></span>
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1406
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<pre style="margin: 0;">+<span id="LC1406" class="line" lang="haskell"> <span class="n" style="color: #333;">prunable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">AcyclicSCC</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elem</span> <span class="p">(</span><span class="n" style="color: #333;">m<span class="idiff left right">kHomeBuildModul</span>e</span> <span class="n" style="color: #333;">mod</span><span class="p">)</span> <span class="n" style="color: #333;">dep_closure</span></span>
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1401
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1407
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<pre style="margin: 0;"> <span id="LC1407" class="line" lang="haskell"> <span class="n" style="color: #333;">prunable</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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1402
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1408
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<pre style="margin: 0;"> <span id="LC1408" class="line" lang="haskell"> <span class="n" style="color: #333;">mods'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="p">(</span><span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">prunable</span><span class="p">)</span> <span class="n" style="color: #333;">mods</span></span>
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1403
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<td class="diff-line-num new_line" data-linenumber="1409" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1409
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<pre style="margin: 0;"> <span id="LC1409" class="line" lang="haskell"> <span class="n" style="color: #333;">nmods'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nmods</span> <span class="o" style="font-weight: 600;">-</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">dropped_ms</span></span>
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<td class="diff-line-num old_line" data-linenumber="1404" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1404
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1410
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<pre style="margin: 0;"> <span id="LC1410" class="line" lang="haskell"></span>
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1405
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<td class="diff-line-num new_line" data-linenumber="1411" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1411
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<pre style="margin: 0;"> <span id="LC1411" class="line" lang="haskell"> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">dropped_ms</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num old_line" data-linenumber="1406" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1406
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<td class="diff-line-num new_line" data-linenumber="1412" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1412
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<pre style="margin: 0;"> <span id="LC1412" class="line" lang="haskell"> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getSessionDynFlags</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1407" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1407
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<td class="diff-line-num new_line old" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1407" class="line" lang="haskell"> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fatalErrorMsg</span> <span class="n" style="color: #333;">dflags</span> <span class="p">(</span><span class="n" style="color: #333;">keepGoingPruneErr</span> <span class="n" style="color: #333;">dropped_ms</span><span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1408" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1413" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1413
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<pre style="margin: 0;">+<span id="LC1413" class="line" lang="haskell"> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fatalErrorMsg</span> <span class="n" style="color: #333;">dflags</span> <span class="p">(</span><span class="n" style="color: #333;">keepGoingPruneErr</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">gwib_mod</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><$></span></span><span class="idiff right"> </span><span class="n" style="color: #333;">dropped_ms</span><span class="p">)</span></span>
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1408
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<td class="diff-line-num new_line" data-linenumber="1414" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1414
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<pre style="margin: 0;"> <span id="LC1414" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">done'</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">upsweep'</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods'</span> <span class="p">(</span><span class="n" style="color: #333;">mod_index</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">nmods'</span> <span class="n" style="color: #333;">uids_to_check</span> <span class="n" style="color: #333;">done_holes</span></span>
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1409
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<td class="diff-line-num new_line" data-linenumber="1415" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1415
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<pre style="margin: 0;"> <span id="LC1415" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Failed</span><span class="p">,</span> <span class="n" style="color: #333;">done'</span><span class="p">)</span></span>
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1410
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<td class="diff-line-num new_line" data-linenumber="1416" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1416
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<pre style="margin: 0;"> <span id="LC1416" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1429" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1435" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1429,7 +1435,7 @@ upsweep mHscMessage old_hpt stable_mods cleanup sccs = do</td>
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1429
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<td class="diff-line-num new_line" data-linenumber="1435" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1435
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<pre style="margin: 0;"> <span id="LC1435" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getSessionDynFlags</span></span>
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<td class="diff-line-num old_line" data-linenumber="1430" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1430
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<td class="diff-line-num new_line" data-linenumber="1436" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1436
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<pre style="margin: 0;"> <span id="LC1436" class="line" lang="haskell"> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">fatalErrorMsg</span> <span class="n" style="color: #333;">dflags</span> <span class="p">(</span><span class="n" style="color: #333;">cyclicModuleErr</span> <span class="n" style="color: #333;">ms</span><span class="p">)</span></span>
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<td class="diff-line-num old_line" data-linenumber="1431" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1431
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<td class="diff-line-num new_line" data-linenumber="1437" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1437
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<pre style="margin: 0;"> <span id="LC1437" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">gopt</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_KeepGoing</span> <span class="n" style="color: #333;">dflags</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1432" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1432
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<td class="diff-line-num new_line old" data-linenumber="1438" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1432" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">keep_going</span> <span class="p">(</span><span class="n" style="color: #333;">m<span class="idiff left">ap</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ms_mod_name</span></span> <span class="n" style="color: #333;">ms</span><span class="p">)</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods</span> <span class="n" style="color: #333;">mod_index</span> <span class="n" style="color: #333;">nmods</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1433" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1438" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1438
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<pre style="margin: 0;">+<span id="LC1438" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">keep_going</span> <span class="p">(</span><span class="n" style="color: #333;">m<span class="idiff left">kHomeBuildModule</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right"><$></span></span> <span class="n" style="color: #333;">ms</span><span class="p">)</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods</span> <span class="n" style="color: #333;">mod_index</span> <span class="n" style="color: #333;">nmods</span></span>
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1433
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<td class="diff-line-num new_line" data-linenumber="1439" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1439
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<pre style="margin: 0;"> <span id="LC1439" class="line" lang="haskell"> <span class="n" style="color: #333;">uids_to_check</span> <span class="n" style="color: #333;">done_holes</span></span>
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1434
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1440
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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Failed</span><span class="p">,</span> <span class="n" style="color: #333;">done</span><span class="p">)</span></span>
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1435
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1441
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<pre style="margin: 0;"> <span id="LC1441" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1483" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1489" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1483,7 +1489,7 @@ upsweep mHscMessage old_hpt stable_mods cleanup sccs = do</td>
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1483
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1489
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<pre style="margin: 0;"> <span id="LC1489" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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1484
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1490
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<pre style="margin: 0;"> <span id="LC1490" class="line" lang="haskell"> <span class="n" style="color: #333;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getSessionDynFlags</span></span>
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1485
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1491
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<pre style="margin: 0;"> <span id="LC1491" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">gopt</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_KeepGoing</span> <span class="n" style="color: #333;">dflags</span></span>
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1486
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<td class="diff-line-num new_line old" data-linenumber="1492" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1486" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">keep_going</span> <span class="p">[</span><span class="n" style="color: #333;">m<span class="idiff left right">s_mod_nam</span>e</span> <span class="n" style="color: #333;">mod</span><span class="p">]</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods</span> <span class="n" style="color: #333;">mod_index</span> <span class="n" style="color: #333;">nmods</span></span>
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1492
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<pre style="margin: 0;">+<span id="LC1492" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">keep_going</span> <span class="p">[</span><span class="n" style="color: #333;">m<span class="idiff left right">kHomeBuildModul</span>e</span> <span class="n" style="color: #333;">mod</span><span class="p">]</span> <span class="n" style="color: #333;">old_hpt</span> <span class="n" style="color: #333;">done</span> <span class="n" style="color: #333;">mods</span> <span class="n" style="color: #333;">mod_index</span> <span class="n" style="color: #333;">nmods</span></span>
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1487
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1493
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<pre style="margin: 0;"> <span id="LC1493" class="line" lang="haskell"> <span class="n" style="color: #333;">uids_to_check</span> <span class="n" style="color: #333;">done_holes</span></span>
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1488
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1494
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<pre style="margin: 0;"> <span id="LC1494" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Failed</span><span class="p">,</span> <span class="n" style="color: #333;">done</span><span class="p">)</span></span>
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1489
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1495
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<pre style="margin: 0;"> <span id="LC1495" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">mod_info</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1919" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1925" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1919,7 +1925,7 @@ reachableBackwards mod summaries</td>
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1919
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1925
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<pre style="margin: 0;"> <span id="LC1925" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span> <span class="n" style="color: #333;">node_payload</span> <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">reachableG</span> <span class="p">(</span><span class="n" style="color: #333;">transposeG</span> <span class="n" style="color: #333;">graph</span><span class="p">)</span> <span class="n" style="color: #333;">root</span> <span class="p">]</span></span>
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1920
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1926
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<pre style="margin: 0;"> <span id="LC1926" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="c1" style="color: #998; font-style: italic;">-- the rest just sets up the graph:</span></span>
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1921
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1927
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<pre style="margin: 0;"> <span id="LC1927" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">graph</span><span class="p">,</span> <span class="n" style="color: #333;">lookup_node</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">moduleGraphNodes</span> <span class="kt" style="color: #458; font-weight: 600;">False</span> <span class="n" style="color: #333;">summaries</span></span>
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1922
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<pre style="margin: 0;">-<span id="LC1922" class="line" lang="haskell"> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">expectJust</span> <span class="s" style="color: #d14;">"reachableBackwards"</span> <span class="p">(</span><span class="n" style="color: #333;">lookup_node</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">IsBoot</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">mod</span></span><span class="p">)</span></span>
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1928
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<pre style="margin: 0;">+<span id="LC1928" class="line" lang="haskell"> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">expectJust</span> <span class="s" style="color: #d14;">"reachableBackwards"</span> <span class="p">(</span><span class="n" style="color: #333;">lookup_node</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">GWIB</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mod</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">IsBoot</span></span><span class="p">)</span></span>
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1923
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1929
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<pre style="margin: 0;"> <span id="LC1929" class="line" lang="haskell"></span>
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1924
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1930
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<pre style="margin: 0;"> <span id="LC1930" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ---------------------------------------------------------------------------</span></span>
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1925
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1931
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<pre style="margin: 0;"> <span id="LC1931" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1962" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1968" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1962,7 +1968,7 @@ topSortModuleGraph drop_hs_boot_nodes module_graph mb_root_mod</td>
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1962
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1968
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<pre style="margin: 0;"> <span id="LC1968" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the specified module. We do this by building a graph with</span></span>
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1963
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1969
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<pre style="margin: 0;"> <span id="LC1969" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the full set of nodes, and determining the reachable set from</span></span>
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1964
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1970
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<pre style="margin: 0;"> <span id="LC1970" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the specified node.</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1965" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1965
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<pre style="margin: 0;">-<span id="LC1965" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookup_node</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NotBoot</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">root_mod</span></span></span>
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<td class="diff-line-num new old_line" data-linenumber="1966" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1971
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<pre style="margin: 0;">+<span id="LC1971" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">root</span> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookup_node</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">GWIB</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">root_mod</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">NotBoot</span></span></span>
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1966
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<td class="diff-line-num new_line" data-linenumber="1972" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1972
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<pre style="margin: 0;"> <span id="LC1972" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">graph</span> <span class="p">`</span><span class="n" style="color: #333;">hasVertexG</span><span class="p">`</span> <span class="n" style="color: #333;">node</span></span>
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1967
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1973
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<pre style="margin: 0;"> <span id="LC1973" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">node</span></span>
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<td class="diff-line-num old_line" data-linenumber="1968" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1968
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<td class="diff-line-num new_line" data-linenumber="1974" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1974
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<pre style="margin: 0;"> <span id="LC1974" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1977" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1977,60 +1983,55 @@ summaryNodeKey = node_key</td>
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1977
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<td class="diff-line-num new_line" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1983
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<pre style="margin: 0;"> <span id="LC1983" class="line" lang="haskell"><span class="n" style="color: #333;">summaryNodeSummary</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ModSummary</span></span>
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<td class="diff-line-num old_line" data-linenumber="1978" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1978
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<td class="diff-line-num new_line" data-linenumber="1984" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1984
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<pre style="margin: 0;"> <span id="LC1984" class="line" lang="haskell"><span class="n" style="color: #333;">summaryNodeSummary</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">node_payload</span></span>
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<td class="diff-line-num old_line" data-linenumber="1979" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1979
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<td class="diff-line-num new_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1985
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<pre style="margin: 0;"> <span id="LC1985" class="line" lang="haskell"></span>
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<td class="diff-line-num new old_line" data-linenumber="1980" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1986" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1986
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<pre style="margin: 0;">+<span id="LC1986" class="line" lang="haskell"><span class="cd">-- | Collect the immediate dependencies of a module from its ModSummary,</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1987" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1987
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<pre style="margin: 0;">+<span id="LC1987" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- optionally avoiding hs-boot dependencies.</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1988" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1988
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<pre style="margin: 0;">+<span id="LC1988" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If the drop_hs_boot_nodes flag is False, and if this is a .hs and there is</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1989" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1989
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<pre style="margin: 0;">+<span id="LC1989" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- an equivalent .hs-boot, add a link from the former to the latter. This</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1990" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1990
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<pre style="margin: 0;">+<span id="LC1990" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- has the effect of detecting bogus cases where the .hs-boot depends on the</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1991" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1991
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<pre style="margin: 0;">+<span id="LC1991" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- .hs, by introducing a cycle. Additionally, it ensures that we will always</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1992" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1992
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<pre style="margin: 0;">+<span id="LC1992" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- process the .hs-boot before the .hs, and so the HomePackageTable will always</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1993" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1993
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<pre style="margin: 0;">+<span id="LC1993" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- have the most up to date information.</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1994" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1994
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<pre style="margin: 0;">+<span id="LC1994" class="line" lang="haskell"><span class="n" style="color: #333;">unfilteredEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ModSummary</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">ModuleNameWithIsBoot</span><span class="p">]</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1995" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1995
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<pre style="margin: 0;">+<span id="LC1995" class="line" lang="haskell"><span class="n" style="color: #333;">unfilteredEdges</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="n" style="color: #333;">ms</span> <span class="o" style="font-weight: 600;">=</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1996" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1996
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<pre style="margin: 0;">+<span id="LC1996" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">GWIB</span> <span class="n" style="color: #333;">hs_boot_key</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">ms_home_srcimps</span> <span class="n" style="color: #333;">ms</span><span class="p">)</span> <span class="o" style="font-weight: 600;">++</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1997" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1997
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<pre style="margin: 0;">+<span id="LC1997" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="kt" style="color: #458; font-weight: 600;">GWIB</span> <span class="kt" style="color: #458; font-weight: 600;">NotBoot</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unLoc</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">ms_home_imps</span> <span class="n" style="color: #333;">ms</span><span class="p">)</span> <span class="o" style="font-weight: 600;">++</span></span>
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1998
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<pre style="margin: 0;">+<span id="LC1998" class="line" lang="haskell"> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">GWIB</span> <span class="p">(</span><span class="n" style="color: #333;">ms_mod_name</span> <span class="n" style="color: #333;">ms</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">IsBoot</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1980" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="1999" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1999
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<pre style="margin: 0;">+<span id="LC1999" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">ms_hsc_src</span> <span class="n" style="color: #333;">ms</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">HsBootFile</span></span>
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2000
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<pre style="margin: 0;">+<span id="LC2000" class="line" lang="haskell"> <span class="p">]</span></span>
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2001
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<pre style="margin: 0;">+<span id="LC2001" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1980" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="2002" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2002
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<pre style="margin: 0;">+<span id="LC2002" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Drop hs-boot nodes by using HsSrcFile as the key</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2003" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2003
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<pre style="margin: 0;">+<span id="LC2003" class="line" lang="haskell"> <span class="n" style="color: #333;">hs_boot_key</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NotBoot</span> <span class="c1" style="color: #998; font-style: italic;">-- is regular mod or signature</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2004" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2004
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<pre style="margin: 0;">+<span id="LC2004" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IsBoot</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2005" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2005
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<pre style="margin: 0;">+<span id="LC2005" class="line" lang="haskell"></span>
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<td class="diff-line-num old_line" data-linenumber="1980" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1980
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<td class="diff-line-num new_line" data-linenumber="2006" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2006
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<pre style="margin: 0;"> <span id="LC2006" class="line" lang="haskell"><span class="n" style="color: #333;">moduleGraphNodes</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">ModSummary</span><span class="p">]</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1981" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1981
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<td class="diff-line-num new_line old" data-linenumber="2007" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1981" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">IsBootInterface</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">ModuleName</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span><span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1982" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="2007" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2007
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<pre style="margin: 0;">+<span id="LC2007" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Graph</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">ModuleNameWithIsBoot</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1982" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1982
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<td class="diff-line-num new_line" data-linenumber="2008" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2008
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<pre style="margin: 0;"> <span id="LC2008" class="line" lang="haskell"><span class="n" style="color: #333;">moduleGraphNodes</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="n" style="color: #333;">summaries</span> <span class="o" style="font-weight: 600;">=</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1983" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1983
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<td class="diff-line-num new_line" data-linenumber="2009" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2009
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<pre style="margin: 0;"> <span id="LC2009" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">graphFromEdgedVerticesUniq</span> <span class="n" style="color: #333;">nodes</span><span class="p">,</span> <span class="n" style="color: #333;">lookup_node</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1984" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1984
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<td class="diff-line-num new_line" data-linenumber="2010" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2010
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<pre style="margin: 0;"> <span id="LC2010" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num old_line" data-linenumber="1985" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1985
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<td class="diff-line-num new_line" data-linenumber="2011" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2011
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<pre style="margin: 0;"> <span id="LC2011" class="line" lang="haskell"> <span class="n" style="color: #333;">numbered_summaries</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zip</span> <span class="n" style="color: #333;">summaries</span> <span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">..</span><span class="p">]</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="1986" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1986
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<td class="diff-line-num new_line" data-linenumber="2012" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2012
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<pre style="margin: 0;"> <span id="LC2012" class="line" lang="haskell"></span>
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<td class="diff-line-num old old_line" data-linenumber="1987" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1987
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<td class="diff-line-num new_line old" data-linenumber="2013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1987" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_node</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IsBootInterface</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ModuleName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="1988" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1988
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<td class="diff-line-num new_line old" data-linenumber="2013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1988" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_node</span> <span class="n" style="color: #333;">hs_src</span> <span class="n" style="color: #333;">mod</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Map</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="1989" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1989
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<td class="diff-line-num new_line old" data-linenumber="2013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
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<pre style="margin: 0;">-<span id="LC1989" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GWIB</span> <span class="p">{</span> <span class="n" style="color: #333;">gwib_mod</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mod</span><span class="p">,</span> <span class="n" style="color: #333;">gwib_isBoot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_src</span> <span class="p">})</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="1990" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1990
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<td class="diff-line-num new_line old" data-linenumber="2013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
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<pre style="margin: 0;">-<span id="LC1990" class="line" lang="haskell"> <span class="n" style="color: #333;">node_map</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1991" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
</td>
<td class="diff-line-num new new_line" data-linenumber="2013" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2013
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<pre style="margin: 0;">+<span id="LC2013" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_node</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ModuleNameWithIsBoot</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span></span>
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2014
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<pre style="margin: 0;">+<span id="LC2014" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_node</span> <span class="n" style="color: #333;">mnwib</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Map</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">mnwib</span> <span class="n" style="color: #333;">node_map</span></span>
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1991
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2015
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<pre style="margin: 0;"> <span id="LC2015" class="line" lang="haskell"></span>
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<td class="diff-line-num old old_line" data-linenumber="1992" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1992
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<pre style="margin: 0;">-<span id="LC1992" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_key</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">IsBootInterface</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">ModuleName</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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1993
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<pre style="margin: 0;">-<span id="LC1993" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_key</span> <span class="n" style="color: #333;"><span class="idiff left">hs_src</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mod</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fmap</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">summaryNodeKey</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">lookup_node</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">hs_src</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mod</span></span><span class="p"><span class="idiff right">)</span></span></span>
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2016
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<pre style="margin: 0;">+<span id="LC2016" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_key</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">ModuleNameWithIsBoot</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1994" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="2017" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2017
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<pre style="margin: 0;">+<span id="LC2017" class="line" lang="haskell"> <span class="n" style="color: #333;">lookup_key</span> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fmap</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">summaryNodeKey</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">lookup_node</span></span></span>
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<td class="diff-line-num old_line" data-linenumber="1994" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1994
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2018
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<pre style="margin: 0;"> <span id="LC2018" class="line" lang="haskell"></span>
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<td class="diff-line-num old_line" data-linenumber="1995" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1995
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2019
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<pre style="margin: 0;"> <span id="LC2019" class="line" lang="haskell"> <span class="n" style="color: #333;">node_map</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">NodeMap</span> <span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1996" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1996
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<pre style="margin: 0;">-<span id="LC1996" class="line" lang="haskell"> <span class="n" style="color: #333;">node_map</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Map</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span> <span class="p">[</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">GWIB</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1997" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1997
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<pre style="margin: 0;">-<span id="LC1997" class="line" lang="haskell"> <span class="p">{</span> <span class="n" style="color: #333;">gwib_mod</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">moduleName</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">ms_mod</span> <span class="n" style="color: #333;">s</span></span>
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<td class="diff-line-num old old_line" data-linenumber="1998" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
1998
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<pre style="margin: 0;">-<span id="LC1998" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">gwib_isBoot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hscSourceToIsBoot</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">ms_hsc_src</span> <span class="n" style="color: #333;">s</span></span>
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1999
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<pre style="margin: 0;">-<span id="LC1999" class="line" lang="haskell"> <span class="p">}</span></span>
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2000
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<pre style="margin: 0;">-<span id="LC2000" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">node</span></span>
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2001
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<pre style="margin: 0;">-<span id="LC2001" class="line" lang="haskell"> <span class="p">)</span></span>
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2020
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<pre style="margin: 0;">+<span id="LC2020" class="line" lang="haskell"> <span class="n" style="color: #333;">node_map</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Map</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">fromList</span> <span class="p">[</span> <span class="p">(</span><span class="n" style="color: #333;">mkHomeBuildModule</span> <span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">node</span><span class="p">)</span></span>
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2002
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2021
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<pre style="margin: 0;"> <span id="LC2021" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">nodes</span></span>
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2003
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<pre style="margin: 0;">-<span id="LC2003" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">summaryNodeSummary</span> <span class="n" style="color: #333;">node</span> <span class="p">]</span></span>
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2022
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<pre style="margin: 0;">+<span id="LC2022" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">summaryNodeSummary</span> <span class="n" style="color: #333;">node</span></span>
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2023
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<pre style="margin: 0;">+<span id="LC2023" class="line" lang="haskell"> <span class="p">]</span></span>
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2004
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2024
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<pre style="margin: 0;"> <span id="LC2024" class="line" lang="haskell"></span>
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2005
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2025
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<pre style="margin: 0;"> <span id="LC2025" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We use integers as the keys for the SCC algorithm</span></span>
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2006
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2026
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<pre style="margin: 0;"> <span id="LC2026" class="line" lang="haskell"> <span class="n" style="color: #333;">nodes</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SummaryNode</span><span class="p">]</span></span>
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2007
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<pre style="margin: 0;">-<span id="LC2007" class="line" lang="haskell"> <span class="n" style="color: #333;">nodes</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">DigraphNode</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;"><span class="idiff left right">out_key</span>s</span></span>
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2027
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<pre style="margin: 0;">+<span id="LC2027" class="line" lang="haskell"> <span class="n" style="color: #333;">nodes</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span> <span class="kt" style="color: #458; font-weight: 600;">DigraphNode</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;"><span class="idiff left">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">out_edge_keys</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">unfilteredEdges</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">drop_hs_boot_nodes</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">s</span></span>
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2008
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2028
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<pre style="margin: 0;"> <span id="LC2028" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">key</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">numbered_summaries</span></span>
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2009
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2029
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<pre style="margin: 0;"> <span id="LC2029" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Drop the hi-boot ones if told to do so</span></span>
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2010
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2030
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<pre style="margin: 0;"> <span id="LC2030" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isBootSummary</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">IsBoot</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span><span class="p">)</span></span>
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2011
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<pre style="margin: 0;">-<span id="LC2011" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">out_keys</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">out_edge_keys</span> <span class="n" style="color: #333;">hs_boot_key</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">unLoc</span> <span class="p">(</span><span class="n" style="color: #333;">ms_home_srcimps</span> <span class="n" style="color: #333;">s</span><span class="p">))</span> <span class="o" style="font-weight: 600;">++</span></span>
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2012
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<pre style="margin: 0;">-<span id="LC2012" class="line" lang="haskell"> <span class="n" style="color: #333;">out_edge_keys</span> <span class="kt" style="color: #458; font-weight: 600;">NotBoot</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">unLoc</span> <span class="p">(</span><span class="n" style="color: #333;">ms_home_imps</span> <span class="n" style="color: #333;">s</span><span class="p">))</span> <span class="o" style="font-weight: 600;">++</span></span>
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2013
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<pre style="margin: 0;">-<span id="LC2013" class="line" lang="haskell"> <span class="p">(</span><span class="c1" style="color: #998; font-style: italic;">-- see [boot-edges] below</span></span>
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2014
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<pre style="margin: 0;">-<span id="LC2014" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">ms_hsc_src</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">HsBootFile</span></span>
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2015
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<pre style="margin: 0;">-<span id="LC2015" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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2016
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<pre style="margin: 0;">-<span id="LC2016" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookup_key</span> <span class="kt" style="color: #458; font-weight: 600;">IsBoot</span> <span class="p">(</span><span class="n" style="color: #333;">ms_mod_name</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>
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2017
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<pre style="margin: 0;">-<span id="LC2017" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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2018
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<pre style="margin: 0;">-<span id="LC2018" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">k</span><span class="p">])</span> <span class="p">]</span></span>
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2019
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<pre style="margin: 0;">-<span id="LC2019" class="line" lang="haskell"></span>
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2020
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<pre style="margin: 0;">-<span id="LC2020" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- [boot-edges] if this is a .hs and there is an equivalent</span></span>
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2021
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<pre style="margin: 0;">-<span id="LC2021" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- .hs-boot, add a link from the former to the latter. This</span></span>
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2022
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<pre style="margin: 0;">-<span id="LC2022" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- has the effect of detecting bogus cases where the .hs-boot</span></span>
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2023
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<pre style="margin: 0;">-<span id="LC2023" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- depends on the .hs, by introducing a cycle. Additionally,</span></span>
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2024
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<pre style="margin: 0;">-<span id="LC2024" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- it ensures that we will always process the .hs-boot before</span></span>
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<pre style="margin: 0;">-<span id="LC2025" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the .hs, and so the HomePackageTable will always have the</span></span>
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<pre style="margin: 0;">-<span id="LC2026" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- most up to date information.</span></span>
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2027
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<pre style="margin: 0;">-<span id="LC2027" class="line" lang="haskell"></span>
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2028
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<pre style="margin: 0;">-<span id="LC2028" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Drop hs-boot nodes by using HsSrcFile as the key</span></span>
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2029
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<pre style="margin: 0;">-<span id="LC2029" class="line" lang="haskell"> <span class="n" style="color: #333;">hs_boot_key</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">drop_hs_boot_nodes</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NotBoot</span> <span class="c1" style="color: #998; font-style: italic;">-- is regular mod or signature</span></span>
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2030
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<pre style="margin: 0;">-<span id="LC2030" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IsBoot</span></span>
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<pre style="margin: 0;">+<span id="LC2031" class="line" lang="haskell"> <span class="p">]</span></span>
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2032
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<pre style="margin: 0;"> <span id="LC2032" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC2032" class="line" lang="haskell"> <span class="n" style="color: #333;">out_edge_keys</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">IsBootInterface</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="p"><span class="idiff">[</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">ModuleName</span></span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">]</span></span>
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2033
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<pre style="margin: 0;">-<span id="LC2033" class="line" lang="haskell"> <span class="n" style="color: #333;">out_edge_keys</span> <span class="n" style="color: #333;"><span class="idiff left">hi_boot</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ms</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mapMaybe</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">lookup_key</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">hi_boot</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ms</span></span></span>
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<pre style="margin: 0;">+<span id="LC2033" class="line" lang="haskell"> <span class="n" style="color: #333;">out_edge_keys</span> <span class="o" style="font-weight: 600;">::</span> <span class="p"><span class="idiff left">[</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">ModuleNameWithIsBoot</span></span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC2034" class="line" lang="haskell"> <span class="n" style="color: #333;">out_edge_keys</span> <span class="o" style="font-weight: 600;"><span class="idiff left">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mapMaybe</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">lookup_key</span></span></span>
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<pre style="margin: 0;"> <span id="LC2035" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- If we want keep_hi_boot_nodes, then we do lookup_key with</span></span>
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<pre style="margin: 0;"> <span id="LC2036" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- IsBoot; else False</span></span>
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<pre style="margin: 0;"> <span id="LC2037" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#018be522bc4813b147a1525e4f96a7a493207d96"><strong>compiler/GHC/Hs/Type.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1628,6 +1628,12 @@ instance types, which makes things like the instance above become illegal.</td>
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<pre style="margin: 0;"> <span id="LC1628" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">For the sake of consistency, we also disallow nested contexts, even though they</span></span>
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<pre style="margin: 0;"> <span id="LC1629" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">don't have the same strange interaction with ScopedTypeVariables.</span></span>
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<pre style="margin: 0;"> <span id="LC1630" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1631" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Just as we forbid nested `forall`s and contexts in normal instance</span></span>
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<pre style="margin: 0;">+<span id="LC1632" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">declarations, we also forbid them in SPECIALISE instance pragmas (#18455).</span></span>
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<pre style="margin: 0;">+<span id="LC1633" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Unlike normal instance declarations, ScopedTypeVariables don't have any impact</span></span>
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<pre style="margin: 0;">+<span id="LC1634" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">on SPECIALISE instance pragmas, but we use the same validity checks for</span></span>
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<pre style="margin: 0;">+<span id="LC1635" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">SPECIALISE instance pragmas anyway to be consistent.</span></span>
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<pre style="margin: 0;">+<span id="LC1636" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1637" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-----</span></span>
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<pre style="margin: 0;"> <span id="LC1638" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-- Wrinkle: Derived instances</span></span>
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<pre style="margin: 0;"> <span id="LC1639" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-----</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#af762064d779f7308dd415966c974f27d14f9943"><strong>compiler/GHC/Rename/Bind.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -43,7 +43,8 @@ import GHC.Rename.Fixity</td>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Utils</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">mapFvRn</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyVarEnvFVRn</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkDupRdrNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">warnUnusedLocalBinds</span></span>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkUnusedRecordWildcard</span></span>
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<pre style="margin: 0;">-<span id="LC46" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkDupAndShadowedNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindLocalNamesFV</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkDupAndShadowedNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindLocalNamesFV</span></span>
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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addNoNestedForallsContextsErr</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkInferredVars</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Unit.Module</span></span>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -955,7 +956,7 @@ renameSig _ (IdSig _ x)</td>
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<pre style="margin: 0;"> <span id="LC956" class="line" lang="haskell"><span class="n" style="color: #333;">renameSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TypeSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">vs</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC957" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_vs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="p">(</span><span class="n" style="color: #333;">lookupSigOccRn</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="p">)</span> <span class="n" style="color: #333;">vs</span></span>
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<pre style="margin: 0;"> <span id="LC958" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TypeSigCtx</span> <span class="p">(</span><span class="n" style="color: #333;">ppr_sig_bndrs</span> <span class="n" style="color: #333;">vs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC958" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigWcType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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959
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<pre style="margin: 0;">+<span id="LC959" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigWcType</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">ty</span></span>
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959
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960
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<pre style="margin: 0;"> <span id="LC960" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TypeSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">new_vs</span> <span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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960
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961
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<pre style="margin: 0;"> <span id="LC961" class="line" lang="haskell"></span>
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961
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962
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<pre style="margin: 0;"> <span id="LC962" class="line" lang="haskell"><span class="n" style="color: #333;">renameSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClassOpSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">is_deflt</span> <span class="n" style="color: #333;">vs</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -963,20 +964,25 @@ renameSig ctxt sig@(ClassOpSig _ is_deflt vs ty)</td>
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963
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964
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<pre style="margin: 0;"> <span id="LC964" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">is_deflt</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">defaultSigs_on</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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964
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965
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<pre style="margin: 0;"> <span id="LC965" class="line" lang="haskell"> <span class="n" style="color: #333;">addErr</span> <span class="p">(</span><span class="n" style="color: #333;">defaultSigErr</span> <span class="n" style="color: #333;">sig</span><span class="p">)</span></span>
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965
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966
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<pre style="margin: 0;"> <span id="LC966" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">new_v</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="p">(</span><span class="n" style="color: #333;">lookupSigOccRn</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="p">)</span> <span class="n" style="color: #333;">vs</span></span>
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966
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<pre style="margin: 0;">-<span id="LC966" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;"><span class="idiff left">inf_msg</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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967
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<pre style="margin: 0;">+<span id="LC967" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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967
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968
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<pre style="margin: 0;"> <span id="LC968" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClassOpSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">is_deflt</span> <span class="n" style="color: #333;">new_v</span> <span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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968
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969
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<pre style="margin: 0;"> <span id="LC969" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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969
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970
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<pre style="margin: 0;"> <span id="LC970" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">v1</span><span class="o" style="font-weight: 600;">:</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">vs</span></span>
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970
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971
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<pre style="margin: 0;"> <span id="LC971" class="line" lang="haskell"> <span class="n" style="color: #333;">ty_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GenericCtx</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"a class method signature for"</span></span>
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971
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972
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<pre style="margin: 0;"> <span id="LC972" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">v1</span><span class="p">))</span></span>
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972
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<pre style="margin: 0;">-<span id="LC972" class="line" lang="haskell"> <span class="n" style="color: #333;">inf_msg</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">is_deflt</span></span>
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973
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<pre style="margin: 0;">-<span id="LC973" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">then</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"A default type signature cannot contain inferred type variables"</span><span class="p">)</span></span>
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974
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<pre style="margin: 0;">-<span id="LC974" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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975
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973
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<pre style="margin: 0;"> <span id="LC973" class="line" lang="haskell"></span>
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976
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974
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<pre style="margin: 0;"> <span id="LC974" class="line" lang="haskell"><span class="n" style="color: #333;">renameSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SpecInstSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC977" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">SpecInstSigCtx</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">inf_msg</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC975" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">checkInferredVars</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">inf_msg</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC976" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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977
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<pre style="margin: 0;">+<span id="LC977" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check if there are any nested `forall`s or contexts, which are</span></span>
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978
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<pre style="margin: 0;">+<span id="LC978" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- illegal in the type of an instance declaration (see</span></span>
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979
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<pre style="margin: 0;">+<span id="LC979" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [No nested foralls or contexts in instance types] in</span></span>
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980
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<pre style="margin: 0;">+<span id="LC980" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- GHC.Hs.Type).</span></span>
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<pre style="margin: 0;">+<span id="LC981" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">doc</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"SPECIALISE instance type"</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC982" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">getLHsInstDeclHead</span> <span class="n" style="color: #333;">new_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC983" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SpecInstSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">new_ty</span><span class="p">,</span><span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC984" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC985" class="line" lang="haskell"> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SpecInstSigCtx</span></span>
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986
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<pre style="margin: 0;"> <span id="LC986" class="line" lang="haskell"> <span class="n" style="color: #333;">inf_msg</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Inferred type variables are not allowed"</span><span class="p">)</span></span>
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987
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<pre style="margin: 0;"> <span id="LC987" class="line" lang="haskell"></span>
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988
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<pre style="margin: 0;"> <span id="LC988" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- {-# SPECIALISE #-} pragmas can refer to imported Ids</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -993,7 +999,7 @@ renameSig ctxt sig@(SpecSig _ v tys inl)</td>
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<pre style="margin: 0;"> <span id="LC999" class="line" lang="haskell"> <span class="n" style="color: #333;">ty_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GenericCtx</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"a SPECIALISE signature for"</span></span>
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1000
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<pre style="margin: 0;"> <span id="LC1000" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">v</span><span class="p">))</span></span>
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1001
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<pre style="margin: 0;"> <span id="LC1001" class="line" lang="haskell"> <span class="n" style="color: #333;">do_one</span> <span class="p">(</span><span class="n" style="color: #333;">tys</span><span class="p">,</span><span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">-<span id="LC996" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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1002
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<pre style="margin: 0;">+<span id="LC1002" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">new_ty</span><span class="p">,</span> <span class="n" style="color: #333;">fvs_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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997
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1003
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<pre style="margin: 0;"> <span id="LC1003" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">new_ty</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">fvs_ty</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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998
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1004
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<pre style="margin: 0;"> <span id="LC1004" class="line" lang="haskell"></span>
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1005
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<pre style="margin: 0;"> <span id="LC1005" class="line" lang="haskell"><span class="n" style="color: #333;">renameSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">InlineSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1016" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1010,7 +1016,7 @@ renameSig ctxt sig@(MinimalSig _ s (L l bf))</td>
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1010
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1016
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<pre style="margin: 0;"> <span id="LC1016" class="line" lang="haskell"></span>
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1011
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1017
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<pre style="margin: 0;"> <span id="LC1017" class="line" lang="haskell"><span class="n" style="color: #333;">renameSig</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatSynSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">vs</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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1012
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1018
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<pre style="margin: 0;"> <span id="LC1018" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">new_vs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="p">(</span><span class="n" style="color: #333;">lookupSigOccRn</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig</span><span class="p">)</span> <span class="n" style="color: #333;">vs</span></span>
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1013
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<pre style="margin: 0;">-<span id="LC1013" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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1019
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<pre style="margin: 0;">+<span id="LC1019" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ty_ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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1014
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1020
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<pre style="margin: 0;"> <span id="LC1020" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PatSynSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">new_vs</span> <span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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1015
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1021
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<pre style="margin: 0;"> <span id="LC1021" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1016
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1022
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<pre style="margin: 0;"> <span id="LC1022" class="line" lang="haskell"> <span class="n" style="color: #333;">ty_ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GenericCtx</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"a pattern synonym signature for"</span></span>
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<li id="b47ece2bbb8303a5792c2fdc52394c8ed336e8a2">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#b47ece2bbb8303a5792c2fdc52394c8ed336e8a2"><strong>compiler/GHC/Rename/Expr.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="317" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="317" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -317,7 +317,7 @@ rnExpr (RecordUpd { rupd_expr = expr, rupd_flds = rbinds })</td>
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317
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317
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<pre style="margin: 0;"> <span id="LC317" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fvExpr</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">fvRbinds</span><span class="p">)</span> <span class="p">}</span></span>
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318
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318
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<pre style="margin: 0;"> <span id="LC318" class="line" lang="haskell"></span>
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319
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319
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<pre style="margin: 0;"> <span id="LC319" class="line" lang="haskell"><span class="n" style="color: #333;">rnExpr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExprWithTySig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">expr</span> <span class="n" style="color: #333;">pty</span><span class="p">)</span></span>
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320
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<pre style="margin: 0;">-<span id="LC320" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">pty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvTy</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">ExprWithTySigCtx</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">pty</span></span>
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320
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<pre style="margin: 0;">+<span id="LC320" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">pty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvTy</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">ExprWithTySigCtx</span> <span class="n" style="color: #333;">pty</span></span>
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">expr'</span><span class="p">,</span> <span class="n" style="color: #333;">fvExpr</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindSigTyVarsFV</span> <span class="p">(</span><span class="n" style="color: #333;">hsWcScopedTvs</span> <span class="n" style="color: #333;">pty'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"> <span class="n" style="color: #333;">rnLExpr</span> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ExprWithTySig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">expr'</span> <span class="n" style="color: #333;">pty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvExpr</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">fvTy</span><span class="p">)</span> <span class="p">}</span></span>
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<li id="892acbb198a9095c917740d3c1297b56df4e3b7e">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#892acbb198a9095c917740d3c1297b56df4e3b7e"><strong>compiler/GHC/Rename/HsType.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -39,7 +39,6 @@ import GHC.Prelude</td>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="err" style="color: #a61717; background-color: #e3d2d2;">{-#</span> <span class="nn" style="color: #555;">SOURCE</span> <span class="o" style="font-weight: 600;">#-</span><span class="p">}</span> <span class="kt" style="color: #458; font-weight: 600;">GHC</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Rename</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">Splice</span><span class="p">(</span> <span class="n" style="color: #333;">rnSpliceType</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span></span>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Doc</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">rnLHsDoc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">rnMbLHsDoc</span> <span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -68,7 +67,7 @@ import GHC.Data.FastString</td>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.LanguageExtensions</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">LangExt</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC71" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">nubBy</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">partition</span><span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">find</span></span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">nubBy</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">partition</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">unless</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">when</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="n" style="color: #333;">include</span> <span class="s" style="color: #d14;">"HsVersions.h"</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="123" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -124,19 +123,16 @@ data HsSigWcTypeScoping</td>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- "GHC.Hs.Type".</span></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC125" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigWcType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;">-<span id="LC127" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">-<span id="LC128" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ The error msg if the signature is not allowed to contain</span></span>
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<pre style="margin: 0;">-<span id="LC129" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- manually written inferred variables.</span></span>
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<pre style="margin: 0;"> <span id="LC126" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;"> <span id="LC127" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsSigWcType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC132" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigWcType</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;"><span class="idiff left">inf_err</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">}})</span></span>
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<pre style="margin: 0;">-<span id="LC133" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="kt" style="color: #458; font-weight: 600;">BindUnlessForall</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;"><span class="idiff left">inf_err</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">hs_ty</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">nwcs</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="n" style="color: #333;">body</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC128" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigWcType</span> <span class="n" style="color: #333;">doc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">}})</span></span>
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<pre style="margin: 0;">+<span id="LC129" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="kt" style="color: #458; font-weight: 600;">BindUnlessForall</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">hs_ty</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">nwcs</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="n" style="color: #333;">body</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ib_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC131" class="line" lang="haskell"> <span class="n" style="color: #333;">wc_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nwcs</span><span class="p">,</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ib_ty</span> <span class="p">}</span> <span class="kr" style="font-weight: 600;">in</span></span>
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<pre style="margin: 0;"> <span id="LC132" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">wc_ty</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC133" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC134" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsPatSigType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsSigWcTypeScoping</span></span>
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<pre style="margin: 0;">-<span id="LC139" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Maybe</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">SDoc</span></span></span>
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<pre style="margin: 0;">+<span id="LC135" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;"> <span id="LC136" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;"> <span id="LC137" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC138" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -147,10 +143,10 @@ rnHsPatSigType :: HsSigWcTypeScoping</td>
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<pre style="margin: 0;"> <span id="LC143" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Wildcards are allowed</span></span>
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144
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<pre style="margin: 0;"> <span id="LC144" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Pattern signature binders and scoping] in GHC.Hs.Type</span></span>
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<pre style="margin: 0;">-<span id="LC150" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsPatSigType</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;"><span class="idiff left">inf_err</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">sig_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC146" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsPatSigType</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;">sig_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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151
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<pre style="margin: 0;"> <span id="LC147" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">ty_sig_okay</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ScopedTypeVariables</span></span>
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<pre style="margin: 0;"> <span id="LC148" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkErr</span> <span class="n" style="color: #333;">ty_sig_okay</span> <span class="p">(</span><span class="n" style="color: #333;">unexpectedPatSigTypeErr</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC153" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;"><span class="idiff left">inf_err</span></span><span class="idiff right"> </span><span class="p">(</span><span class="n" style="color: #333;">hsPatSigType</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC149" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctx</span> <span class="p">(</span><span class="n" style="color: #333;">hsPatSigType</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC150" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">nwcs</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="n" style="color: #333;">body</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;"> <span id="LC151" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">sig_names</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPSRn</span> <span class="p">{</span> <span class="n" style="color: #333;">hsps_nwcs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nwcs</span><span class="p">,</span> <span class="n" style="color: #333;">hsps_imp_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC152" class="line" lang="haskell"> <span class="n" style="color: #333;">sig_ty'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsPS</span> <span class="p">{</span> <span class="n" style="color: #333;">hsps_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sig_names</span><span class="p">,</span> <span class="n" style="color: #333;">hsps_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -158,16 +154,15 @@ rnHsPatSigType scoping ctx inf_err sig_ty thing_inside</td>
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="haskell"> <span class="p">}</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC156" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The workhorse for rnHsSigWcType and rnHsPatSigType.</span></span>
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<pre style="margin: 0;">-<span id="LC161" class="line" lang="haskell"><span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsSigWcTypeScoping</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Maybe</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">SDoc</span></span></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"><span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsSigWcTypeScoping</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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162
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<pre style="margin: 0;"> <span id="LC158" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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163
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159
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<pre style="margin: 0;"> <span id="LC159" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Wildcard names</span></span>
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164
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160
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<pre style="margin: 0;"> <span id="LC160" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Implicitly bound type variable names</span></span>
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165
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161
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<pre style="margin: 0;"> <span id="LC161" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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166
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162
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">))</span></span>
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167
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163
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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168
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<pre style="margin: 0;">-<span id="LC168" class="line" lang="haskell"><span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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169
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<pre style="margin: 0;">-<span id="LC169" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">check_inferred_vars</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">hs_ty</span></span>
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170
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<pre style="margin: 0;">-<span id="LC170" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">free_vars</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">filterInScopeM</span> <span class="p">(</span><span class="n" style="color: #333;">extractHsTyRdrTyVars</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">)</span></span>
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164
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="haskell"><span class="n" style="color: #333;">rn_hs_sig_wc_type</span> <span class="n" style="color: #333;">scoping</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">thing_inside</span></span>
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165
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">free_vars</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">filterInScopeM</span> <span class="p">(</span><span class="n" style="color: #333;">extractHsTyRdrTyVars</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">)</span></span>
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171
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166
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<pre style="margin: 0;"> <span id="LC166" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">nwc_rdrs'</span><span class="p">,</span> <span class="n" style="color: #333;">tv_rdrs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">partition_nwcs</span> <span class="n" style="color: #333;">free_vars</span></span>
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172
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<pre style="margin: 0;"> <span id="LC167" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">nwc_rdrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nubL</span> <span class="n" style="color: #333;">nwc_rdrs'</span></span>
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173
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<pre style="margin: 0;"> <span id="LC168" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">implicit_bndrs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">scoping</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -318,17 +313,13 @@ of the HsWildCardBndrs structure, and we are done.</td>
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<pre style="margin: 0;"> <span id="LC313" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC314" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;"> <span id="LC315" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TypeOrKind</span></span>
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321
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">-<span id="LC322" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ The error msg if the signature is not allowed to contain</span></span>
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<pre style="margin: 0;">-<span id="LC323" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- manually written inferred variables.</span></span>
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<pre style="margin: 0;"> <span id="LC316" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;"> <span id="LC317" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC318" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Used for source-language type signatures</span></span>
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<pre style="margin: 0;"> <span id="LC319" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- that cannot have wildcards</span></span>
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<pre style="margin: 0;">-<span id="LC328" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;">level</span> <span class="n" style="color: #333;"><span class="idiff left">inf_err</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC320" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;">level</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceRn</span> <span class="s" style="color: #d14;">"rnHsSigType"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC322" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">rdr_env</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getLocalRdrEnv</span></span>
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<pre style="margin: 0;">-<span id="LC331" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">check_inferred_vars</span> <span class="n" style="color: #333;">ctx</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">hs_ty</span></span>
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">vars0</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">forAllOrNothing</span> <span class="p">(</span><span class="n" style="color: #333;">isLHsForAllTy</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC324" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">filterInScope</span> <span class="n" style="color: #333;">rdr_env</span></span>
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<pre style="margin: 0;"> <span id="LC325" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">extractHsTyRdrTyVars</span> <span class="n" style="color: #333;">hs_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -415,26 +406,6 @@ type signature, since the type signature implicitly carries their binding</td>
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<pre style="margin: 0;"> <span id="LC406" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">sites. This is less precise, but more accurate.</span></span>
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<pre style="margin: 0;"> <span id="LC407" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC408" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC418" class="line" lang="haskell"><span class="n" style="color: #333;">check_inferred_vars</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;">-<span id="LC419" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">-<span id="LC420" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ The error msg if the signature is not allowed to contain</span></span>
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<pre style="margin: 0;">-<span id="LC421" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- manually written inferred variables.</span></span>
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<pre style="margin: 0;">-<span id="LC422" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;">-<span id="LC423" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC424" class="line" lang="haskell"><span class="n" style="color: #333;">check_inferred_vars</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC425" class="line" lang="haskell"><span class="n" style="color: #333;">check_inferred_vars</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">msg</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC426" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">-<span id="LC427" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">find</span> <span class="p">((</span><span class="o" style="font-weight: 600;">==</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">InferredSpec</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">hsTyVarBndrFlag</span><span class="p">)</span> <span class="n" style="color: #333;">bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC428" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC429" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addErr</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">msg</span></span>
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<pre style="margin: 0;">-<span id="LC430" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC431" class="line" lang="haskell"> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsTyVarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">Specificity</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC432" class="line" lang="haskell"> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC433" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsParTy</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="n" style="color: #333;">ty'</span></span>
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<pre style="margin: 0;">-<span id="LC434" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsForAllTy</span> <span class="p">{</span> <span class="n" style="color: #333;">hst_tele</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllInvis</span> <span class="p">{</span> <span class="n" style="color: #333;">hsf_invis_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tvs</span> <span class="p">}}</span></span>
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<pre style="margin: 0;">-<span id="LC435" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">tvs</span></span>
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<pre style="margin: 0;">-<span id="LC436" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">-<span id="LC437" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC409" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- ******************************************************</span></span>
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<pre style="margin: 0;"> <span id="LC410" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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<pre style="margin: 0;"> <span id="LC411" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> LHsType and HsType</span></span>
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<li id="7dd1cd0f6f2164a14c83d9aa564dd32bc30e447a">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#7dd1cd0f6f2164a14c83d9aa564dd32bc30e447a"><strong>compiler/GHC/Rename/Module.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -34,7 +34,8 @@ import GHC.Rename.Utils ( HsDocContext(..), mapFvRn, bindLocalNames</td>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkDupRdrNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindLocalNamesFV</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkShadowedRdrNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">warnUnusedTypePatterns</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyVarEnvFVRn</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">newLocalBndrsRn</span></span>
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<pre style="margin: 0;">-<span id="LC37" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">withHsDocContext</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">withHsDocContext</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">noNestedForallsContextsErr</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addNoNestedForallsContextsErr</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">checkInferredVars</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Unbound</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">mkUnboundName</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">notInScopeErr</span> <span class="p">)</span></span>
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39
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Names</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Rename.Doc</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">rnHsDoc</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">rnMbLHsDoc</span> <span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -65,7 +66,6 @@ import GHC.Data.List.SetOps ( findDupsEq, removeDups, equivClasses )</td>
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<pre style="margin: 0;"> <span id="LC66" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Graph.Directed</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">SCC</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">flattenSCC</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">flattenSCCs</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Node</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">stronglyConnCompFromEdgedVerticesUniq</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span></span>
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<pre style="margin: 0;">-<span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">whenIsJust</span> <span class="p">)</span></span>
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69
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.OrdList</span></span>
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70
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<pre style="margin: 0;"> <span id="LC70" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">GHC.LanguageExtensions</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">LangExt</span></span>
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71
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71
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="371" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -371,7 +371,7 @@ rnHsForeignDecl :: ForeignDecl GhcPs -> RnM (ForeignDecl GhcRn, FreeVars)</td>
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371
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<pre style="margin: 0;"> <span id="LC371" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsForeignDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignImport</span> <span class="p">{</span> <span class="n" style="color: #333;">fd_name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">fd_sig_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ty</span><span class="p">,</span> <span class="n" style="color: #333;">fd_fi</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">spec</span> <span class="p">})</span></span>
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372
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<pre style="margin: 0;"> <span id="LC372" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">topEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HscEnv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getTopEnv</span></span>
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373
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<pre style="margin: 0;"> <span id="LC373" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">name'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupLocatedTopBndrRn</span> <span class="n" style="color: #333;">name</span></span>
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374
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<pre style="margin: 0;">-<span id="LC374" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignDeclCtx</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC374" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignDeclCtx</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;"> <span id="LC375" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC376" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Mark any PackageTarget style imports as coming from the current package</span></span>
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<pre style="margin: 0;"> <span id="LC377" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">unitId</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">homeUnit</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hsc_dflags</span> <span class="n" style="color: #333;">topEnv</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -383,7 +383,7 @@ rnHsForeignDecl (ForeignImport { fd_name = name, fd_sig_ty = ty, fd_fi = spec })</td>
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383
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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC384" class="line" lang="haskell"><span class="n" style="color: #333;">rnHsForeignDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignExport</span> <span class="p">{</span> <span class="n" style="color: #333;">fd_name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">fd_sig_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ty</span><span class="p">,</span> <span class="n" style="color: #333;">fd_fe</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">spec</span> <span class="p">})</span></span>
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385
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">name'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupLocatedOccRn</span> <span class="n" style="color: #333;">name</span></span>
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386
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<pre style="margin: 0;">-<span id="LC386" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignDeclCtx</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignDeclCtx</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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387
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForeignExport</span> <span class="p">{</span> <span class="n" style="color: #333;">fd_e_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtField</span></span>
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fd_name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">name'</span><span class="p">,</span> <span class="n" style="color: #333;">fd_sig_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ty'</span></span>
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fd_fe</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">spec</span> <span class="p">}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -424,11 +424,11 @@ patchCCallTarget unit callTarget =</td>
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<pre style="margin: 0;"> <span id="LC424" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC425" class="line" lang="haskell"><span class="n" style="color: #333;">rnSrcInstDecl</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">InstDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">InstDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC426" class="line" lang="haskell"><span class="n" style="color: #333;">rnSrcInstDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstD</span> <span class="p">{</span> <span class="n" style="color: #333;">tfid_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tfi</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC427" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tfi'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnTyFamInstDecl</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">NonAssocTyFamEqn</span></span> <span class="n" style="color: #333;">tfi</span></span>
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<pre style="margin: 0;">+<span id="LC427" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tfi'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnTyFamInstDecl</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NonAssocTyFamEqn</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NotClosedTyFam</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">tfi</span></span>
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428
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<pre style="margin: 0;"> <span id="LC428" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstD</span> <span class="p">{</span> <span class="n" style="color: #333;">tfid_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtField</span><span class="p">,</span> <span class="n" style="color: #333;">tfid_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tfi'</span> <span class="p">},</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC429" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC430" class="line" lang="haskell"><span class="n" style="color: #333;">rnSrcInstDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataFamInstD</span> <span class="p">{</span> <span class="n" style="color: #333;">dfid_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dfi</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC431" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">dfi'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnDataFamInstDecl</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">NonAssocTyFamEqn</span></span> <span class="n" style="color: #333;">dfi</span></span>
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<pre style="margin: 0;">+<span id="LC431" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">dfi'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnDataFamInstDecl</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NonAssocTyFamEqn</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NotClosedTyFam</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">dfi</span></span>
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<pre style="margin: 0;"> <span id="LC432" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataFamInstD</span> <span class="p">{</span> <span class="n" style="color: #333;">dfid_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtField</span><span class="p">,</span> <span class="n" style="color: #333;">dfid_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dfi'</span> <span class="p">},</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC433" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC434" class="line" lang="haskell"><span class="n" style="color: #333;">rnSrcInstDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClsInstD</span> <span class="p">{</span> <span class="n" style="color: #333;">cid_inst</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cid</span> <span class="p">})</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -602,13 +602,14 @@ rnClsInstDecl (ClsInstDecl { cid_poly_ty = inst_ty, cid_binds = mbinds</td>
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602
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<pre style="margin: 0;"> <span id="LC602" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">cid_sigs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">uprags</span><span class="p">,</span> <span class="n" style="color: #333;">cid_tyfam_insts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ats</span></span>
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603
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<pre style="margin: 0;"> <span id="LC603" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">cid_overlap_mode</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">oflag</span></span>
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<pre style="margin: 0;"> <span id="LC604" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">cid_datafam_insts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adts</span> <span class="p">})</span></span>
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605
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<pre style="margin: 0;">-<span id="LC605" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inst_ty'</span><span class="p">,</span> <span class="n" style="color: #333;">inst_fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">inst_ty</span></span>
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<pre style="margin: 0;">+<span id="LC605" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">checkInferredVars</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">inst_ty</span></span>
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<pre style="margin: 0;">+<span id="LC606" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">inst_ty'</span><span class="p">,</span> <span class="n" style="color: #333;">inst_fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">inst_ty</span></span>
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<pre style="margin: 0;"> <span id="LC607" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">ktv_names</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">head_ty'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitLHsInstDeclTy</span> <span class="n" style="color: #333;">inst_ty'</span></span>
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608
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<pre style="margin: 0;"> <span id="LC608" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check if there are any nested `forall`s or contexts, which are</span></span>
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608
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609
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<pre style="margin: 0;"> <span id="LC609" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- illegal in the type of an instance declaration (see</span></span>
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609
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610
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<pre style="margin: 0;"> <span id="LC610" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [No nested foralls or contexts in instance types] in</span></span>
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610
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611
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<pre style="margin: 0;"> <span id="LC611" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- GHC.Hs.Type)...</span></span>
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611
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<pre style="margin: 0;">-<span id="LC611" class="line" lang="haskell"> <span class="n" style="color: #333;">mb_nested_msg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">no<span class="idiff left right">_nested_foralls_contexts_e</span>rr</span></span>
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<pre style="margin: 0;">+<span id="LC612" class="line" lang="haskell"> <span class="n" style="color: #333;">mb_nested_msg</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">no<span class="idiff left right">NestedForallsContextsE</span>rr</span></span>
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<pre style="margin: 0;"> <span id="LC613" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Instance head"</span><span class="p">)</span> <span class="n" style="color: #333;">head_ty'</span></span>
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<pre style="margin: 0;"> <span id="LC614" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ...then check if the instance head is actually headed by a</span></span>
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<pre style="margin: 0;"> <span id="LC615" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- class type constructor...</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -628,17 +629,10 @@ rnClsInstDecl (ClsInstDecl { cid_poly_ty = inst_ty, cid_binds = mbinds</td>
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<pre style="margin: 0;"> <span id="LC629" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with an error message if there isn't one. To avoid excessive</span></span>
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<pre style="margin: 0;"> <span id="LC630" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- amounts of error messages, we will only report one of the errors</span></span>
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<pre style="margin: 0;"> <span id="LC631" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- from mb_nested_msg or eith_cls at a time.</span></span>
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<pre style="margin: 0;">-<span id="LC631" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">eith_cls</span> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">mb_nested_msg</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC632" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">cls</span></span>
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<pre style="margin: 0;">-<span id="LC633" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">-<span id="LC634" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The instance is malformed. We'd still like</span></span>
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<pre style="margin: 0;">-<span id="LC635" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- to make *some* progress (rather than failing outright), so</span></span>
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<pre style="margin: 0;">-<span id="LC636" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we report an error and continue for as long as we can.</span></span>
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<pre style="margin: 0;">-<span id="LC637" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Importantly, this error should be thrown before we reach the</span></span>
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<pre style="margin: 0;">-<span id="LC638" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- typechecker, lest we encounter different errors that are</span></span>
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<pre style="margin: 0;">-<span id="LC639" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- hopelessly confusing (such as the one in #16114).</span></span>
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<pre style="margin: 0;">-<span id="LC640" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">err_msg</span></span>
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641
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<pre style="margin: 0;">-<span id="LC641" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkUnboundName</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcOccFS</span> <span class="p">(</span><span class="n" style="color: #333;">fsLit</span> <span class="s" style="color: #d14;">"<class>"</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC632" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">mb_nested_msg</span><span class="p">,</span> <span class="n" style="color: #333;">eith_cls</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC633" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">cls</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">cls</span></span>
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<pre style="margin: 0;">+<span id="LC634" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">err1</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bail_out</span> <span class="n" style="color: #333;">err1</span></span>
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<pre style="margin: 0;">+<span id="LC635" class="line" lang="haskell"> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">err2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bail_out</span> <span class="n" style="color: #333;">err2</span></span>
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<pre style="margin: 0;"> <span id="LC636" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC637" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Rename the bindings</span></span>
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<pre style="margin: 0;"> <span id="LC638" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The typechecker (not the renamer) checks that all</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -680,6 +674,15 @@ rnClsInstDecl (ClsInstDecl { cid_poly_ty = inst_ty, cid_binds = mbinds</td>
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<pre style="margin: 0;"> <span id="LC674" class="line" lang="haskell"> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">GenericCtx</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"an instance declaration"</span></span>
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<pre style="margin: 0;"> <span id="LC675" class="line" lang="haskell"> <span class="n" style="color: #333;">inf_err</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Inferred type variables are not allowed"</span><span class="p">)</span></span>
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676
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<pre style="margin: 0;"> <span id="LC676" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC677" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The instance is malformed. We'd still like to make *some* progress</span></span>
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<pre style="margin: 0;">+<span id="LC678" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (rather than failing outright), so we report an error and continue for</span></span>
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<pre style="margin: 0;">+<span id="LC679" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- as long as we can. Importantly, this error should be thrown before we</span></span>
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<pre style="margin: 0;">+<span id="LC680" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- reach the typechecker, lest we encounter different errors that are</span></span>
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<pre style="margin: 0;">+<span id="LC681" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- hopelessly confusing (such as the one in #16114).</span></span>
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<pre style="margin: 0;">+<span id="LC682" class="line" lang="haskell"> <span class="n" style="color: #333;">bail_out</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC683" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">err_msg</span></span>
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<pre style="margin: 0;">+<span id="LC684" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkUnboundName</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcOccFS</span> <span class="p">(</span><span class="n" style="color: #333;">fsLit</span> <span class="s" style="color: #d14;">"<class>"</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC685" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC686" class="line" lang="haskell"><span class="n" style="color: #333;">rnFamInstEqn</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;"> <span id="LC687" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInfo</span></span>
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<pre style="margin: 0;"> <span id="LC688" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FreeKiTyVars</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -760,8 +763,12 @@ rnFamInstEqn doc atfi rhs_kvars</td>
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<pre style="margin: 0;"> <span id="LC763" class="line" lang="haskell"> <span class="n" style="color: #333;">all_nms</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">all_imp_var_names</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">hsLTyVarNames</span> <span class="n" style="color: #333;">bndrs'</span></span>
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764
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<pre style="margin: 0;"> <span id="LC764" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">warnUnusedTypePatterns</span> <span class="n" style="color: #333;">all_nms</span> <span class="n" style="color: #333;">nms_used</span></span>
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765
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<pre style="margin: 0;"> <span id="LC765" class="line" lang="haskell"></span>
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763
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<pre style="margin: 0;">-<span id="LC763" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">all_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">rhs_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">pat_fvs</span><span class="p">)</span> <span class="p">`</span><span class="n" style="color: #333;">addOneFV</span><span class="p">`</span> <span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">tycon'</span></span>
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764
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<pre style="margin: 0;">-<span id="LC764" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- type instance => use, hence addOneFV</span></span>
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<pre style="margin: 0;">+<span id="LC766" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">eqn_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">pat_fvs</span></span>
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767
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<pre style="margin: 0;">+<span id="LC767" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Type family equations and occurrences]</span></span>
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768
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<pre style="margin: 0;">+<span id="LC768" class="line" lang="haskell"> <span class="n" style="color: #333;">all_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">atfi</span> <span class="kr" style="font-weight: 600;">of</span></span>
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769
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<pre style="margin: 0;">+<span id="LC769" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFam</span></span>
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<pre style="margin: 0;">+<span id="LC770" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">eqn_fvs</span></span>
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771
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<pre style="margin: 0;">+<span id="LC771" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">eqn_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">addOneFV</span><span class="p">`</span> <span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">tycon'</span></span>
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765
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772
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<pre style="margin: 0;"> <span id="LC772" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC773" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">all_imp_var_names</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Wildcards in family instances]</span></span>
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<pre style="margin: 0;"> <span id="LC774" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsib_body</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -776,14 +783,14 @@ rnFamInstEqn doc atfi rhs_kvars</td>
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783
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<pre style="margin: 0;"> <span id="LC783" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The parent class, if we are dealing with an associated type family</span></span>
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784
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<pre style="margin: 0;"> <span id="LC784" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- instance.</span></span>
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785
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<pre style="margin: 0;"> <span id="LC785" class="line" lang="haskell"> <span class="n" style="color: #333;">mb_cls</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">atfi</span> <span class="kr" style="font-weight: 600;">of</span></span>
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779
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<pre style="margin: 0;">-<span id="LC779" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span> <span class="idiff left right"> </span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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786
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<pre style="margin: 0;">+<span id="LC786" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span> <span class="kr" style="font-weight: 600;"><span class="idiff left right">_</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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780
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787
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<pre style="margin: 0;"> <span id="LC787" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamDeflt</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">cls</span></span>
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781
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788
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<pre style="margin: 0;"> <span id="LC788" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInst</span> <span class="n" style="color: #333;">cls</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">cls</span></span>
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782
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789
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<pre style="margin: 0;"> <span id="LC789" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC790" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The type variables from the instance head, if we are dealing with an</span></span>
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<pre style="margin: 0;"> <span id="LC791" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- associated type family instance.</span></span>
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<pre style="margin: 0;"> <span id="LC792" class="line" lang="haskell"> <span class="n" style="color: #333;">inst_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">atfi</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC786" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span> <span class="idiff left right"> </span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">+<span id="LC793" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span> <span class="kr" style="font-weight: 600;"><span class="idiff left right">_</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;"> <span id="LC794" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamDeflt</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;"> <span id="LC795" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInst</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">inst_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">inst_tvs</span></span>
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<pre style="margin: 0;"> <span id="LC796" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -806,48 +813,62 @@ rnTyFamInstDecl :: AssocTyFamInfo</td>
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<pre style="margin: 0;"> <span id="LC813" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyFamInstDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<pre style="margin: 0;"> <span id="LC814" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC815" class="line" lang="haskell"><span class="n" style="color: #333;">rnTyFamInstDecl</span> <span class="n" style="color: #333;">atfi</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tfid_eqn</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqn</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC809" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">eqn'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="n" style="color: #333;">atfi</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NotClosedTyFam</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">eqn</span></span>
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<pre style="margin: 0;">+<span id="LC816" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">eqn'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="n" style="color: #333;">atfi</span> <span class="n" style="color: #333;">eqn</span></span>
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<pre style="margin: 0;"> <span id="LC817" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">tfid_eqn</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqn'</span> <span class="p">},</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC818" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC819" class="line" lang="haskell"><span class="cd">-- | Tracks whether we are renaming:</span></span>
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820
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<pre style="margin: 0;"> <span id="LC820" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC821" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 1. A type family equation that is not associated</span></span>
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<pre style="margin: 0;">-<span id="LC815" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- with a parent type class ('NonAssocTyFamEqn')</span></span>
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<pre style="margin: 0;">+<span id="LC822" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- with a parent type class ('NonAssocTyFamEqn'). Examples:</span></span>
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<pre style="margin: 0;">+<span id="LC823" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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824
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<pre style="margin: 0;">+<span id="LC824" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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825
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<pre style="margin: 0;">+<span id="LC825" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type family F a</span></span>
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826
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<pre style="margin: 0;">+<span id="LC826" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type instance F Int = Bool -- NonAssocTyFamEqn NotClosed</span></span>
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827
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<pre style="margin: 0;">+<span id="LC827" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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828
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<pre style="margin: 0;">+<span id="LC828" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type family G a where</span></span>
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829
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<pre style="margin: 0;">+<span id="LC829" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- G Int = Bool -- NonAssocTyFamEqn Closed</span></span>
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830
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<pre style="margin: 0;">+<span id="LC830" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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831
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<pre style="margin: 0;">+<span id="LC831" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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832
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<pre style="margin: 0;">+<span id="LC832" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 2. An associated type family default declaration ('AssocTyFamDeflt').</span></span>
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833
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<pre style="margin: 0;">+<span id="LC833" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Example:</span></span>
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816
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834
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<pre style="margin: 0;"> <span id="LC834" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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817
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<pre style="margin: 0;">-<span id="LC817" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 2. An associated type family default declaration ('AssocTyFamDeflt')</span></span>
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835
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<pre style="margin: 0;">+<span id="LC835" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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836
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<pre style="margin: 0;">+<span id="LC836" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- class C a where</span></span>
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837
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<pre style="margin: 0;">+<span id="LC837" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type A a</span></span>
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838
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<pre style="margin: 0;">+<span id="LC838" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type instance A a = a -> a -- AssocTyFamDeflt C</span></span>
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839
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<pre style="margin: 0;">+<span id="LC839" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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818
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840
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<pre style="margin: 0;"> <span id="LC840" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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819
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<pre style="margin: 0;">-<span id="LC819" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 3. An associated type family instance declaration ('AssocTyFamInst')</span></span>
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841
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<pre style="margin: 0;">+<span id="LC841" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 3. An associated type family instance declaration ('AssocTyFamInst').</span></span>
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842
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<pre style="margin: 0;">+<span id="LC842" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Example:</span></span>
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843
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<pre style="margin: 0;">+<span id="LC843" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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844
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<pre style="margin: 0;">+<span id="LC844" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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845
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<pre style="margin: 0;">+<span id="LC845" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- instance C a => C [a] where</span></span>
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<pre style="margin: 0;">+<span id="LC846" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- type A [a] = Bool -- AssocTyFamInst C [a]</span></span>
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<pre style="margin: 0;">+<span id="LC847" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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<pre style="margin: 0;"> <span id="LC848" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInfo</span></span>
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<pre style="margin: 0;"> <span id="LC849" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NonAssocTyFamEqn</span></span>
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<pre style="margin: 0;">-<span id="LC822" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamDeflt</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="c1" style="color: #998; font-style: italic;">-- Name of the parent class</span></span>
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<pre style="margin: 0;">-<span id="LC823" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInst</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="c1" style="color: #998; font-style: italic;">-- Name of the parent class</span></span>
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<pre style="margin: 0;">-<span id="LC824" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Names of the tyvars of the parent instance decl</span></span>
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<pre style="margin: 0;">+<span id="LC850" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFamInfo</span> <span class="c1" style="color: #998; font-style: italic;">-- Is this a closed type family?</span></span>
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<pre style="margin: 0;">+<span id="LC851" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamDeflt</span></span>
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<pre style="margin: 0;">+<span id="LC852" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="c1" style="color: #998; font-style: italic;">-- Name of the parent class</span></span>
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<pre style="margin: 0;">+<span id="LC853" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInst</span></span>
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<pre style="margin: 0;">+<span id="LC854" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="c1" style="color: #998; font-style: italic;">-- Name of the parent class</span></span>
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<pre style="margin: 0;">+<span id="LC855" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Names of the tyvars of the parent instance decl</span></span>
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<pre style="margin: 0;"> <span id="LC856" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC857" class="line" lang="haskell"><span class="cd">-- | Tracks whether we are renaming an equation in a closed type family</span></span>
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<pre style="margin: 0;"> <span id="LC858" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- equation ('ClosedTyFam') or not ('NotClosedTyFam').</span></span>
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<pre style="margin: 0;"> <span id="LC859" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFamInfo</span></span>
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<pre style="margin: 0;"> <span id="LC860" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">NotClosedTyFam</span></span>
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<pre style="margin: 0;">-<span id="LC830" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFam</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="kt" style="color: #458; font-weight: 600;">RdrName</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<pre style="margin: 0;">-<span id="LC831" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The names (RdrName and Name) of the closed type family</span></span>
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<pre style="margin: 0;">+<span id="LC861" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFam</span></span>
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<pre style="margin: 0;"> <span id="LC862" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC863" class="line" lang="haskell"><span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">AssocTyFamInfo</span></span>
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<pre style="margin: 0;">-<span id="LC834" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFamInfo</span></span>
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835
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<pre style="margin: 0;"> <span id="LC864" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyFamInstEqn</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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836
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865
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<pre style="margin: 0;"> <span id="LC865" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamInstEqn</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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837
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<pre style="margin: 0;">-<span id="LC837" class="line" lang="haskell"><span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="n" style="color: #333;">atfi</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">ctf_info</span></span></span>
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866
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<pre style="margin: 0;">+<span id="LC866" class="line" lang="haskell"><span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="n" style="color: #333;">atfi</span></span>
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838
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867
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"> <span class="n" style="color: #333;">eqn</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FamEqn</span> <span class="p">{</span> <span class="n" style="color: #333;">feqn_tycon</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tycon</span></span>
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839
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868
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<pre style="margin: 0;"> <span id="LC868" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">feqn_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">}})</span></span>
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<pre style="margin: 0;">-<span id="LC840" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">rhs_kvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extractHsTyRdrTyVarsKindVars</span> <span class="n" style="color: #333;">rhs</span></span>
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841
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<pre style="margin: 0;">-<span id="LC841" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">eqn'</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC842" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">FamEqn</span> <span class="p">{</span> <span class="n" style="color: #333;">feqn_tycon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">tycon'</span> <span class="p">}}),</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span></span>
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843
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<pre style="margin: 0;">-<span id="LC843" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnFamInstEqn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TySynCtx</span> <span class="n" style="color: #333;">tycon</span><span class="p">)</span> <span class="n" style="color: #333;">atfi</span> <span class="n" style="color: #333;">rhs_kvs</span> <span class="n" style="color: #333;">eqn</span> <span class="n" style="color: #333;">rnTySyn</span></span>
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844
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<pre style="margin: 0;">-<span id="LC844" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ctf_info</span> <span class="kr" style="font-weight: 600;">of</span></span>
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845
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<pre style="margin: 0;">-<span id="LC845" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NotClosedTyFam</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="nb" style="color: #0086b3;">()</span></span>
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846
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<pre style="margin: 0;">-<span id="LC846" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ClosedTyFam</span> <span class="n" style="color: #333;">fam_rdr_name</span> <span class="n" style="color: #333;">fam_name</span> <span class="o" style="font-weight: 600;">-></span></span>
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847
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<pre style="margin: 0;">-<span id="LC847" class="line" lang="haskell"> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">fam_name</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">tycon'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num old old_line" data-linenumber="848" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
848
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<pre style="margin: 0;">-<span id="LC848" class="line" lang="haskell"> <span class="n" style="color: #333;">withHsDocContext</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TyFamilyCtx</span> <span class="n" style="color: #333;">fam_rdr_name</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num old old_line" data-linenumber="849" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
849
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<pre style="margin: 0;">-<span id="LC849" class="line" lang="haskell"> <span class="n" style="color: #333;">wrongTyFamName</span> <span class="n" style="color: #333;">fam_name</span> <span class="n" style="color: #333;">tycon'</span></span>
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850
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<pre style="margin: 0;">-<span id="LC850" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">eqn'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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869
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<pre style="margin: 0;">+<span id="LC869" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rnFamInstEqn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TySynCtx</span> <span class="n" style="color: #333;">tycon</span><span class="p">)</span> <span class="n" style="color: #333;">atfi</span> <span class="n" style="color: #333;">rhs_kvs</span> <span class="n" style="color: #333;">eqn</span> <span class="n" style="color: #333;">rnTySyn</span></span>
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870
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<pre style="margin: 0;">+<span id="LC870" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC871" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_kvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extractHsTyRdrTyVarsKindVars</span> <span class="n" style="color: #333;">rhs</span></span>
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872
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC873" class="line" lang="haskell"><span class="n" style="color: #333;">rnTyFamDefltDecl</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<pre style="margin: 0;"> <span id="LC874" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyFamDefltDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -995,6 +1016,51 @@ was previously bound by the `instance C (Maybe a)` part. (see #16116).</td>
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1016
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<pre style="margin: 0;"> <span id="LC1016" class="line" lang="haskell"></span>
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996
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1017
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<pre style="margin: 0;"> <span id="LC1017" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">In each case, the function which detects improperly bound variables on the RHS</span></span>
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997
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1018
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<pre style="margin: 0;"> <span id="LC1018" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">is GHC.Tc.Validity.checkValidFamPats.</span></span>
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1019
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<pre style="margin: 0;">+<span id="LC1019" class="line" lang="haskell"></span>
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1020
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<pre style="margin: 0;">+<span id="LC1020" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Type family equations and occurrences]</span></span>
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1021
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<pre style="margin: 0;">+<span id="LC1021" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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1022
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<pre style="margin: 0;">+<span id="LC1022" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">In most data/type family equations, the type family name used in the equation</span></span>
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1023
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<pre style="margin: 0;">+<span id="LC1023" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">is treated as an occurrence. For example:</span></span>
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1024
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<pre style="margin: 0;">+<span id="LC1024" class="line" lang="haskell"></span>
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1025
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<pre style="margin: 0;">+<span id="LC1025" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> module A where</span></span>
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1026
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<pre style="margin: 0;">+<span id="LC1026" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> type family F a</span></span>
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1027
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<pre style="margin: 0;">+<span id="LC1027" class="line" lang="haskell"></span>
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1028
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<pre style="margin: 0;">+<span id="LC1028" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> module B () where</span></span>
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1029
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<pre style="margin: 0;">+<span id="LC1029" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> import B (F)</span></span>
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1030
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<pre style="margin: 0;">+<span id="LC1030" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> type instance F Int = Bool</span></span>
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1031
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<pre style="margin: 0;">+<span id="LC1031" class="line" lang="haskell"></span>
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1032
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<pre style="margin: 0;">+<span id="LC1032" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We do not want to warn about `F` being unused in the module `B`, as the</span></span>
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1033
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<pre style="margin: 0;">+<span id="LC1033" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">instance constitutes a use site for `F`. The exception to this rule is closed</span></span>
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1034
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<pre style="margin: 0;">+<span id="LC1034" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">type families, whose equations constitute a definition, not occurrences. For</span></span>
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1035
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<pre style="margin: 0;">+<span id="LC1035" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">example:</span></span>
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1036
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<pre style="margin: 0;">+<span id="LC1036" class="line" lang="haskell"></span>
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1037
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<pre style="margin: 0;">+<span id="LC1037" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> module C () where</span></span>
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1038
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<pre style="margin: 0;">+<span id="LC1038" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> type family CF a where</span></span>
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1039
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<pre style="margin: 0;">+<span id="LC1039" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> CF Char = Float</span></span>
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1040
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<pre style="margin: 0;">+<span id="LC1040" class="line" lang="haskell"></span>
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1041
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<pre style="margin: 0;">+<span id="LC1041" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Here, we /do/ want to warn that `CF` is unused in the module `C`, as it is</span></span>
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1042
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<pre style="margin: 0;">+<span id="LC1042" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">defined but not used (#18470).</span></span>
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1043
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<pre style="margin: 0;">+<span id="LC1043" class="line" lang="haskell"></span>
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1044
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<pre style="margin: 0;">+<span id="LC1044" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">GHC accomplishes this in rnFamInstEqn when determining the set of free</span></span>
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1045
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<pre style="margin: 0;">+<span id="LC1045" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">variables to return at the end. If renaming a data family or open type family</span></span>
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1046
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<pre style="margin: 0;">+<span id="LC1046" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">equation, we add the name of the type family constructor to the set of returned</span></span>
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1047
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<pre style="margin: 0;">+<span id="LC1047" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">free variables to ensure that the name is marked as an occurrence. If renaming</span></span>
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1048
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<pre style="margin: 0;">+<span id="LC1048" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">a closed type family equation, we avoid adding the type family constructor name</span></span>
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1049
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<pre style="margin: 0;">+<span id="LC1049" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">to the free variables. This is quite simple, but it is not a perfect solution.</span></span>
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1050
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<pre style="margin: 0;">+<span id="LC1050" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Consider this example:</span></span>
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1051
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<pre style="margin: 0;">+<span id="LC1051" class="line" lang="haskell"></span>
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1052
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<pre style="margin: 0;">+<span id="LC1052" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> module X () where</span></span>
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1053
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<pre style="margin: 0;">+<span id="LC1053" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> type family F a where</span></span>
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1054
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<pre style="margin: 0;">+<span id="LC1054" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> F Int = Bool</span></span>
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1055
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<pre style="margin: 0;">+<span id="LC1055" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> F Double = F Int</span></span>
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1056
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<pre style="margin: 0;">+<span id="LC1056" class="line" lang="haskell"></span>
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1057
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<pre style="margin: 0;">+<span id="LC1057" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">At present, GHC will treat any use of a type family constructor on the RHS of a</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1058" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1058
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<pre style="margin: 0;">+<span id="LC1058" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">type family equation as an occurrence. Since `F` is used on the RHS of the</span></span>
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<td class="diff-line-num new new_line" data-linenumber="1059" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
1059
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<pre style="margin: 0;">+<span id="LC1059" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">second equation of `F`, it is treated as an occurrence, causing `F` not to be</span></span>
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<pre style="margin: 0;">+<span id="LC1060" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">warned about. This is not ideal, since `F` isn't exported—it really /should/</span></span>
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<pre style="margin: 0;">+<span id="LC1061" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">cause a warning to be emitted. There is some discussion in #10089/#12920 about</span></span>
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<pre style="margin: 0;">+<span id="LC1062" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">how this limitation might be overcome, but until then, we stick to the</span></span>
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<pre style="margin: 0;">+<span id="LC1063" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">simplistic solution above, as it fixes the egregious bug in #18470.</span></span>
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1064
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<pre style="margin: 0;"> <span id="LC1064" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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1065
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<pre style="margin: 0;"> <span id="LC1065" class="line" lang="haskell"></span>
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1066
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<pre style="margin: 0;"> <span id="LC1066" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1010,22 +1076,22 @@ rnSrcDerivDecl :: DerivDecl GhcPs -> RnM (DerivDecl GhcRn, FreeVars)</td>
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1010
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1076
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<pre style="margin: 0;"> <span id="LC1076" class="line" lang="haskell"><span class="n" style="color: #333;">rnSrcDerivDecl</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DerivDecl</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">mds</span> <span class="n" style="color: #333;">overlap</span><span class="p">)</span></span>
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1011
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1077
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<pre style="margin: 0;"> <span id="LC1077" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">standalone_deriv_ok</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xoptM</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">StandaloneDeriving</span></span>
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1012
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1078
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<pre style="margin: 0;"> <span id="LC1078" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">unless</span> <span class="n" style="color: #333;">standalone_deriv_ok</span> <span class="p">(</span><span class="n" style="color: #333;">addErr</span> <span class="n" style="color: #333;">standaloneDerivErr</span><span class="p">)</span></span>
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1013
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<pre style="margin: 0;">-<span id="LC1013" class="line" lang="haskell"> <span class="p">;</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">mds'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fvs</span></span><span class="p"><span class="idiff right">)</span></span></span>
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1014
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<pre style="margin: 0;">-<span id="LC1014" class="line" lang="haskell"> <span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rnLDerivStrategy</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ctxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mds</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rnHsSigWcType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ctxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">inf_err</span></span> <span class="n" style="color: #333;">ty</span></span>
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1079
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<pre style="margin: 0;">+<span id="LC1079" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;"><span class="idiff left">checkInferredVars</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ctxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">inf_err</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">nowc_ty</span></span></span>
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1080
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<pre style="margin: 0;">+<span id="LC1080" class="line" lang="haskell"> <span class="p"><span class="idiff left">;</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">mds'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty'</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fvs</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rnLDerivStrategy</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ctxt</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mds</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rnHsSigWcType</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ctxt</span></span> <span class="n" style="color: #333;">ty</span></span>
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1015
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1081
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<pre style="margin: 0;"> <span id="LC1081" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check if there are any nested `forall`s or contexts, which are</span></span>
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1016
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1082
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<pre style="margin: 0;"> <span id="LC1082" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- illegal in the type of an instance declaration (see</span></span>
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1017
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1083
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<pre style="margin: 0;"> <span id="LC1083" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [No nested foralls or contexts in instance types] in</span></span>
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1018
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1084
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<pre style="margin: 0;"> <span id="LC1084" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- GHC.Hs.Type).</span></span>
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1019
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<pre style="margin: 0;">-<span id="LC1019" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">whenIsJust</span> <span class="p">(</span><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span></span>
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<pre style="margin: 0;">-<span id="LC1020" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Standalone-derived instance head"</span><span class="p">)</span></span>
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1021
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<pre style="margin: 0;">-<span id="LC1021" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">getLHsInstDeclHead</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">dropWildCards</span> <span class="n" style="color: #333;">ty'</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC1022" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">err_msg</span></span>
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1085
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<pre style="margin: 0;">+<span id="LC1085" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">ctxt</span></span>
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1086
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<pre style="margin: 0;">+<span id="LC1086" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Standalone-derived instance head"</span><span class="p">)</span></span>
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1087
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<pre style="margin: 0;">+<span id="LC1087" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">getLHsInstDeclHead</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">dropWildCards</span> <span class="n" style="color: #333;">ty'</span><span class="p">)</span></span>
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1023
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1088
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<pre style="margin: 0;"> <span id="LC1088" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">warnNoDerivStrat</span> <span class="n" style="color: #333;">mds'</span> <span class="n" style="color: #333;">loc</span></span>
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1024
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1089
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<pre style="margin: 0;"> <span id="LC1089" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DerivDecl</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">ty'</span> <span class="n" style="color: #333;">mds'</span> <span class="n" style="color: #333;">overlap</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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1025
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1090
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<pre style="margin: 0;"> <span id="LC1090" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1026
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1091
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<pre style="margin: 0;"> <span id="LC1091" class="line" lang="haskell"> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DerivDeclCtx</span></span>
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1027
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1092
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<pre style="margin: 0;"> <span id="LC1092" class="line" lang="haskell"> <span class="n" style="color: #333;">inf_err</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Inferred type variables are not allowed"</span><span class="p">)</span></span>
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1028
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<pre style="margin: 0;">-<span id="LC1028" class="line" lang="haskell"> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">getLoc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hswc_body</span> <span class="n" style="color: #333;">ty</span></span>
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1093
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<pre style="margin: 0;">+<span id="LC1093" class="line" lang="haskell"> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">getLoc</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hsib_body</span> <span class="n" style="color: #333;">nowc_ty</span></span>
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1094
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<pre style="margin: 0;">+<span id="LC1094" class="line" lang="haskell"> <span class="n" style="color: #333;">nowc_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dropWildCards</span> <span class="n" style="color: #333;">ty</span></span>
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1029
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1095
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<pre style="margin: 0;"> <span id="LC1095" class="line" lang="haskell"></span>
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1030
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1096
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<pre style="margin: 0;"> <span id="LC1096" class="line" lang="haskell"><span class="n" style="color: #333;">standaloneDerivErr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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1031
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1097
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<pre style="margin: 0;"> <span id="LC1097" class="line" lang="haskell"><span class="n" style="color: #333;">standaloneDerivErr</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1157" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1091,7 +1157,7 @@ bindRuleTmVars doc tyvs vars names thing_inside</td>
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1091
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1157
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<pre style="margin: 0;"> <span id="LC1157" class="line" lang="haskell"></span>
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1092
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1158
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<pre style="margin: 0;"> <span id="LC1158" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RuleBndrSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">bsig</span><span class="p">))</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">vars</span><span class="p">)</span></span>
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1093
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1159
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<pre style="margin: 0;"> <span id="LC1159" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">ns</span><span class="p">)</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1094
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<pre style="margin: 0;">-<span id="LC1094" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rnHsPatSigType</span> <span class="n" style="color: #333;">bind_free_tvs</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">bsig</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">bsig'</span> <span class="o" style="font-weight: 600;">-></span></span>
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1160
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<pre style="margin: 0;">+<span id="LC1160" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rnHsPatSigType</span> <span class="n" style="color: #333;">bind_free_tvs</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">bsig</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">bsig'</span> <span class="o" style="font-weight: 600;">-></span></span>
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1095
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1161
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<pre style="margin: 0;"> <span id="LC1161" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">vars</span> <span class="n" style="color: #333;">ns</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">vars'</span> <span class="o" style="font-weight: 600;">-></span></span>
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1096
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1162
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<pre style="margin: 0;"> <span id="LC1162" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RuleBndrSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="n" style="color: #333;">bsig'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">vars'</span><span class="p">)</span></span>
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1097
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1163
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<pre style="margin: 0;"> <span id="LC1163" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1431" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1497" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1431,7 +1497,7 @@ rnStandaloneKindSignature tc_names (StandaloneKindSig _ v ki)</td>
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1431
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1497
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<pre style="margin: 0;"> <span id="LC1497" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">unless</span> <span class="n" style="color: #333;">standalone_ki_sig_ok</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">addErr</span> <span class="n" style="color: #333;">standaloneKiSigErr</span></span>
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1432
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1498
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<pre style="margin: 0;"> <span id="LC1498" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">new_v</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupSigCtxtOccRn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TopSigCtxt</span> <span class="n" style="color: #333;">tc_names</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"standalone kind signature"</span><span class="p">)</span> <span class="n" style="color: #333;">v</span></span>
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1433
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1499
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<pre style="margin: 0;"> <span id="LC1499" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">doc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSigCtx</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">v</span><span class="p">)</span></span>
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1434
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<pre style="margin: 0;">-<span id="LC1434" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ki</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">KindLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ki</span></span>
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1500
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<pre style="margin: 0;">+<span id="LC1500" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">new_ki</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">KindLevel</span> <span class="n" style="color: #333;">ki</span></span>
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1435
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1501
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<pre style="margin: 0;"> <span id="LC1501" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSig</span> <span class="n" style="color: #333;">noExtField</span> <span class="n" style="color: #333;">new_v</span> <span class="n" style="color: #333;">new_ki</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span></span>
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1436
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1502
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<pre style="margin: 0;"> <span id="LC1502" class="line" lang="haskell"> <span class="p">}</span></span>
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1437
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1503
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<pre style="margin: 0;"> <span id="LC1503" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1841" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1907" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1841,15 +1907,14 @@ rnLHsDerivingClause doc</td>
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1841
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1907
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<pre style="margin: 0;"> <span id="LC1907" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_clause_pred</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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1842
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1908
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<pre style="margin: 0;"> <span id="LC1908" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_clause_pred</span> <span class="n" style="color: #333;">pred_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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1843
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1909
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<pre style="margin: 0;"> <span id="LC1909" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">inf_err</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Inferred type variables are not allowed"</span><span class="p">)</span></span>
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1844
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<pre style="margin: 0;">-<span id="LC1844" class="line" lang="haskell"> <span class="n" style="color: #333;">ret</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">pred_ty'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">pred_ty</span></span>
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1910
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<pre style="margin: 0;">+<span id="LC1910" class="line" lang="haskell"> <span class="n" style="color: #333;">checkInferredVars</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">pred_ty</span></span>
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1911
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<pre style="margin: 0;">+<span id="LC1911" class="line" lang="haskell"> <span class="n" style="color: #333;">ret</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">pred_ty'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">pred_ty</span></span>
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1912
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<pre style="margin: 0;"> <span id="LC1912" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Check if there are any nested `forall`s, which are illegal in a</span></span>
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1846
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1913
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<pre style="margin: 0;"> <span id="LC1913" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- `deriving` clause.</span></span>
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1847
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1914
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<pre style="margin: 0;"> <span id="LC1914" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [No nested foralls or contexts in instance types]</span></span>
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1848
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1915
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<pre style="margin: 0;"> <span id="LC1915" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (Wrinkle: Derived instances) in GHC.Hs.Type.</span></span>
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1849
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<pre style="margin: 0;">-<span id="LC1849" class="line" lang="haskell"> <span class="n" style="color: #333;">whenIsJust</span> <span class="p">(</span><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span></span>
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1850
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<pre style="margin: 0;">-<span id="LC1850" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Derived class type"</span><span class="p">)</span></span>
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1851
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<pre style="margin: 0;">-<span id="LC1851" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">getLHsInstDeclHead</span> <span class="n" style="color: #333;">pred_ty'</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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1852
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<pre style="margin: 0;">-<span id="LC1852" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">err_msg</span></span>
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1916
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<pre style="margin: 0;">+<span id="LC1916" class="line" lang="haskell"> <span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">doc</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Derived class type"</span><span class="p">)</span></span>
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1917
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<pre style="margin: 0;">+<span id="LC1917" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">getLHsInstDeclHead</span> <span class="n" style="color: #333;">pred_ty'</span><span class="p">)</span></span>
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1918
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<pre style="margin: 0;"> <span id="LC1918" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">ret</span></span>
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1854
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1919
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<pre style="margin: 0;"> <span id="LC1919" class="line" lang="haskell"></span>
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1855
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1920
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<pre style="margin: 0;"> <span id="LC1920" class="line" lang="haskell"><span class="n" style="color: #333;">rnLDerivStrategy</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1883" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1948" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1883,7 +1948,8 @@ rnLDerivStrategy doc mds thing_inside</td>
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1883
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1948
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<pre style="margin: 0;"> <span id="LC1948" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">AnyclassStrategy</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">boring_case</span> <span class="kt" style="color: #458; font-weight: 600;">AnyclassStrategy</span></span>
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1884
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1949
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<pre style="margin: 0;"> <span id="LC1949" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NewtypeStrategy</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">boring_case</span> <span class="kt" style="color: #458; font-weight: 600;">NewtypeStrategy</span></span>
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1885
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1950
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<pre style="margin: 0;"> <span id="LC1950" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ViaStrategy</span> <span class="n" style="color: #333;">via_ty</span> <span class="o" style="font-weight: 600;">-></span></span>
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1886
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<pre style="margin: 0;">-<span id="LC1886" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">(</span><span class="n" style="color: #333;">via_ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">via_ty</span></span>
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1951
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<pre style="margin: 0;">+<span id="LC1951" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">checkInferredVars</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">inf_err</span> <span class="n" style="color: #333;">via_ty</span></span>
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<pre style="margin: 0;">+<span id="LC1952" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">via_ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">doc</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">via_ty</span></span>
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1887
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1953
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<pre style="margin: 0;"> <span id="LC1953" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">via_imp_tvs</span></span>
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1888
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1954
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<pre style="margin: 0;"> <span id="LC1954" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">via_body</span> <span class="p">}</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">via_ty'</span></span>
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1889
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1955
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<pre style="margin: 0;"> <span id="LC1955" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">via_exp_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">via_rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitLHsForAllTyInvis_KP</span> <span class="n" style="color: #333;">via_body</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1893" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1959" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1893,10 +1959,8 @@ rnLDerivStrategy doc mds thing_inside</td>
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1893
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1959
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<pre style="margin: 0;"> <span id="LC1959" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- `via` type.</span></span>
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1894
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1960
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<pre style="margin: 0;"> <span id="LC1960" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [No nested foralls or contexts in instance types]</span></span>
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1895
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1961
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<pre style="margin: 0;"> <span id="LC1961" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (Wrinkle: Derived instances) in GHC.Hs.Type.</span></span>
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1896
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<td class="diff-line-num new_line old" data-linenumber="1962" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1896" class="line" lang="haskell"> <span class="n" style="color: #333;">whenIsJust</span> <span class="p">(</span><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span></span>
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1897
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<td class="diff-line-num new_line old" data-linenumber="1962" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1897" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"via"</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"type"</span><span class="p">)</span></span>
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1898
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<td class="diff-line-num new_line old" data-linenumber="1962" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1898" class="line" lang="haskell"> <span class="n" style="color: #333;">via_rho</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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1899
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<td class="diff-line-num new_line old" data-linenumber="1962" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1899" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">doc</span> <span class="n" style="color: #333;">err_msg</span></span>
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1962
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<pre style="margin: 0;">+<span id="LC1962" class="line" lang="haskell"> <span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">doc</span></span>
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1963
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<pre style="margin: 0;">+<span id="LC1963" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"via"</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"type"</span><span class="p">)</span> <span class="n" style="color: #333;">via_rho</span></span>
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1900
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1964
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<pre style="margin: 0;"> <span id="LC1964" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">thing</span><span class="p">,</span> <span class="n" style="color: #333;">fvs2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">extendTyVarEnvFVRn</span> <span class="n" style="color: #333;">via_tvs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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1901
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1965
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<pre style="margin: 0;"> <span id="LC1965" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ViaStrategy</span> <span class="n" style="color: #333;">via_ty'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">,</span> <span class="n" style="color: #333;">fvs1</span> <span class="p">`</span><span class="n" style="color: #333;">plusFV</span><span class="p">`</span> <span class="n" style="color: #333;">fvs2</span><span class="p">)</span></span>
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1902
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1966
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<pre style="margin: 0;"> <span id="LC1966" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1947" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2011" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1947,7 +2011,7 @@ rnFamDecl mb_cls (FamilyDecl { fdLName = tycon, fdTyVars = tyvars</td>
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1947
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2011
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<pre style="margin: 0;"> <span id="LC2011" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">injectivity'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">traverse</span> <span class="p">(</span><span class="n" style="color: #333;">rnInjectivityAnn</span> <span class="n" style="color: #333;">tyvars'</span> <span class="n" style="color: #333;">res_sig'</span><span class="p">)</span></span>
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1948
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2012
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<pre style="margin: 0;"> <span id="LC2012" class="line" lang="haskell"> <span class="n" style="color: #333;">injectivity</span></span>
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1949
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2013
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<pre style="margin: 0;"> <span id="LC2013" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="p">(</span><span class="n" style="color: #333;">tyvars'</span><span class="p">,</span> <span class="n" style="color: #333;">res_sig'</span><span class="p">,</span> <span class="n" style="color: #333;">injectivity'</span><span class="p">)</span> <span class="p">,</span> <span class="n" style="color: #333;">fv_kind</span> <span class="p">)</span> <span class="p">}</span></span>
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1950
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<pre style="margin: 0;">-<span id="LC1950" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">info'</span><span class="p">,</span> <span class="n" style="color: #333;">fv2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rn_info</span> <span class="n" style="color: #333;"><span class="idiff left">tycon'</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">info</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1951" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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2014
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<pre style="margin: 0;">+<span id="LC2014" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">info'</span><span class="p">,</span> <span class="n" style="color: #333;">fv2</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rn_info</span> <span class="n" style="color: #333;">info</span></span>
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1951
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2015
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<pre style="margin: 0;"> <span id="LC2015" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamilyDecl</span> <span class="p">{</span> <span class="n" style="color: #333;">fdExt</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noExtField</span></span>
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<td class="diff-line-num old_line" data-linenumber="1952" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1952
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2016
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<pre style="margin: 0;"> <span id="LC2016" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fdLName</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tycon'</span><span class="p">,</span> <span class="n" style="color: #333;">fdTyVars</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tyvars'</span></span>
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1953
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2017
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<pre style="margin: 0;"> <span id="LC2017" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">fdFixity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fixity</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1959" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2023" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1959,18 +2023,16 @@ rnFamDecl mb_cls (FamilyDecl { fdLName = tycon, fdTyVars = tyvars</td>
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1959
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2023
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<pre style="margin: 0;"> <span id="LC2023" class="line" lang="haskell"> <span class="n" style="color: #333;">kvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extractRdrKindSigVars</span> <span class="n" style="color: #333;">res_sig</span></span>
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1960
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2024
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<pre style="margin: 0;"> <span id="LC2024" class="line" lang="haskell"></span>
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1961
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2025
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<pre style="margin: 0;"> <span id="LC2025" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">----------------------</span></span>
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1962
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<pre style="margin: 0;">-<span id="LC1962" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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1963
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<pre style="margin: 0;">-<span id="LC1963" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FamilyInfo</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamilyInfo</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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1964
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<pre style="margin: 0;">-<span id="LC1964" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fam_name</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">eqns</span><span class="p">))</span></span>
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2026
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<pre style="margin: 0;">+<span id="LC2026" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FamilyInfo</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamilyInfo</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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2027
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<pre style="margin: 0;">+<span id="LC2027" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">eqns</span><span class="p">))</span></span>
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1965
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<td class="diff-line-num new_line" data-linenumber="2028" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2028
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<pre style="margin: 0;"> <span id="LC2028" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">eqns'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span></span>
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1966
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<pre style="margin: 0;">-<span id="LC1966" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnList</span> <span class="p">(</span><span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NonAssocTyFamEqn</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ClosedTyFam</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tycon</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fam_name</span></span><span class="p"><span class="idiff right">))</span></span></span>
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2029
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<pre style="margin: 0;">+<span id="LC2029" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnList</span> <span class="p">(</span><span class="n" style="color: #333;">rnTyFamInstEqn</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NonAssocTyFamEqn</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">ClosedTyFam</span></span><span class="p"><span class="idiff">))</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">eqns</span></span></span>
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1967
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<td class="diff-line-num new_line" data-linenumber="2030" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2030
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<pre style="margin: 0;"> <span id="LC2030" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- no class context</span></span>
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1968
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<pre style="margin: 0;">-<span id="LC1968" class="line" lang="haskell"> <span class="n" style="color: #333;">eqns</span></span>
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1969
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2031
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<pre style="margin: 0;"> <span id="LC2031" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">eqns'</span><span class="p">),</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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1970
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<pre style="margin: 0;">-<span id="LC1970" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span></span>
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<td class="diff-line-num new old_line" data-linenumber="1971" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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2032
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<pre style="margin: 0;">+<span id="LC2032" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span></span>
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1971
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<td class="diff-line-num new_line" data-linenumber="2033" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2033
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<pre style="margin: 0;"> <span id="LC2033" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ClosedTypeFamily</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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1972
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<td class="diff-line-num new_line old" data-linenumber="2034" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC1972" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamily</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamily</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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1973
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<pre style="margin: 0;">-<span id="LC1973" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">_</span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">DataFamily</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataFamily</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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2034
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<pre style="margin: 0;">+<span id="LC2034" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamily</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OpenTypeFamily</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="2035" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
2035
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<pre style="margin: 0;">+<span id="LC2035" class="line" lang="haskell"> <span class="n" style="color: #333;">rn_info</span> <span class="kt" style="color: #458; font-weight: 600;">DataFamily</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DataFamily</span><span class="p">,</span> <span class="n" style="color: #333;">emptyFVs</span><span class="p">)</span></span>
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1974
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2036
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<pre style="margin: 0;"> <span id="LC2036" class="line" lang="haskell"></span>
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1975
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2037
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<pre style="margin: 0;"> <span id="LC2037" class="line" lang="haskell"><span class="n" style="color: #333;">rnFamResultSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<td class="diff-line-num old_line" data-linenumber="1976" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
1976
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<td class="diff-line-num new_line" data-linenumber="2038" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2038
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<pre style="margin: 0;"> <span id="LC2038" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FamilyResultSig</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2114" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2176" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2114,13 +2176,6 @@ are no data constructors we allow h98_style = True</td>
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2114
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2176
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<pre style="margin: 0;"> <span id="LC2176" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* *</span></span>
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2115
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<td class="diff-line-num new_line" data-linenumber="2177" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2177
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<pre style="margin: 0;"> <span id="LC2177" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">***************************************************** -}</span></span>
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2116
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<td class="diff-line-num new_line" data-linenumber="2178" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
2178
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<pre style="margin: 0;"> <span id="LC2178" class="line" lang="haskell"></span>
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2117
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<td class="diff-line-num new_line old" data-linenumber="2179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC2117" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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2118
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<pre style="margin: 0;">-<span id="LC2118" class="line" lang="haskell"><span class="n" style="color: #333;">wrongTyFamName</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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2119
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<pre style="margin: 0;">-<span id="LC2119" class="line" lang="haskell"><span class="n" style="color: #333;">wrongTyFamName</span> <span class="n" style="color: #333;">fam_tc_name</span> <span class="n" style="color: #333;">eqn_tc_name</span></span>
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2120
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<td class="diff-line-num new_line old" data-linenumber="2179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC2120" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Mismatched type name in type family instance."</span><span class="p">)</span></span>
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2121
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<pre style="margin: 0;">-<span id="LC2121" class="line" lang="haskell"> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Expected:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fam_tc_name</span></span>
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2122
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<td class="diff-line-num new_line old" data-linenumber="2179" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC2122" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">" Actual:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">eqn_tc_name</span> <span class="p">])</span></span>
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2123
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<pre style="margin: 0;">-<span id="LC2123" class="line" lang="haskell"></span>
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2124
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2179
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<pre style="margin: 0;"> <span id="LC2179" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------</span></span>
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2125
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2180
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<pre style="margin: 0;"> <span id="LC2180" class="line" lang="haskell"><span class="n" style="color: #333;">rnConDecls</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LConDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">LConDecl</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">FreeVars</span><span class="p">)</span></span>
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2126
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2181
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<pre style="margin: 0;"> <span id="LC2181" class="line" lang="haskell"><span class="n" style="color: #333;">rnConDecls</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapFvRn</span> <span class="p">(</span><span class="n" style="color: #333;">wrapLocFstM</span> <span class="n" style="color: #333;">rnConDecl</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2268" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2213,7 +2268,7 @@ rnConDecl (XConDecl (ConDeclGADTPrefixPs { con_gp_names = names, con_gp_ty = ty</td>
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2213
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2268
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<pre style="margin: 0;"> <span id="LC2268" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">mb_doc'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnMbLHsDoc</span> <span class="n" style="color: #333;">mb_doc</span></span>
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2214
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2269
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<pre style="margin: 0;"> <span id="LC2269" class="line" lang="haskell"></span>
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2215
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2270
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<pre style="margin: 0;"> <span id="LC2270" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ConDeclCtx</span> <span class="n" style="color: #333;">new_names</span></span>
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2216
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<pre style="margin: 0;">-<span id="LC2216" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">ty</span></span>
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2271
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<pre style="margin: 0;">+<span id="LC2271" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ty'</span><span class="p">,</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rnHsSigType</span> <span class="n" style="color: #333;">ctxt</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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2217
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2272
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<pre style="margin: 0;"> <span id="LC2272" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">linearTypes</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">xopt</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">LinearTypes</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">getDynFlags</span></span>
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2218
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2273
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<pre style="margin: 0;"> <span id="LC2273" class="line" lang="haskell"></span>
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2219
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2274
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<pre style="margin: 0;"> <span id="LC2274" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Now that operator precedence has been resolved, we can split the</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2287" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2232,10 +2287,8 @@ rnConDecl (XConDecl (ConDeclGADTPrefixPs { con_gp_names = names, con_gp_ty = ty</td>
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2232
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2287
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<pre style="margin: 0;"> <span id="LC2287" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Ensure that there are no nested `forall`s or contexts, per</span></span>
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2233
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2288
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<pre style="margin: 0;"> <span id="LC2288" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [GADT abstract syntax] (Wrinkle: No nested foralls or contexts)</span></span>
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2234
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2289
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<pre style="margin: 0;"> <span id="LC2289" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in GHC.Hs.Type.</span></span>
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2235
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<pre style="margin: 0;">-<span id="LC2235" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">whenIsJust</span> <span class="p">(</span><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span></span>
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2236
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<pre style="margin: 0;">-<span id="LC2236" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"GADT constructor type signature"</span><span class="p">)</span></span>
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2237
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<pre style="margin: 0;">-<span id="LC2237" class="line" lang="haskell"> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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2238
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<pre style="margin: 0;">-<span id="LC2238" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">err_msg</span></span>
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2290
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<pre style="margin: 0;">+<span id="LC2290" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">ctxt</span></span>
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<pre style="margin: 0;">+<span id="LC2291" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"GADT constructor type signature"</span><span class="p">)</span> <span class="n" style="color: #333;">res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC2292" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2293" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceRn</span> <span class="s" style="color: #d14;">"rnConDecl (ConDeclGADTPrefixPs)"</span></span>
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2294
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<pre style="margin: 0;"> <span id="LC2294" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">names</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">implicit_tkvs</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">explicit_tkvs</span><span class="p">)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2273,41 +2326,6 @@ rnConDeclDetails con doc (RecCon (L l fields))</td>
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2273
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2326
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<pre style="margin: 0;"> <span id="LC2326" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- since that is done by GHC.Rename.Names.extendGlobalRdrEnvRn</span></span>
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2274
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2327
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<pre style="margin: 0;"> <span id="LC2327" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RecCon</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">new_fields</span><span class="p">),</span> <span class="n" style="color: #333;">fvs</span><span class="p">)</span> <span class="p">}</span></span>
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2328
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<pre style="margin: 0;"> <span id="LC2328" class="line" lang="haskell"></span>
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2276
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<pre style="margin: 0;">-<span id="LC2276" class="line" lang="haskell"><span class="cd">-- | Examines a non-outermost type for @forall@s or contexts, which are assumed</span></span>
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2277
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<pre style="margin: 0;">-<span id="LC2277" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to be nested. Returns @'Just' err_msg@ if such a @forall@ or context is</span></span>
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2278
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<pre style="margin: 0;">-<span id="LC2278" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- found, and returns @Nothing@ otherwise.</span></span>
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<pre style="margin: 0;">-<span id="LC2279" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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2280
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<pre style="margin: 0;">-<span id="LC2280" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This is currently used in two places:</span></span>
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2281
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<pre style="margin: 0;">-<span id="LC2281" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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2282
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<pre style="margin: 0;">-<span id="LC2282" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * In GADT constructor types (in 'rnConDecl').</span></span>
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2283
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<pre style="margin: 0;">-<span id="LC2283" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See @Note [GADT abstract syntax] (Wrinkle: No nested foralls or contexts)@</span></span>
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2284
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<pre style="margin: 0;">-<span id="LC2284" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- in "GHC.Hs.Type".</span></span>
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2285
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<pre style="margin: 0;">-<span id="LC2285" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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2286
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<pre style="margin: 0;">-<span id="LC2286" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * In instance declaration types (in 'rnClsIntDecl' and 'rnSrcDerivDecl').</span></span>
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2287
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<pre style="margin: 0;">-<span id="LC2287" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See @Note [No nested foralls or contexts in instance types]@ in</span></span>
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<pre style="margin: 0;">-<span id="LC2288" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- "GHC.Hs.Type".</span></span>
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<pre style="margin: 0;">-<span id="LC2289" class="line" lang="haskell"><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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2290
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<pre style="margin: 0;">-<span id="LC2290" class="line" lang="haskell"><span class="n" style="color: #333;">no_nested_foralls_contexts_err</span> <span class="n" style="color: #333;">what</span> <span class="n" style="color: #333;">lty</span> <span class="o" style="font-weight: 600;">=</span></span>
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2291
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<pre style="margin: 0;">-<span id="LC2291" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ignoreParens</span> <span class="n" style="color: #333;">lty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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2292
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<pre style="margin: 0;">-<span id="LC2292" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsForAllTy</span> <span class="p">{</span> <span class="n" style="color: #333;">hst_tele</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tele</span> <span class="p">})</span></span>
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2293
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<pre style="margin: 0;">-<span id="LC2293" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllVis</span><span class="p">{}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tele</span></span>
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2294
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<pre style="margin: 0;">-<span id="LC2294" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The only two places where this function is called correspond to</span></span>
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2295
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<pre style="margin: 0;">-<span id="LC2295" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- types of terms, so we give a slightly more descriptive error</span></span>
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2296
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<pre style="margin: 0;">-<span id="LC2296" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- message in the event that they contain visible dependent</span></span>
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2297
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<pre style="margin: 0;">-<span id="LC2297" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- quantification (currently only allowed in kinds).</span></span>
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2298
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<pre style="margin: 0;">-<span id="LC2298" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Illegal visible, dependent quantification"</span> <span class="o" style="font-weight: 600;"><+></span></span>
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2299
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<pre style="margin: 0;">-<span id="LC2299" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"in the type of a term"</span></span>
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2300
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<pre style="margin: 0;">-<span id="LC2300" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"(GHC does not yet support this)"</span> <span class="p">])</span></span>
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2301
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<pre style="margin: 0;">-<span id="LC2301" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllInvis</span><span class="p">{}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tele</span></span>
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2302
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<pre style="margin: 0;">-<span id="LC2302" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">nested_foralls_contexts_err</span><span class="p">)</span></span>
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2303
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<pre style="margin: 0;">-<span id="LC2303" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsQualTy</span> <span class="p">{})</span></span>
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2304
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<pre style="margin: 0;">-<span id="LC2304" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">nested_foralls_contexts_err</span><span class="p">)</span></span>
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2305
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<pre style="margin: 0;">-<span id="LC2305" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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2306
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<pre style="margin: 0;">-<span id="LC2306" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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2307
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<pre style="margin: 0;">-<span id="LC2307" class="line" lang="haskell"> <span class="n" style="color: #333;">nested_foralls_contexts_err</span> <span class="o" style="font-weight: 600;">=</span></span>
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2308
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<td class="diff-line-num new_line old" data-linenumber="2329" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC2308" class="line" lang="haskell"> <span class="n" style="color: #333;">what</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"cannot contain nested"</span></span>
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2309
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<pre style="margin: 0;">-<span id="LC2309" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="n" style="color: #333;">forAllLit</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"s or contexts"</span></span>
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2310
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<pre style="margin: 0;">-<span id="LC2310" class="line" lang="haskell"></span>
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2311
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2329
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<pre style="margin: 0;"> <span id="LC2329" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-------------------------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC2330" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2331" class="line" lang="haskell"><span class="cd">-- | Brings pattern synonym names and also pattern synonym selectors</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#cfa41b5649933e5b12f7796e9d49b9dd6a0bc59f"><strong>compiler/GHC/Rename/Pat.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -236,19 +236,30 @@ newPatName (LetMk is_top fix_env) rdr_name</td>
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<pre style="margin: 0;"> <span id="LC236" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">is_top</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NotTopLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newLocalBndrRn</span> <span class="n" style="color: #333;">rdr_name</span></span>
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TopLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newTopSrcBinder</span> <span class="n" style="color: #333;">rdr_name</span></span>
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<pre style="margin: 0;">-<span id="LC239" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">bindLocalNames</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span> <span class="c1" style="color: #998; font-style: italic;">-- Do *not* use bindLocalNameFV here</span></span>
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<pre style="margin: 0;">-<span id="LC240" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [View pattern usage]</span></span>
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">bindLocalNames</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC240" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Do *not* use bindLocalNameFV here;</span></span>
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- see Note [View pattern usage]</span></span>
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For the TopLevel case</span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- see Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;"> <span id="LC244" class="line" lang="haskell"> <span class="n" style="color: #333;">addLocalFixities</span> <span class="n" style="color: #333;">fix_env</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC245" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">name</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC246" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC244" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note: the bindLocalNames is somewhat suspicious</span></span>
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<pre style="margin: 0;">-<span id="LC245" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- because it binds a top-level name as a local name.</span></span>
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<pre style="margin: 0;">-<span id="LC246" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- however, this binding seems to work, and it only exists for</span></span>
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<pre style="margin: 0;">-<span id="LC247" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the duration of the patterns and the continuation;</span></span>
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<pre style="margin: 0;">-<span id="LC248" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- then the top-level name is added to the global env</span></span>
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<pre style="margin: 0;">-<span id="LC249" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- before going on to the RHSes (see GHC.Rename.Module).</span></span>
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<pre style="margin: 0;">+<span id="LC247" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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249
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">In the TopLevel case, the use of bindLocalNames here is somewhat</span></span>
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250
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">suspicious because it binds a top-level External name in the</span></span>
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251
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<pre style="margin: 0;">+<span id="LC251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">LocalRdrEnv. c.f. Note [LocalRdrEnv] in GHC.Types.Name.Reader.</span></span>
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252
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<pre style="margin: 0;">+<span id="LC252" class="line" lang="haskell"></span>
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253
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<pre style="margin: 0;">+<span id="LC253" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">However, this only happens when renaming the LHS (only) of a top-level</span></span>
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254
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<pre style="margin: 0;">+<span id="LC254" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">pattern binding. Even though this only the LHS, we need to bring the</span></span>
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<pre style="margin: 0;">+<span id="LC255" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">binder into scope in the pattern itself in case the binder is used in</span></span>
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256
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<pre style="margin: 0;">+<span id="LC256" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">subsequent view patterns. A bit bizarre, something like</span></span>
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<pre style="margin: 0;">+<span id="LC257" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (x, Just y <- f x) = e</span></span>
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<pre style="margin: 0;">+<span id="LC258" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC259" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Anyway, bindLocalNames does work, and the binding only exists for the</span></span>
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<pre style="margin: 0;">+<span id="LC260" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">duration of the pattern; then the top-level name is added to the</span></span>
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<pre style="margin: 0;">+<span id="LC261" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">global env before going on to the RHSes (see GHC.Rename.Module).</span></span>
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<pre style="margin: 0;"> <span id="LC262" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC263" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [View pattern usage]</span></span>
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<pre style="margin: 0;"> <span id="LC264" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC265" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Consider</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -412,7 +423,7 @@ rnPatAndThen mk (SigPat x pat sig)</td>
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412
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<pre style="margin: 0;"> <span id="LC423" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SigPat</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">pat'</span> <span class="n" style="color: #333;">sig'</span> <span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC424" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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414
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<pre style="margin: 0;"> <span id="LC425" class="line" lang="haskell"> <span class="n" style="color: #333;">rnHsPatSigTypeAndThen</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CpsRn</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC415" class="line" lang="haskell"> <span class="n" style="color: #333;">rnHsPatSigTypeAndThen</span> <span class="n" style="color: #333;">sig</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CpsRn</span> <span class="p">(</span><span class="n" style="color: #333;">rnHsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">AlwaysBind</span> <span class="kt" style="color: #458; font-weight: 600;">PatCtx</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nothing</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">sig</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC426" class="line" lang="haskell"> <span class="n" style="color: #333;">rnHsPatSigTypeAndThen</span> <span class="n" style="color: #333;">sig</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">CpsRn</span> <span class="p">(</span><span class="n" style="color: #333;">rnHsPatSigType</span> <span class="kt" style="color: #458; font-weight: 600;">AlwaysBind</span> <span class="kt" style="color: #458; font-weight: 600;">PatCtx</span> <span class="n" style="color: #333;">sig</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC427" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC428" class="line" lang="haskell"><span class="n" style="color: #333;">rnPatAndThen</span> <span class="n" style="color: #333;">mk</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LitPat</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">lit</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC429" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsString</span> <span class="n" style="color: #333;">src</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lit</span></span>
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<li id="939d24c1002dc322659c1f67c9f3d2db2ae31dd4">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#939d24c1002dc322659c1f67c9f3d2db2ae31dd4"><strong>compiler/GHC/Rename/Utils.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -26,8 +26,10 @@ module GHC.Rename.Utils (</td>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindLocalNames</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindLocalNamesFV</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC29" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">addNameClashErrRn</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyVarEnvFVRn</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">addNameClashErrRn</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendTyVarEnvFVRn</span><span class="p"><span class="idiff left right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">checkInferredVars</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">noNestedForallsContextsErr</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addNoNestedForallsContextsErr</span></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">where</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -35,6 +37,7 @@ where</td>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Hs</span></span>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name.Reader</span></span>
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40
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43
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Types</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -49,6 +52,7 @@ import GHC.Utils.Outputable</td>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Basic</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">TopLevelFlag</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>
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54
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.List.SetOps</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">removeDups</span> <span class="p">)</span></span>
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55
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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">whenIsJust</span> <span class="p">)</span></span>
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52
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.FastString</span></span>
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54
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58
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -176,6 +180,136 @@ checkShadowedOccs (global_env,local_env) get_loc_occ ns</td>
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176
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">xopt</span> <span class="kt" style="color: #458; font-weight: 600;">LangExt</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">RecordWildCards</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"> <span class="n" style="color: #333;">is_shadowed_gre</span> <span class="n" style="color: #333;">_other</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;"> <span id="LC182" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC183" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC184" class="line" lang="haskell"><span class="cd">-- | Throw an error message if a user attempts to quantify an inferred type</span></span>
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<pre style="margin: 0;">+<span id="LC185" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- variable in a place where specificity cannot be observed. For example,</span></span>
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<pre style="margin: 0;">+<span id="LC186" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @forall {a}. [a] -> [a]@ would be rejected to the inferred type variable</span></span>
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<pre style="margin: 0;">+<span id="LC187" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @{a}@, but @forall a. [a] -> [a]@ would be accepted.</span></span>
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<pre style="margin: 0;">+<span id="LC188" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See @Note [Unobservably inferred type variables]@.</span></span>
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<pre style="margin: 0;">+<span id="LC189" class="line" lang="haskell"><span class="n" style="color: #333;">checkInferredVars</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span></span>
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<pre style="margin: 0;">+<span id="LC190" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ^ The error msg if the signature is not allowed to contain</span></span>
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<pre style="margin: 0;">+<span id="LC192" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- manually written inferred variables.</span></span>
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<pre style="margin: 0;">+<span id="LC193" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span></span>
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194
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<pre style="margin: 0;">+<span id="LC194" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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195
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<pre style="margin: 0;">+<span id="LC195" class="line" lang="haskell"><span class="n" style="color: #333;">checkInferredVars</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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196
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<pre style="margin: 0;">+<span id="LC196" class="line" lang="haskell"><span class="n" style="color: #333;">checkInferredVars</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">msg</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;">=</span></span>
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197
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<pre style="margin: 0;">+<span id="LC197" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="p">(</span><span class="n" style="color: #333;">hsSigType</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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198
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<pre style="margin: 0;">+<span id="LC198" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">find</span> <span class="p">((</span><span class="o" style="font-weight: 600;">==</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">InferredSpec</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">hsTyVarBndrFlag</span><span class="p">)</span> <span class="n" style="color: #333;">bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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199
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<pre style="margin: 0;">+<span id="LC199" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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200
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addErr</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">msg</span></span>
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201
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<pre style="margin: 0;">+<span id="LC201" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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202
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<pre style="margin: 0;">+<span id="LC202" class="line" lang="haskell"> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsTyVarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">Specificity</span> <span class="kt" style="color: #458; font-weight: 600;">GhcPs</span><span class="p">]</span></span>
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203
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<pre style="margin: 0;">+<span id="LC203" class="line" lang="haskell"> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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204
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<pre style="margin: 0;">+<span id="LC204" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsParTy</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ty'</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">forallty_bndrs</span> <span class="n" style="color: #333;">ty'</span></span>
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205
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<pre style="margin: 0;">+<span id="LC205" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsForAllTy</span> <span class="p">{</span> <span class="n" style="color: #333;">hst_tele</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllInvis</span> <span class="p">{</span> <span class="n" style="color: #333;">hsf_invis_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tvs</span> <span class="p">}}</span></span>
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206
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<pre style="margin: 0;">+<span id="LC206" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">unLoc</span> <span class="n" style="color: #333;">tvs</span></span>
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207
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<pre style="margin: 0;">+<span id="LC207" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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208
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell"></span>
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209
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<pre style="margin: 0;">+<span id="LC209" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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210
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<pre style="margin: 0;">+<span id="LC210" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Unobservably inferred type variables]</span></span>
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211
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<pre style="margin: 0;">+<span id="LC211" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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212
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<pre style="margin: 0;">+<span id="LC212" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">While GHC's parser allows the use of inferred type variables</span></span>
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<pre style="margin: 0;">+<span id="LC213" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">(e.g., `forall {a}. <...>`) just about anywhere that type variable binders can</span></span>
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<pre style="margin: 0;">+<span id="LC214" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">appear, there are some situations where the distinction between inferred and</span></span>
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<pre style="margin: 0;">+<span id="LC215" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">specified type variables cannot be observed. For example, consider this</span></span>
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<pre style="margin: 0;">+<span id="LC216" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">instance declaration:</span></span>
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<pre style="margin: 0;">+<span id="LC217" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> instance forall {a}. Eq (T a) where ...</span></span>
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<pre style="margin: 0;">+<span id="LC219" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC220" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Making {a} inferred is pointless, as there is no way for user code to</span></span>
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<pre style="margin: 0;">+<span id="LC221" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">"apply" an instance declaration in a way where the inferred/specified</span></span>
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<pre style="margin: 0;">+<span id="LC222" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">distinction would make a difference. (Notably, there is no opportunity</span></span>
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<pre style="margin: 0;">+<span id="LC223" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">for visible type application of an instance declaration.) Anyone who</span></span>
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<pre style="margin: 0;">+<span id="LC224" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">writes such code is likely confused, so in an attempt to be helpful,</span></span>
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<pre style="margin: 0;">+<span id="LC225" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we emit an error message if a user writes code like this. The</span></span>
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<pre style="margin: 0;">+<span id="LC226" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">checkInferredVars function is responsible for implementing this</span></span>
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<pre style="margin: 0;">+<span id="LC227" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">restriction.</span></span>
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<pre style="margin: 0;">+<span id="LC228" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC229" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">It turns out to be somewhat cumbersome to enforce this restriction in</span></span>
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<pre style="margin: 0;">+<span id="LC230" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">certain cases. Specifically:</span></span>
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<pre style="margin: 0;">+<span id="LC231" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC232" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* Quantified constraints. In the type `f :: (forall {a}. C a) => Proxy Int`,</span></span>
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<pre style="margin: 0;">+<span id="LC233" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> there is no way to observe that {a} is inferred. Nevertheless, actually</span></span>
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<pre style="margin: 0;">+<span id="LC234" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> rejecting this code would be tricky, as we would need to reject</span></span>
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<pre style="margin: 0;">+<span id="LC235" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> `forall {a}. <...>` as a constraint but *accept* other uses of</span></span>
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<pre style="margin: 0;">+<span id="LC236" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> `forall {a}. <...>` as a type (e.g., `g :: (forall {a}. a -> a) -> b -> b`).</span></span>
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<pre style="margin: 0;">+<span id="LC237" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> This is quite tedious to do in practice, so we don't bother.</span></span>
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<pre style="margin: 0;">+<span id="LC238" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* Default method type signatures (#18432). These are tricky because inferred</span></span>
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<pre style="margin: 0;">+<span id="LC240" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> type variables can appear nested, e.g.,</span></span>
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="haskell"></span>
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242
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> class C a where</span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> m :: forall b. a -> b -> forall c. c -> c</span></span>
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<pre style="margin: 0;">+<span id="LC244" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> default m :: forall b. a -> b -> forall {c}. c -> c</span></span>
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245
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<pre style="margin: 0;">+<span id="LC245" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> m _ _ = id</span></span>
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<pre style="margin: 0;">+<span id="LC246" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC247" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Robustly checking for nested, inferred type variables ends up being a pain,</span></span>
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248
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> so we don't try to do this.</span></span>
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">For now, we simply allow inferred quantifiers to be specified here,</span></span>
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<pre style="margin: 0;">+<span id="LC251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">even though doing so is pointless. All we lose is a warning.</span></span>
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<pre style="margin: 0;">+<span id="LC252" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC253" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Aside from the places where we already use checkInferredVars, most of</span></span>
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<pre style="margin: 0;">+<span id="LC254" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the other places where inferred vars don't make sense are in any case</span></span>
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<pre style="margin: 0;">+<span id="LC255" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">already prohibited from having foralls /at all/. For example:</span></span>
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<pre style="margin: 0;">+<span id="LC256" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC257" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> instance forall a. forall {b}. Eq (Either a b) where ...</span></span>
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<pre style="margin: 0;">+<span id="LC258" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC259" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Here the nested `forall {b}` is already prohibited. (See</span></span>
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260
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<pre style="margin: 0;">+<span id="LC260" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [No nested foralls or contexts in instance types] in GHC.Hs.Type).</span></span>
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261
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<pre style="margin: 0;">+<span id="LC261" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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262
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<pre style="margin: 0;">+<span id="LC262" class="line" lang="haskell"></span>
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263
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<pre style="margin: 0;">+<span id="LC263" class="line" lang="haskell"><span class="cd">-- | Examines a non-outermost type for @forall@s or contexts, which are assumed</span></span>
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264
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<pre style="margin: 0;">+<span id="LC264" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to be nested. For example, in the following declaration:</span></span>
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265
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<pre style="margin: 0;">+<span id="LC265" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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266
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<pre style="margin: 0;">+<span id="LC266" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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267
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<pre style="margin: 0;">+<span id="LC267" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- instance forall a. forall b. C (Either a b)</span></span>
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268
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<pre style="margin: 0;">+<span id="LC268" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>
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269
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<pre style="margin: 0;">+<span id="LC269" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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270
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<pre style="margin: 0;">+<span id="LC270" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The outermost @forall a@ is fine, but the nested @forall b@ is not. We</span></span>
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271
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<pre style="margin: 0;">+<span id="LC271" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- invoke 'noNestedForallsContextsErr' on the type @forall b. C (Either a b)@</span></span>
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272
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<pre style="margin: 0;">+<span id="LC272" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- to catch the nested @forall@ and create a suitable error message.</span></span>
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273
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<pre style="margin: 0;">+<span id="LC273" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'noNestedForallsContextsErr' returns @'Just' err_msg@ if such a @forall@ or</span></span>
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274
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<pre style="margin: 0;">+<span id="LC274" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- context is found, and returns @Nothing@ otherwise.</span></span>
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275
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<pre style="margin: 0;">+<span id="LC275" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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276
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<pre style="margin: 0;">+<span id="LC276" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This is currently used in the following places:</span></span>
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277
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<pre style="margin: 0;">+<span id="LC277" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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278
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<pre style="margin: 0;">+<span id="LC278" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * In GADT constructor types (in 'rnConDecl').</span></span>
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<td class="diff-line-num new new_line" data-linenumber="279" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
279
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<pre style="margin: 0;">+<span id="LC279" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See @Note [GADT abstract syntax] (Wrinkle: No nested foralls or contexts)@</span></span>
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280
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<pre style="margin: 0;">+<span id="LC280" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- in "GHC.Hs.Type".</span></span>
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281
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<pre style="margin: 0;">+<span id="LC281" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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282
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<pre style="margin: 0;">+<span id="LC282" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * In instance declaration types (in 'rnClsIntDecl' and 'rnSrcDerivDecl' in</span></span>
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<td class="diff-line-num new new_line" data-linenumber="283" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
283
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<pre style="margin: 0;">+<span id="LC283" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- "GHC.Rename.Module" and 'renameSig' in "GHC.Rename.Bind").</span></span>
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<td class="diff-line-num new new_line" data-linenumber="284" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
284
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<pre style="margin: 0;">+<span id="LC284" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See @Note [No nested foralls or contexts in instance types]@ in</span></span>
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285
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<pre style="margin: 0;">+<span id="LC285" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- "GHC.Hs.Type".</span></span>
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286
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<pre style="margin: 0;">+<span id="LC286" class="line" lang="haskell"><span class="n" style="color: #333;">noNestedForallsContextsErr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SrcSpan</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span></span>
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287
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<pre style="margin: 0;">+<span id="LC287" class="line" lang="haskell"><span class="n" style="color: #333;">noNestedForallsContextsErr</span> <span class="n" style="color: #333;">what</span> <span class="n" style="color: #333;">lty</span> <span class="o" style="font-weight: 600;">=</span></span>
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288
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<pre style="margin: 0;">+<span id="LC288" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">ignoreParens</span> <span class="n" style="color: #333;">lty</span> <span class="kr" style="font-weight: 600;">of</span></span>
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289
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<pre style="margin: 0;">+<span id="LC289" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsForAllTy</span> <span class="p">{</span> <span class="n" style="color: #333;">hst_tele</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tele</span> <span class="p">})</span></span>
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290
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<pre style="margin: 0;">+<span id="LC290" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllVis</span><span class="p">{}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tele</span></span>
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291
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<pre style="margin: 0;">+<span id="LC291" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The only two places where this function is called correspond to</span></span>
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292
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<pre style="margin: 0;">+<span id="LC292" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- types of terms, so we give a slightly more descriptive error</span></span>
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293
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<pre style="margin: 0;">+<span id="LC293" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- message in the event that they contain visible dependent</span></span>
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294
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<pre style="margin: 0;">+<span id="LC294" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- quantification (currently only allowed in kinds).</span></span>
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295
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<pre style="margin: 0;">+<span id="LC295" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Illegal visible, dependent quantification"</span> <span class="o" style="font-weight: 600;"><+></span></span>
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296
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<pre style="margin: 0;">+<span id="LC296" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"in the type of a term"</span></span>
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297
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<pre style="margin: 0;">+<span id="LC297" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"(GHC does not yet support this)"</span> <span class="p">])</span></span>
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<pre style="margin: 0;">+<span id="LC298" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsForAllInvis</span><span class="p">{}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tele</span></span>
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299
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<pre style="margin: 0;">+<span id="LC299" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">nested_foralls_contexts_err</span><span class="p">)</span></span>
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300
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<pre style="margin: 0;">+<span id="LC300" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">l</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsQualTy</span> <span class="p">{})</span></span>
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301
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<pre style="margin: 0;">+<span id="LC301" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">nested_foralls_contexts_err</span><span class="p">)</span></span>
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302
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<pre style="margin: 0;">+<span id="LC302" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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303
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<pre style="margin: 0;">+<span id="LC303" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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304
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<pre style="margin: 0;">+<span id="LC304" class="line" lang="haskell"> <span class="n" style="color: #333;">nested_foralls_contexts_err</span> <span class="o" style="font-weight: 600;">=</span></span>
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<td class="diff-line-num new new_line" data-linenumber="305" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
305
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<pre style="margin: 0;">+<span id="LC305" class="line" lang="haskell"> <span class="n" style="color: #333;">what</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"cannot contain nested"</span></span>
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306
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<pre style="margin: 0;">+<span id="LC306" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">quotes</span> <span class="n" style="color: #333;">forAllLit</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"s or contexts"</span></span>
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<pre style="margin: 0;">+<span id="LC307" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC308" class="line" lang="haskell"><span class="cd">-- | A common way to invoke 'noNestedForallsContextsErr'.</span></span>
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<pre style="margin: 0;">+<span id="LC309" class="line" lang="haskell"><span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsDocContext</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RnM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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310
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<pre style="margin: 0;">+<span id="LC310" class="line" lang="haskell"><span class="n" style="color: #333;">addNoNestedForallsContextsErr</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">what</span> <span class="n" style="color: #333;">lty</span> <span class="o" style="font-weight: 600;">=</span></span>
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311
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<pre style="margin: 0;">+<span id="LC311" class="line" lang="haskell"> <span class="n" style="color: #333;">whenIsJust</span> <span class="p">(</span><span class="n" style="color: #333;">noNestedForallsContextsErr</span> <span class="n" style="color: #333;">what</span> <span class="n" style="color: #333;">lty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">err_msg</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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312
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<pre style="margin: 0;">+<span id="LC312" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrAt</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withHsDocContext</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">err_msg</span></span>
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179
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313
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<pre style="margin: 0;"> <span id="LC313" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC314" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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181
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<pre style="margin: 0;"> <span id="LC315" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#aebe2c3d616f6843166d2657bed048898add6bc9"><strong>compiler/GHC/Tc/Instance/Class.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -67,8 +67,8 @@ data AssocInstInfo</td>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"><span class="n" style="color: #333;">isNotAssociated</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">AssocInstInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">-<span id="LC70" class="line" lang="haskell"><span class="n" style="color: #333;">isNotAssociated</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NotAssociated</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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71
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<pre style="margin: 0;">-<span id="LC71" class="line" lang="haskell"><span class="n" style="color: #333;">isNotAssociated</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">InClsInst</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="n" style="color: #333;">isNotAssociated</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NotAssociated</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">{})</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"><span class="n" style="color: #333;">isNotAssociated</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">InClsInst</span> <span class="p">{})</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- *******************************************************************</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#83d23a46bb6cdc8b1edc16f1fd2c8f5c53e2c9ca"><strong>compiler/GHC/Tc/TyCl.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2833,8 +2833,17 @@ kcTyFamInstEqn tc_fam_tc</td>
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<pre style="margin: 0;"> <span id="LC2833" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"feqn_pats ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hs_pats</span> <span class="p">])</span></span>
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2834
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<pre style="margin: 0;"> <span id="LC2834" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- this check reports an arity error instead of a kind error; easier for user</span></span>
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2835
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<pre style="margin: 0;"> <span id="LC2835" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">vis_pats</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">numVisibleArgs</span> <span class="n" style="color: #333;">hs_pats</span></span>
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2836
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<pre style="margin: 0;">+<span id="LC2836" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC2837" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- First, check if we're dealing with a closed type family equation, and</span></span>
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<pre style="margin: 0;">+<span id="LC2838" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- if so, ensure that each equation's type constructor is for the right</span></span>
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<pre style="margin: 0;">+<span id="LC2839" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- type family. E.g. barf on</span></span>
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<pre style="margin: 0;">+<span id="LC2840" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- type family F a where { G Int = Bool }</span></span>
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<pre style="margin: 0;">+<span id="LC2841" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">tc_fam_tc_name</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">eqn_tc_name</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC2842" class="line" lang="haskell"> <span class="n" style="color: #333;">wrongTyFamName</span> <span class="n" style="color: #333;">tc_fam_tc_name</span> <span class="n" style="color: #333;">eqn_tc_name</span></span>
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2843
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<pre style="margin: 0;">+<span id="LC2843" class="line" lang="haskell"></span>
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2844
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<pre style="margin: 0;"> <span id="LC2844" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">vis_pats</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">vis_arity</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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2837
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<pre style="margin: 0;"> <span id="LC2845" class="line" lang="haskell"> <span class="n" style="color: #333;">wrongNumberOfParmsErr</span> <span class="n" style="color: #333;">vis_arity</span></span>
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<pre style="margin: 0;">+<span id="LC2846" class="line" lang="haskell"></span>
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2847
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<pre style="margin: 0;"> <span id="LC2847" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">discardResult</span> <span class="o" style="font-weight: 600;">$</span></span>
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2839
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2848
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<pre style="margin: 0;"> <span id="LC2848" class="line" lang="haskell"> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">imp_vars</span> <span class="o" style="font-weight: 600;">$</span></span>
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2849
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<pre style="margin: 0;"> <span id="LC2849" class="line" lang="haskell"> <span class="n" style="color: #333;">bindExplicitTKBndrs_Q_Tv</span> <span class="kt" style="color: #458; font-weight: 600;">AnyKind</span> <span class="p">(</span><span class="n" style="color: #333;">mb_expl_bndrs</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2848,7 +2857,7 @@ kcTyFamInstEqn tc_fam_tc</td>
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<pre style="margin: 0;"> <span id="LC2857" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2858" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC2859" class="line" lang="haskell"> <span class="n" style="color: #333;">vis_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="p">(</span><span class="n" style="color: #333;">tyConVisibleTyVars</span> <span class="n" style="color: #333;">tc_fam_tc</span><span class="p">)</span></span>
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2851
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<pre style="margin: 0;">-<span id="LC2851" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC2860" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_fam_tc_name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">getName</span> <span class="n" style="color: #333;">tc_fam_tc</span></span>
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<pre style="margin: 0;"> <span id="LC2861" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2862" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC2863" class="line" lang="haskell"><span class="n" style="color: #333;">tcTyFamInstEqn</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">AssocInstInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LTyFamInstEqn</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2858,22 +2867,22 @@ tcTyFamInstEqn :: TcTyCon -> AssocInstInfo -> LTyFamInstEqn GhcRn</td>
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<pre style="margin: 0;"> <span id="LC2867" class="line" lang="haskell"></span>
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2868
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<pre style="margin: 0;"> <span id="LC2868" class="line" lang="haskell"><span class="n" style="color: #333;">tcTyFamInstEqn</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">mb_clsinfo</span></span>
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2860
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2869
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<pre style="margin: 0;"> <span id="LC2869" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsIB</span> <span class="p">{</span> <span class="n" style="color: #333;">hsib_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">imp_vars</span></span>
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2861
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<pre style="margin: 0;">-<span id="LC2861" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FamEqn</span> <span class="p">{</span> <span class="n" style="color: #333;">feqn_tycon</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">eqn_tc_name</span></span>
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2862
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<pre style="margin: 0;">-<span id="LC2862" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">feqn_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_expl_bndrs</span></span>
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<pre style="margin: 0;">+<span id="LC2870" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">hsib_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FamEqn</span> <span class="p">{</span> <span class="n" style="color: #333;">feqn_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_expl_bndrs</span></span>
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2871
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<pre style="margin: 0;"> <span id="LC2871" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">feqn_pats</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_pats</span></span>
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<pre style="margin: 0;"> <span id="LC2872" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">feqn_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_rhs_ty</span> <span class="p">}}))</span></span>
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2865
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<pre style="margin: 0;">-<span id="LC2865" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">getName</span> <span class="n" style="color: #333;">fam_tc</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">eqn_tc_name</span> <span class="p">)</span></span>
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2866
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<pre style="margin: 0;">-<span id="LC2866" class="line" lang="haskell"> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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2873
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<pre style="margin: 0;">+<span id="LC2873" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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2867
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2874
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<pre style="margin: 0;"> <span id="LC2874" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcTyFamInstEqn"</span> <span class="o" style="font-weight: 600;">$</span></span>
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2868
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2875
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<pre style="margin: 0;"> <span id="LC2875" class="line" lang="haskell"> <span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fam_tc</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hs_pats</span></span>
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2869
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2876
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<pre style="margin: 0;"> <span id="LC2876" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"fam tc bndrs"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">pprTyVars</span> <span class="p">(</span><span class="n" style="color: #333;">tyConTyVars</span> <span class="n" style="color: #333;">fam_tc</span><span class="p">)</span></span>
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2870
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2877
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<pre style="margin: 0;"> <span id="LC2877" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mb_clsinfo</span> <span class="kr" style="font-weight: 600;">of</span></span>
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2871
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<pre style="margin: 0;">-<span id="LC2871" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NotAssociated</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">empty</span></span>
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2878
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<pre style="margin: 0;">+<span id="LC2878" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NotAssociated</span> <span class="p"><span class="idiff left">{}</span></span><span class="idiff right"> </span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">empty</span></span>
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2879
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<pre style="margin: 0;"> <span id="LC2879" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">InClsInst</span> <span class="p">{</span> <span class="n" style="color: #333;">ai_class</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cls</span> <span class="p">}</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"class"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">cls</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">pprTyVars</span> <span class="p">(</span><span class="n" style="color: #333;">classTyVars</span> <span class="n" style="color: #333;">cls</span><span class="p">)</span> <span class="p">]</span></span>
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2873
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2880
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<pre style="margin: 0;"> <span id="LC2880" class="line" lang="haskell"></span>
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2874
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2881
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<pre style="margin: 0;"> <span id="LC2881" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- First, check the arity of visible arguments</span></span>
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2875
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2882
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<pre style="margin: 0;"> <span id="LC2882" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- If we wait until validity checking, we'll get kind errors</span></span>
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2876
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2883
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<pre style="margin: 0;"> <span id="LC2883" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- below when an arity error will be much easier to understand.</span></span>
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2884
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<pre style="margin: 0;">+<span id="LC2884" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note that for closed type families, kcTyFamInstEqn has already</span></span>
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2885
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<pre style="margin: 0;">+<span id="LC2885" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- checked the arity previously.</span></span>
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2877
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2886
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<pre style="margin: 0;"> <span id="LC2886" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">vis_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="p">(</span><span class="n" style="color: #333;">tyConVisibleTyVars</span> <span class="n" style="color: #333;">fam_tc</span><span class="p">)</span></span>
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2878
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2887
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<pre style="margin: 0;"> <span id="LC2887" class="line" lang="haskell"> <span class="n" style="color: #333;">vis_pats</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">numVisibleArgs</span> <span class="n" style="color: #333;">hs_pats</span></span>
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2879
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2888
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<pre style="margin: 0;"> <span id="LC2888" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkTc</span> <span class="p">(</span><span class="n" style="color: #333;">vis_pats</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">vis_arity</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="4919" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -4919,6 +4928,12 @@ incoherentRoles = (text "Roles other than" <+> quotes (text "nominal") <+></td>
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4919
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4928
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<pre style="margin: 0;"> <span id="LC4928" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"for class parameters can lead to incoherence."</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$$</span></span>
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4920
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4929
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<pre style="margin: 0;"> <span id="LC4929" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Use IncoherentInstances to allow this; bad role found"</span><span class="p">)</span></span>
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4921
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4930
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<pre style="margin: 0;"> <span id="LC4930" class="line" lang="haskell"></span>
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4931
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<pre style="margin: 0;">+<span id="LC4931" class="line" lang="haskell"><span class="n" style="color: #333;">wrongTyFamName</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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4932
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<pre style="margin: 0;">+<span id="LC4932" class="line" lang="haskell"><span class="n" style="color: #333;">wrongTyFamName</span> <span class="n" style="color: #333;">fam_tc_name</span> <span class="n" style="color: #333;">eqn_tc_name</span></span>
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4933
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<pre style="margin: 0;">+<span id="LC4933" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hang</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Mismatched type name in type family instance."</span><span class="p">)</span></span>
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4934
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<pre style="margin: 0;">+<span id="LC4934" class="line" lang="haskell"> <span class="mi" style="color: #099;">2</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Expected:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">fam_tc_name</span></span>
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4935
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<pre style="margin: 0;">+<span id="LC4935" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">" Actual:"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">eqn_tc_name</span> <span class="p">])</span></span>
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4936
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<pre style="margin: 0;">+<span id="LC4936" class="line" lang="haskell"></span>
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4922
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4937
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<pre style="margin: 0;"> <span id="LC4937" class="line" lang="haskell"><span class="n" style="color: #333;">addTyConCtxt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC4938" class="line" lang="haskell"><span class="n" style="color: #333;">addTyConCtxt</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addTyConFlavCtxt</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">flav</span></span>
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<pre style="margin: 0;"> <span id="LC4939" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#03e77c5a7f093768fb8c3be51f8c4ece06b78463"><strong>compiler/GHC/Types/Name/Reader.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -338,13 +338,24 @@ instance Ord RdrName where</td>
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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The LocalRdrEnv is used to store local bindings (let, where, lambda, case).</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* It is keyed by OccName, because we never use it for qualified names.</span></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* It maps the OccName to a Name. That Name is almost always an</span></span>
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<pre style="margin: 0;">+<span id="LC348" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Internal Name, but (hackily) it can be External too for top-level</span></span>
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<pre style="margin: 0;">+<span id="LC349" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> pattern bindings. See Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;">+<span id="LC350" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> in GHC.Rename.Pat</span></span>
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<pre style="margin: 0;">+<span id="LC351" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC352" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* We keep the current mapping (lre_env), *and* the set of all Names in</span></span>
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<pre style="margin: 0;">+<span id="LC353" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> scope (lre_in_scope). Reason: see Note [Splicing Exact names] in</span></span>
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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> GHC.Rename.Env.</span></span>
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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"><span class="cd">-- | Local Reader Environment</span></span>
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<pre style="margin: 0;">-<span id="LC342" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This environment is used to store local bindings</span></span>
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<pre style="margin: 0;">-<span id="LC344" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (@let@, @where@, lambda, @case@).</span></span>
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<pre style="margin: 0;">-<span id="LC345" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- It is keyed by OccName, because we never use it for qualified names</span></span>
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<pre style="margin: 0;">-<span id="LC346" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We keep the current mapping, *and* the set of all Names in scope</span></span>
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<pre style="margin: 0;">-<span id="LC347" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Reason: see Note [Splicing Exact names] in "GHC.Rename.Env"</span></span>
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<pre style="margin: 0;">+<span id="LC358" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">NameSet</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -364,16 +375,15 @@ emptyLocalRdrEnv = LRE { lre_env = emptyOccEnv</td>
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<pre style="margin: 0;"> <span id="LC375" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyNameSet</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC376" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC377" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span></span>
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<pre style="margin: 0;">-<span id="LC367" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">The Name should be a non-top-level thing</span></span></span>
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">See Note [LocalRdrEnv]</span></span></span>
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<pre style="margin: 0;"> <span id="LC379" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnv</span> <span class="n" style="color: #333;">lre</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ns</span> <span class="p">})</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">-<span id="LC369" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">WARN</span><span class="p">(</span> <span class="n" style="color: #333;">isExternalName</span> <span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">name</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC370" class="line" lang="haskell"> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">+<span id="LC380" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendNameSet</span> <span class="n" style="color: #333;">ns</span> <span class="n" style="color: #333;">name</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnvList</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnvList</span> <span class="n" style="color: #333;">lre</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ns</span> <span class="p">})</span> <span class="n" style="color: #333;">names</span></span>
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<pre style="margin: 0;">-<span id="LC375" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">WARN</span><span class="p">(</span> <span class="n" style="color: #333;">any</span> <span class="n" style="color: #333;">isExternalName</span> <span class="n" style="color: #333;">names</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">names</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnvList</span> <span class="n" style="color: #333;">env</span> <span class="p">[(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">n</span><span class="p">,</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">names</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnvList</span> <span class="n" style="color: #333;">env</span> <span class="p">[(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">n</span><span class="p">,</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">names</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendNameSetList</span> <span class="n" style="color: #333;">ns</span> <span class="n" style="color: #333;">names</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"><span class="n" style="color: #333;">lookupLocalRdrEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RdrName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#1f7ad7773f18165c1995cd496c307530800645b1"><strong>testsuite/tests/indexed-types/should_fail/Overlap5.stderr</strong></a>
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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">Overlap5.hs:8:3: error:</span>
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3
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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext"> Mismatched type name in type family instance.</span>
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4
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<pre style="margin: 0;">-<span id="LC4" class="line" lang="plaintext"> Expected: F</span>
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5
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<pre style="margin: 0;">-<span id="LC5" class="line" lang="plaintext"> Actual: G</span>
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6
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">In the declaration for type family</span> ‘F’</span></pre>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> <span class="idiff left right">• </span>Mismatched type name in type family instance.</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> <span class="idiff left right"> </span>Expected: F</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> <span class="idiff left right"> </span>Actual: G</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">• In the type family declaration for</span> ‘F’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#b2bbbaa9afa7dee8f4b5ad5d88a54a403707596c"><strong>testsuite/tests/quantified-constraints/T18432.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE QuantifiedConstraints #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">Bug</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Proxy</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="n" style="color: #333;">a</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Proxy</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">forall</span> <span class="p">{</span><span class="n" style="color: #333;">a</span><span class="p">}</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Proxy</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#f1610e4f96b054482dbf49790fc6c1fa50e45ae2"><strong>testsuite/tests/quantified-constraints/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -29,3 +29,4 @@ test('T17267c', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17267d</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17267e</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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31
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17458</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18432</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#2ae57b8c46961847488f3363ae6f023c39dd9f3a"><strong>testsuite/tests/rename/should_fail/T16002.stderr</strong></a>
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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T16002.hs:6:3: error:</span>
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3
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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext"> Mismatched type name in type family instance.</span>
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4
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<pre style="margin: 0;">-<span id="LC4" class="line" lang="plaintext"> Expected: B</span>
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5
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<pre style="margin: 0;">-<span id="LC5" class="line" lang="plaintext"> Actual: A</span>
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6
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">In the declaration for type family</span> ‘B’</span></pre>
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3
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> <span class="idiff left right">• </span>Mismatched type name in type family instance.</span>
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4
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> <span class="idiff left right"> </span>Expected: B</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> <span class="idiff left right"> </span>Actual: A</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">• In the type family declaration for</span> ‘B’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#06967bf4eda1dcb434bb05e9373aa8fa3a467f22"><strong>testsuite/tests/th/T15362.hs</strong></a>
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<pre style="margin: 0;">-<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TemplateHaskell, TypeOperators, DataKinds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TemplateHaskell, TypeOperators, DataKinds<span class="idiff left right">, TypeFamilies</span> #-}</span></span>
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T15362</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#fdc37038d819f2be8ce66bff83a7928c120c7455"><strong>testsuite/tests/th/T15362.stderr</strong></a>
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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T15362.hs:<span class="idiff left right">8:10</span>: error:</span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T15362.hs:<span class="idiff left right">7:2</span>: error:</span>
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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext"> • Mismatched type name in type family instance.</span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext"> Expected: +</span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext"> Actual: Maybe</span>
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="plaintext"> In the declaration for type family ‘+’</span>
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<pre style="margin: 0;">-<span id="LC7" class="line" lang="plaintext"> • In the Template Haskell quotation</span>
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<pre style="margin: 0;">-<span id="LC8" class="line" lang="plaintext"> [d| type family a + b where</span>
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<pre style="margin: 0;">-<span id="LC9" class="line" lang="plaintext"> Maybe Zero b = b</span>
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<pre style="margin: 0;">-<span id="LC10" class="line" lang="plaintext"> Succ a + b = Succ (a + b) |]</span></pre>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> • In the type family declaration for ‘+’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#f2f8be1d5db1924734332ee9da4296f24c549221"><strong>testsuite/tests/typecheck/should_fail/ExplicitSpecificity4.hs</strong>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#93febbc079ea3983ae2cd6b4e38bd0100fe8cb6a"><strong>testsuite/tests/typecheck/should_compile/T18470.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# OPTIONS_GHC -Wunused-top-binds #-}</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T18470</span> <span class="p">()</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">Closed</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Closed</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#623344f69e3f04970d640d4a311861403c18b94c"><strong>testsuite/tests/typecheck/should_compile/T18470.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T18470.hs:6:1: warning: [-Wunused-top-binds (in -Wextra, -Wunused-binds)]</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> Defined but not used: type constructor or class ‘Closed’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#34fe7bf0e6fbf60effb28393399ba68666593909"><strong>testsuite/tests/typecheck/should_compile/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -712,8 +712,10 @@ test('T18129', expect_broken(18129), compile, [''])</td>
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<pre style="margin: 0;"> <span id="LC712" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18185</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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713
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713
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<pre style="margin: 0;"> <span id="LC713" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificityA1</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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714
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714
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<pre style="margin: 0;"> <span id="LC714" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificityA2</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC715" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity4</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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716
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<pre style="margin: 0;"> <span id="LC716" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17775-viewpats-a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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716
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717
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<pre style="margin: 0;"> <span id="LC717" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17775-viewpats-b</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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717
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718
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<pre style="margin: 0;"> <span id="LC718" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17775-viewpats-c</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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718
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719
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<pre style="margin: 0;"> <span id="LC719" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17775-viewpats-d</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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719
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<pre style="margin: 0;"> <span id="LC720" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18412</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span>
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721
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<pre style="margin: 0;">+<span id="LC721" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18470</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#36df27be7e981d8004e9dc3a6fb728f175e5b374"><strong>testsuite/tests/typecheck/should_fail/T11623.stderr</strong></a>
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1
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1
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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>
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2
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2
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="plaintext">T11623.hs:5:23: error:</span>
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3
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<pre style="margin: 0;">-<span id="LC3" class="line" lang="plaintext"> Mismatched type name in type family instance.</span>
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4
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<pre style="margin: 0;">-<span id="LC4" class="line" lang="plaintext"> Expected: T</span>
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<pre style="margin: 0;">-<span id="LC5" class="line" lang="plaintext"> Actual: Maybe</span>
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<pre style="margin: 0;">-<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">In the declaration for type family</span> ‘T’</span></pre>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> <span class="idiff left right">• </span>Mismatched type name in type family instance.</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> <span class="idiff left right"> </span>Expected: T</span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext"> <span class="idiff left right"> </span>Actual: Maybe</span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="plaintext"> <span class="idiff left right">• In the type family declaration for</span> ‘T’</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#81c6ad9f91d49f90a4af407219e2c58b6b5b8ed0"><strong>testsuite/tests/typecheck/should_fail/T18455.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE RankNTypes #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T18455</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">C</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"> <span class="cp" style="color: #999; font-weight: 600;">{-# SPECIALISE instance forall a. forall b. C (Either a b) #-}</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#6c88bbe3db19f92289b0114b3fd4fd587211bd2c"><strong>testsuite/tests/typecheck/should_fail/T18455.stderr</strong></a>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T18455.hs:7:37: error:</span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext"> SPECIALISE instance type cannot contain nested ‘forall’s or contexts</span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext"> In a SPECIALISE instance pragma</span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/fc451e3bf0b1b1dd466fd373e7b4a30dd69ec769...2545583198d1eda0c21f62ebf704ee113df56bb8#b9e86d897a62509b0114d81d5e736630d6f68f43"><strong>testsuite/tests/typecheck/should_fail/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -568,7 +568,6 @@ test('T18127a', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC568" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity1</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC569" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity2</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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570
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570
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<pre style="margin: 0;"> <span id="LC570" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity3</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">-<span id="LC571" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity4</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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572
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571
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<pre style="margin: 0;"> <span id="LC571" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity5</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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573
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572
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<pre style="margin: 0;"> <span id="LC572" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity6</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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574
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573
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<pre style="margin: 0;"> <span id="LC573" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">ExplicitSpecificity7</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="578" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="577" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -578,3 +577,4 @@ test('ExplicitSpecificity10', normal, compile_fail, [''])</td>
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578
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577
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<pre style="margin: 0;"> <span id="LC577" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18357</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<td class="diff-line-num old_line" data-linenumber="579" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
579
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578
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<pre style="margin: 0;"> <span id="LC578" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18357a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<td class="diff-line-num old_line" data-linenumber="580" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
580
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579
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<pre style="margin: 0;"> <span id="LC579" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18357b</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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580
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<pre style="margin: 0;">+<span id="LC580" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18455</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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