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GitLab

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<h3>

Ben Gamari pushed to branch wip/backports

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/22fe8c6c271376e6a8672c175a066a0c140e0e2b">22fe8c6c</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts: Zero block flags with -DZ

Block flags are very useful for determining the state of a block.

However, some block allocator users don't touch them, leading to

misleading values. Ensure that we zero then when zero-on-gc is set. This

is safe and makes the flags more useful during debugging.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3e605c37e66ffbe4c6f95121ddc953afb616cafa">3e605c37</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Fix incorrect failed_to_evac value during deadlock gc

Previously we would incorrectly set the failed_to_evac flag if we

evacuated a value due to a deadlock GC. This would cause us to mark more

things as dirty than strictly necessary. It also turned up a nasty but

which I will fix next.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5d3ef6bc9bf0b6e1f64553d4ac81b1924d7bfeec">5d3ef6bc</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Fix handling of dirty objects

Previously we (incorrectly) relied on failed_to_evac to be "precise".

That is, we expected it to only be true if *all* of an object's fields

lived outside of the non-moving heap. However, does not match the

behavior of failed_to_evac, which is true if *any* of the object's

fields weren't promoted (meaning that some others *may* live in the

non-moving heap).

This is problematic as we skip the non-moving write barrier for dirty

objects (which we can only safely do if *all* fields point outside of

the non-moving heap).

Clearly this arises due to a fundamental difference in the behavior

expected of failed_to_evac in the moving and non-moving collector.

e.g., in the moving collector it is always safe to conservatively say

failed_to_evac=true whereas in the non-moving collector the safe value

is false.

This issue went unnoticed as I never wrote down the dirtiness

invariant enforced by the non-moving collector. We now define this

invariant as

    An object being marked as dirty implies that all of its fields are

    on the mark queue (or, equivalently, update remembered set).

To maintain this invariant we teach nonmovingScavengeOne to push the

fields of objects which we fail to evacuate to the update remembered

set. This is a simple and reasonably cheap solution and avoids the

complexity and fragility that other, more strict alternative invariants

would require.

All of this is described in a new Note, Note [Dirty flags in the

non-moving collector] in NonMoving.c.

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a22751465ca4761744842eecee8f7a7569165570">a2275146</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Optimise the write barrier

(cherry picked from commit a636eadac1f30bae37aeb6526f94893293f098b8)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7627897182a0960546475f4ed43265deaace88ee">76278971</a></strong>

<div>

<span>by Ömer Sinan Ağacan</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">FastString: fix eager reading of string ptr in hashStr

This read causes NULL dereferencing when len is 0.

Fixes #17909

In the reproducer in #17909 this bug is triggered as follows:

- SimplOpt.dealWithStringLiteral is called with a single-char string

  ("=" in #17909)

- tailFS gets called on the FastString of the single-char string.

- tailFS checks the length of the string, which is 1, and calls

  mkFastStringByteString on the tail of the ByteString, which is an

  empty ByteString as the original ByteString has only one char.

- ByteString's unsafeUseAsCStringLen returns (NULL, 0) for the empty

  ByteString, which is passed to mkFastStringWith.

- mkFastStringWith gets hash of the NULL pointer via hashStr, which

  fails on empty strings because of this bug.

(cherry picked from commit d15b61608a542f6349b42224140b7d227b88ef4e)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f1fcaec7295f35812915a1e0f0bca9e2903edb46">f1fcaec7</a></strong>

<div>

<span>by Simon Peyton Jones</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve error handling for VTA + deferred type errors

This fixes #17792

See Note [VTA for out-of-scope functions] in TcExpr

(cherry picked from commit 335b18bac3c361d243f427b66e67c2c94f5c6494)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/951a778333dcb3843d6f1176ca76f353cf9d3e04">951a7783</a></strong>

<div>

<span>by Simon Peyton Jones</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a missing zonk in tcHsPartialType

I omitted a vital zonk when refactoring tcHsPartialType in

   commit 48fb3482f8cbc8a4b37161021e846105f980eed4

   Author: Simon Peyton Jones <simonpj@microsoft.com>

   Date:   Wed Jun 5 08:55:17 2019 +0100

   Fix typechecking of partial type signatures

This patch fixes it and adds commentary to explain why.

Fixes #18008

(cherry picked from commit 658bda511237593bb80389280d0364180648058d)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6bc44debc4066c9dff71a5eeb0751f3a4d0976a8">6bc44deb</a></strong>

<div>

<span>by Sylvain Henry</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Rts: show errno on failure (#18033)

(cherry picked from commit 4875d419ba066e479f7ac07f8b39ebe10c855859)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5f5e5abc99870501be6501c34439a31b674283e">e5f5e5ab</a></strong>

<div>

<span>by Ryan Scott</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix two ASSERT buglets in reifyDataCon

Two `ASSERT`s in `reifyDataCon` were always using `arg_tys`, but

`arg_tys` is not meaningful for GADT constructors. In fact, it's

worse than non-meaningful, since using `arg_tys` when reifying a

GADT constructor can lead to failed `ASSERT`ions, as #17305

demonstrates.

This patch applies the simplest possible fix to the immediate

problem. The `ASSERT`s now use `r_arg_tys` instead of `arg_tys`, as

the former makes sure to give something meaningful for GADT

constructors. This makes the panic go away at the very least. There

is still an underlying issue with the way the internals of

`reifyDataCon` work, as described in

https://gitlab.haskell.org/ghc/ghc/issues/17305#note_227023, but we

leave that as future work, since fixing the underlying issue is

much trickier (see

https://gitlab.haskell.org/ghc/ghc/issues/17305#note_227087).

(cherry picked from commit cfb66d181ac45ce3d934bda3521b94277e6eb683)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/880a6591436b55cd529a38cf150f06da5640a9a6">880a6591</a></strong>

<div>

<span>by Adam Gundry</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Reject all duplicate declarations involving DuplicateRecordFields (fixes #17965)

This fixes a bug that resulted in some programs being accepted that used the same

identifier as a field label and another declaration, depending on the order they

appeared in the source code.

(cherry picked from commit 0d8c7a6c7c3513089668f49efb0a2dd8b4bbe74a)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/73263d8262158ec1866d8f64fc1c6301e6218521">73263d82</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Ensure that printMinimalImports closes handle

Fixes #18166.

(cherry picked from commit 5afc160dee7142c96a842037fb64bee1429ad9ec)

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2b7c13267aaec9d2b3e2c0ad94ad343993e386d1">2b7c1326</a></strong>

<div>

<span>by Ben Gamari</span>

<i>at 2020-05-14T17:27:22-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts: Make non-existent linker search path merely a warning

As noted in #18105, previously this resulted in a rather intrusive error

message. This is in contrast to the general expectation that search

paths are merely places to look, not places that must exist.

Fixes #18105.

(cherry picked from commit 24af9f30681444380c25465f555599da563713cb)

</pre>

</li>

</ul>

<h4>28 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#86d5486039a2ce83db2b33410cc15bb06e8b7132">

compiler/basicTypes/RdrName.hs

</a>

</li>

<li class="file-stats">

<a href="#3419b48ba29451268a93adc303033d2aabf68179">

compiler/rename/RnNames.hs

</a>

</li>

<li class="file-stats">

<a href="#3668e5951898e1cee434d7e6fb5a139287ebe70d">

compiler/typecheck/TcExpr.hs

</a>

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<li class="file-stats">

<a href="#350c4076427c611b8f14e875a4ca553041c2b847">

compiler/typecheck/TcHsType.hs

</a>

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<li class="file-stats">

<a href="#4f8d5e20ad75b577322cf46f2e146466d905fe43">

compiler/typecheck/TcSplice.hs

</a>

</li>

<li class="file-stats">

<a href="#853e3f0b2adba3af1c88bbccec2b53c4c5532e39">

compiler/utils/FastString.hs

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<li class="file-stats">

<a href="#2ffbdc61d9d0e36978f07f62c00c08f33149e335">

rts/Updates.h

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<li class="file-stats">

<a href="#9670354b74fe55079feca82e1510129734b46f4f">

rts/linker/PEi386.c

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<li class="file-stats">

<a href="#ec675bd1dfbb74e562acdc649628789841b48f75">

rts/posix/itimer/Pthread.c

</a>

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<li class="file-stats">

<a href="#a9accda65187a56e0d42dd7fb7a717af6b41d918">

rts/sm/BlockAlloc.c

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<li class="file-stats">

<a href="#37a93df244a7789fddf557443b6398d06763e9cc">

rts/sm/Evac.c

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<li class="file-stats">

<a href="#b4a38dad10ba126e05a0b6adc99aa0c2eb742875">

rts/sm/NonMoving.c

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<a href="#4f5ba3ce18ccc17ad367193f379aa61f4c9180a0">

rts/sm/NonMovingMark.c

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<li class="file-stats">

<a href="#7893c76945f74c60b62878fa12bb5de75b8e1340">

rts/sm/NonMovingScav.c

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<li class="file-stats">

<a href="#0bfe9d4217bccddd6b00d2d6a5e56e7de4c86273">

rts/sm/Storage.c

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<li class="file-stats">

<a href="#858c5afd22318ffad6c8fd21ea982b647d29bc6b">

<span class="new-file">

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testsuite/tests/overloadedrecflds/should_fail/T17965.hs

</span>

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<li class="file-stats">

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testsuite/tests/overloadedrecflds/should_fail/T17965.stderr

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<a href="#a00c124cf8da637072ea4d1a5c4f7999c79aa4aa">

testsuite/tests/overloadedrecflds/should_fail/all.T

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<li class="file-stats">

<a href="#82f05d8af401750ee96408feb631581681a501eb">

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testsuite/tests/partial-sigs/should_compile/T18008.hs

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<a href="#638bf502d5c9ded68b185325d908464f7da3dcac">

testsuite/tests/partial-sigs/should_compile/all.T

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<a href="#04b9f675e37d99fa44409acbc392b8bf28ea2ec0">

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testsuite/tests/th/T17305.hs

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testsuite/tests/th/all.T

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<a href="#f7800ccc4b0837a02927d7feb0913cb8e0ce9d3b">

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testsuite/tests/typecheck/should_compile/T17792.hs

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testsuite/tests/typecheck/should_compile/T17792.stderr

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testsuite/tests/typecheck/should_compile/all.T

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<a href="#ace0b40479f1f32a8ee24b91dac8a666e610d0d9">

testsuite/tests/typecheck/should_fail/T13834.stderr

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</ul>

<h4>Changes:</h4>

<li id="86d5486039a2ce83db2b33410cc15bb06e8b7132">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#86d5486039a2ce83db2b33410cc15bb06e8b7132"><strong>compiler/basicTypes/RdrName.hs</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="57" 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="57" 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">@@ -57,7 +57,7 @@ module RdrName (</td>

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57

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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">gresToAvailInfo</span><span class="p">,</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"></span>

</pre>

</td>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ** Global 'RdrName' mapping elements: 'GlobalRdrElt', 'Provenance', 'ImportSpec'</span></span>

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<pre style="margin: 0;">-<span id="LC60" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrElt</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;">isLocalGRE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isRecFldGRE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">greLabel</span><span class="p">,</span></span>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrElt</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;">isLocalGRE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isRecFldGRE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">isOverloadedRecFldGRE</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">greLabel</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">unQualOK</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">qualSpecOK</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unQualSpecOK</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">pprNameProvenance</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Parent</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;">greParent_maybe</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">@@ -842,6 +842,12 @@ isRecFldGRE :: GlobalRdrElt -> Bool</td>

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<pre style="margin: 0;"> <span id="LC842" class="line" lang="haskell"><span class="n" style="color: #333;">isRecFldGRE</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GRE</span> <span class="p">{</span><span class="n" style="color: #333;">gre_par</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FldParent</span><span class="p">{}})</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="LC843" class="line" lang="haskell"><span class="n" style="color: #333;">isRecFldGRE</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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<pre style="margin: 0;"> <span id="LC844" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC845" class="line" lang="haskell"><span class="n" style="color: #333;">isOverloadedRecFldGRE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrElt</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="LC846" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ^ Is this a record field defined with DuplicateRecordFields?</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;">-- (See Note [Parents for record fields])</span></span>

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<pre style="margin: 0;">+<span id="LC848" class="line" lang="haskell"><span class="n" style="color: #333;">isOverloadedRecFldGRE</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GRE</span> <span class="p">{</span><span class="n" style="color: #333;">gre_par</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FldParent</span><span class="p">{</span><span class="n" style="color: #333;">par_lbl</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">}})</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="LC849" class="line" lang="haskell"><span class="n" style="color: #333;">isOverloadedRecFldGRE</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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<pre style="margin: 0;">+<span id="LC850" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC851" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns the field label of this GRE, if it has one</span></span>

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<pre style="margin: 0;"> <span id="LC852" class="line" lang="haskell"><span class="n" style="color: #333;">greLabel</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrElt</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;">FieldLabelString</span></span>

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<pre style="margin: 0;"> <span id="LC853" class="line" lang="haskell"><span class="n" style="color: #333;">greLabel</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">GRE</span><span class="p">{</span><span class="n" style="color: #333;">gre_par</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">FldParent</span><span class="p">{</span><span class="n" style="color: #333;">par_lbl</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;">lbl</span><span class="p">}})</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;">lbl</span></span>

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</li>

<li id="3419b48ba29451268a93adc303033d2aabf68179">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#3419b48ba29451268a93adc303033d2aabf68179"><strong>compiler/rename/RnNames.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">@@ -635,9 +635,12 @@ extendGlobalRdrEnvRn avails new_fixities</td>

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<pre style="margin: 0;"> <span id="LC635" 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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<pre style="margin: 0;"> <span id="LC636" 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="n" style="color: #333;">extendGlobalRdrEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">gre</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC637" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">-<span id="LC638" class="line" lang="haskell">        <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gre_name</span> <span class="n" style="color: #333;">gre</span></span>

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<pre style="margin: 0;">-<span id="LC639" class="line" lang="haskell">        <span class="n" style="color: #333;">occ</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">name</span></span>

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<pre style="margin: 0;">-<span id="LC640" class="line" lang="haskell">        <span class="n" style="color: #333;">dups</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="n" style="color: #333;">isLocalGRE</span> <span class="p">(</span><span class="n" style="color: #333;">lookupGlobalRdrEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">occ</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC638" class="line" lang="haskell">        <span class="n" style="color: #333;">occ</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">greOccName</span> <span class="n" style="color: #333;">gre</span></span>

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<pre style="margin: 0;">+<span id="LC639" class="line" lang="haskell">        <span class="n" style="color: #333;">dups</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filter</span> <span class="n" style="color: #333;">isDupGRE</span> <span class="p">(</span><span class="n" style="color: #333;">lookupGlobalRdrEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">occ</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC640" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Duplicate GREs are those defined locally with the same OccName,</span></span>

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<pre style="margin: 0;">+<span id="LC641" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- except cases where *both* GREs are DuplicateRecordFields (#17965).</span></span>

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<pre style="margin: 0;">+<span id="LC642" class="line" lang="haskell">        <span class="n" style="color: #333;">isDupGRE</span> <span class="n" style="color: #333;">gre'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isLocalGRE</span> <span class="n" style="color: #333;">gre'</span></span>

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<pre style="margin: 0;">+<span id="LC643" class="line" lang="haskell">                <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isOverloadedRecFldGRE</span> <span class="n" style="color: #333;">gre</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">isOverloadedRecFldGRE</span> <span class="n" style="color: #333;">gre'</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC644" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC645" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC646" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- *********************************************************************</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">@@ -1611,9 +1614,8 @@ printMinimalImports imports_w_usage</td>

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<pre style="margin: 0;"> <span id="LC1614" 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;">imports'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getMinimalImports</span> <span class="n" style="color: #333;">imports_w_usage</span></span>

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<pre style="margin: 0;"> <span id="LC1615" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">this_mod</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getModule</span></span>

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<pre style="margin: 0;"> <span id="LC1616" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">dflags</span>   <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

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<td class="diff-line-num new_line old" data-linenumber="1617" 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="LC1614" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span></span>

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<pre style="margin: 0;">-<span id="LC1615" class="line" lang="haskell">         <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">h</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">openFile</span> <span class="p">(</span><span class="n" style="color: #333;">mkFilename</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">this_mod</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">WriteMode</span></span>

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<pre style="margin: 0;">-<span id="LC1616" class="line" lang="haskell">            <span class="p">;</span> <span class="n" style="color: #333;">printForUser</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">h</span> <span class="n" style="color: #333;">neverQualify</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">imports'</span><span class="p">))</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC1617" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">liftIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">withFile</span> <span class="p">(</span><span class="n" style="color: #333;">mkFilename</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">this_mod</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">WriteMode</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">h</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;">+<span id="LC1618" class="line" lang="haskell">          <span class="n" style="color: #333;">printForUser</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">h</span> <span class="n" style="color: #333;">neverQualify</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">imports'</span><span class="p">))</span></span>

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<td class="diff-line-num old_line" data-linenumber="1617" 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="LC1619" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- The neverQualify is important.  We are printing Names</span></span>

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<pre style="margin: 0;"> <span id="LC1620" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- but they are in the context of an 'import' decl, and</span></span>

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<td class="diff-line-num new_line" data-linenumber="1621" 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="LC1621" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- we never qualify things inside there</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1769" 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="1771" 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">@@ -1769,14 +1771,13 @@ addDupDeclErr gres@(gre : _)</td>

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<pre style="margin: 0;"> <span id="LC1771" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addErrAt</span> <span class="p">(</span><span class="n" style="color: #333;">getSrcSpan</span> <span class="p">(</span><span class="n" style="color: #333;">last</span> <span class="n" style="color: #333;">sorted_names</span><span class="p">))</span> <span class="o" style="font-weight: 600;">$</span></span>

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<td class="diff-line-num old_line" data-linenumber="1770" 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="LC1772" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Report the error at the later location</span></span>

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<pre style="margin: 0;"> <span id="LC1773" class="line" lang="haskell">    <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;">"Multiple declarations of"</span> <span class="o" style="font-weight: 600;"><+></span></span>

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<pre style="margin: 0;">-<span id="LC1772" class="line" lang="haskell">             <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">nameOccName</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">nam</span>e</span><span class="p">)),</span></span>

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1774

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<pre style="margin: 0;">+<span id="LC1774" class="line" lang="haskell">             <span class="n" style="color: #333;">quotes</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left">greOccName</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">gr</span>e</span><span class="p">)),</span></span>

</pre>

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1773

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1775

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<pre style="margin: 0;"> <span id="LC1775" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- NB. print the OccName, not the Name, because the</span></span>

</pre>

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1774

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1776

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<pre style="margin: 0;"> <span id="LC1776" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- latter might not be in scope in the RdrEnv and so will</span></span>

</pre>

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1775

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1777

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<pre style="margin: 0;"> <span id="LC1777" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- be printed qualified.</span></span>

</pre>

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1776

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1778

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<pre style="margin: 0;"> <span id="LC1778" class="line" lang="haskell">          <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Declared at:"</span> <span class="o" style="font-weight: 600;"><+></span></span>

</pre>

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1777

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1779

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<pre style="margin: 0;"> <span id="LC1779" class="line" lang="haskell">                   <span class="n" style="color: #333;">vcat</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">nameSrcLoc</span><span class="p">)</span> <span class="n" style="color: #333;">sorted_names</span><span class="p">)]</span></span>

</pre>

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1778

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1780

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<pre style="margin: 0;"> <span id="LC1780" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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1779

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<pre style="margin: 0;">-<span id="LC1779" class="line" lang="haskell">    <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gre_name</span> <span class="n" style="color: #333;">gre</span></span>

</pre>

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1780

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1781

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<pre style="margin: 0;"> <span id="LC1781" class="line" lang="haskell">    <span class="n" style="color: #333;">sorted_names</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sortWith</span> <span class="n" style="color: #333;">nameSrcLoc</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">gre_name</span> <span class="n" style="color: #333;">gres</span><span class="p">)</span></span>

</pre>

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1781

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1782

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<pre style="margin: 0;"> <span id="LC1782" class="line" lang="haskell"></span>

</pre>

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1782

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1783

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<pre style="margin: 0;"> <span id="LC1783" class="line" lang="haskell"></span>

</pre>

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<br>

</li>

<li id="3668e5951898e1cee434d7e6fb5a139287ebe70d">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#3668e5951898e1cee434d7e6fb5a139287ebe70d"><strong>compiler/typecheck/TcExpr.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1080" 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="1080" 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">@@ -1080,10 +1080,6 @@ isHsValArg (HsValArg {})  = True</td>

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1080

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1080

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<pre style="margin: 0;"> <span id="LC1080" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</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>

</pre>

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1081

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<td class="diff-line-num new_line" data-linenumber="1081" 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">

1081

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<pre style="margin: 0;"> <span id="LC1081" class="line" lang="haskell"><span class="n" style="color: #333;">isHsValArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</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>

</pre>

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1082

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1082

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<pre style="margin: 0;"> <span id="LC1082" class="line" lang="haskell"></span>

</pre>

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1083

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<td class="diff-line-num new_line old" data-linenumber="1083" 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="LC1083" class="line" lang="haskell"><span class="n" style="color: #333;">isHsTypeArg</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">tm</span> <span class="n" style="color: #333;">ty</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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1084

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<pre style="margin: 0;">-<span id="LC1084" class="line" lang="haskell"><span class="n" style="color: #333;">isHsTypeArg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1085" 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">

1085

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<pre style="margin: 0;">-<span id="LC1085" class="line" lang="haskell"><span class="n" style="color: #333;">isHsTypeArg</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>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1086" 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">

1086

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<td class="diff-line-num new_line old" data-linenumber="1083" 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="LC1086" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1087" 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">

1087

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<td class="diff-line-num new_line" data-linenumber="1083" 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">

1083

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<pre style="margin: 0;"> <span id="LC1083" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsArg</span> <span class="n" style="color: #333;">tm</span> <span class="n" style="color: #333;">ty</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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<td class="diff-line-num old_line" data-linenumber="1088" 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">

1088

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<td class="diff-line-num new_line" data-linenumber="1084" 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">

1084

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<pre style="margin: 0;"> <span id="LC1084" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsArgPar</span> <span class="p">{})</span>  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1089" 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">

1089

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<td class="diff-line-num new_line" data-linenumber="1085" 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">

1085

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<pre style="margin: 0;"> <span id="LC1085" class="line" lang="haskell"><span class="n" style="color: #333;">isArgPar</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsValArg</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>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1218" 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="1214" 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">@@ -1218,14 +1214,6 @@ tcArgs :: LHsExpr GhcRn   -- ^ The function itself (for err msgs only)</td>

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<td class="diff-line-num old_line" data-linenumber="1218" 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">

1218

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<td class="diff-line-num new_line" data-linenumber="1214" 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">

1214

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<pre style="margin: 0;"> <span id="LC1214" class="line" lang="haskell">       <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsWrapper</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsExprArgOut</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">TcSigmaType</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1219" 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">

1219

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<td class="diff-line-num new_line" data-linenumber="1215" 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">

1215

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<pre style="margin: 0;"> <span id="LC1215" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- ^ (a wrapper for the function, the tc'd args, result type)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1220" 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">

1220

</td>

<td class="diff-line-num new_line" data-linenumber="1216" 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">

1216

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<pre style="margin: 0;"> <span id="LC1216" class="line" lang="haskell"><span class="n" style="color: #333;">tcArgs</span> <span class="n" style="color: #333;">fun</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;">fun_orig</span> <span class="n" style="color: #333;">orig_args</span> <span class="n" style="color: #333;">herald</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1221" 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">

1221

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1221" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fun_is_out_of_scope</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1222" 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">

1222

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<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1222" class="line" lang="haskell">  <span class="p">,</span> <span class="n" style="color: #333;">any</span> <span class="n" style="color: #333;">isHsTypeArg</span> <span class="n" style="color: #333;">orig_args</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1223" 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">

1223

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1223" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">failM</span>  <span class="c1" style="color: #998; font-style: italic;">-- See Note [VTA for out-of-scope functions]</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1224" 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">

1224

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1224" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- We have /already/ emitted a CHoleCan constraint (in tcInferFun),</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1225" 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">

1225

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1225" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- which will later cough up a "Variable not in scope error", so</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1226" 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">

1226

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1226" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- we can simply fail now, avoiding a confusing error cascade</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1227" 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">

1227

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1227" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1228" 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">

1228

</td>

<td class="diff-line-num new_line old" data-linenumber="1217" 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="LC1228" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1229" 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">

1229

</td>

<td class="diff-line-num new_line" data-linenumber="1217" 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">

1217

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<pre style="margin: 0;"> <span id="LC1217" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">orig_fun_ty</span> <span class="n" style="color: #333;">orig_args</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1230" 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">

1230

</td>

<td class="diff-line-num new_line" data-linenumber="1218" 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">

1218

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<pre style="margin: 0;"> <span id="LC1218" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1231" 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">

1231

</td>

<td class="diff-line-num new_line" data-linenumber="1219" 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">

1219

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<pre style="margin: 0;"> <span id="LC1219" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Don't count visible type arguments when determining how many arguments</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1247" 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="1235" 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">@@ -1247,6 +1235,10 @@ tcArgs fun orig_fun_ty fun_orig orig_args herald</td>

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1247

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<pre style="margin: 0;"> <span id="LC1235" class="line" lang="haskell">           <span class="p">}</span></span>

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<td class="diff-line-num old_line" data-linenumber="1248" 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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<td class="diff-line-num new_line" data-linenumber="1236" 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="LC1236" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1249" 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="LC1237" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">acc_args</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">fun_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsTypeArg</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">hs_ty_arg</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">args</span><span class="p">)</span></span>

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<td class="diff-line-num new old_line" data-linenumber="1250" 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="1238" 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="LC1238" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fun_is_out_of_scope</span>   <span class="c1" style="color: #998; font-style: italic;">-- See Note [VTA for out-of-scope functions]</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1250" 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="1239" 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="LC1239" 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;">acc_args</span> <span class="p">(</span><span class="n" style="color: #333;">n</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;">fun_ty</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1240" 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="LC1240" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1250" 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="1241" 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="LC1241" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>

</pre>

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1250

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<td class="diff-line-num new_line" data-linenumber="1242" 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">

1242

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<pre style="margin: 0;"> <span id="LC1242" 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;">wrap1</span><span class="p">,</span> <span class="n" style="color: #333;">upsilon_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">topInstantiateInferred</span> <span class="n" style="color: #333;">fun_orig</span> <span class="n" style="color: #333;">fun_ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1251" 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">

1251

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<td class="diff-line-num new_line" data-linenumber="1243" 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">

1243

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<pre style="margin: 0;"> <span id="LC1243" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- wrap1 :: fun_ty "->" upsilon_ty</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1252" 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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<td class="diff-line-num new_line" data-linenumber="1244" 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">

1244

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<pre style="margin: 0;"> <span id="LC1244" class="line" lang="haskell">           <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">tcSplitForAllTy_maybe</span> <span class="n" style="color: #333;">upsilon_ty</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1337" 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="1329" 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">@@ -1337,17 +1329,23 @@ generate an immediate failure (in tc_app_err), saying that a function</td>

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1337

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<td class="diff-line-num new_line" data-linenumber="1329" 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">

1329

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<pre style="margin: 0;"> <span id="LC1329" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">of type 'alpha' can't be applied to Bool.  That's insane!  And indeed</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1338" 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">

1338

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<td class="diff-line-num new_line" data-linenumber="1330" 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">

1330

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<pre style="margin: 0;"> <span id="LC1330" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">users complain bitterly (#13834, #17150.)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1339" 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">

1339

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<td class="diff-line-num new_line" data-linenumber="1331" 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">

1331

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<pre style="margin: 0;"> <span id="LC1331" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1340" 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">

1340

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<td class="diff-line-num new_line old" data-linenumber="1332" 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="LC1340" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The right error is the CHoleCan, which reports 'wurble' as out of</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1341" 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">

1341

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<td class="diff-line-num new_line old" data-linenumber="1332" 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="LC1341" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">scope, and tries to give its type.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1332" 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="LC1332" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The right error is the CHoleCan, which has /already/ been emitted by</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1333" 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">

1333

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<pre style="margin: 0;">+<span id="LC1333" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">tcUnboundId.  It later reports 'wurble' as out of scope, and tries to</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1334" 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">

1334

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<pre style="margin: 0;">+<span id="LC1334" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">give its type.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1335" 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">

1335

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<pre style="margin: 0;">+<span id="LC1335" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1336" 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">

1336

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<pre style="margin: 0;">+<span id="LC1336" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Fortunately in tcArgs we still have access to the function, so we can</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1337" 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">

1337

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<pre style="margin: 0;">+<span id="LC1337" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">check if it is a HsUnboundVar.  We use this info to simply skip over</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1338" 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">

1338

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<pre style="margin: 0;">+<span id="LC1338" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">any visible type arguments.  We've already inferred the type of the</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="1339" 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">

1339

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<pre style="margin: 0;">+<span id="LC1339" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">function, so we'll /already/ have emitted a CHoleCan constraint;</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1342" 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="1340" 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">

1340

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<pre style="margin: 0;">+<span id="LC1340" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">failing preserves that constraint.</span></span>

</pre>

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1342

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<td class="diff-line-num new_line" data-linenumber="1341" 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">

1341

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<pre style="margin: 0;"> <span id="LC1341" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1343" 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">

1343

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<td class="diff-line-num new_line old" data-linenumber="1342" 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="LC1343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Fortunately in tcArgs we still have acces to the function, so</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1344" 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">

1344

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<td class="diff-line-num new_line old" data-linenumber="1342" 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="LC1344" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we can check if it is a HsUnboundVar.  If so, we simply fail</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1345" 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">

1345

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<td class="diff-line-num new_line old" data-linenumber="1342" 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="LC1345" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">immediately.  We've already inferred the type of the function,</span></span>

</pre>

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1346

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<td class="diff-line-num new_line old" data-linenumber="1342" 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="LC1346" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">so we'll /already/ have emitted a CHoleCan constraint; failing</span></span>

</pre>

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1347

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<td class="diff-line-num new_line old" data-linenumber="1342" 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="LC1347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">preserves that constraint.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1348" 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="1342" 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">

1342

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<pre style="margin: 0;">+<span id="LC1342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We do /not/ want to fail altogether in this case (via failM) becuase</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1348" 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="1343" 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">

1343

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<pre style="margin: 0;">+<span id="LC1343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">that may abandon an entire instance decl, which (in the presence of</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1348" 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="1344" 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">

1344

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<pre style="margin: 0;">+<span id="LC1344" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-fdefer-type-errors) leads to leading to #17792.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1348" 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">

1348

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<td class="diff-line-num new_line" data-linenumber="1345" 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">

1345

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<pre style="margin: 0;"> <span id="LC1345" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="1349" 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">

1349

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<td class="diff-line-num new_line old" data-linenumber="1346" 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="LC1349" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">A mild shortcoming of this approach is that we thereby</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1350" 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">

1350

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<pre style="margin: 0;">-<span id="LC1350" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">don't typecheck any of the arguments, but so be it.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="1346" 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="LC1346" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Downside; the typechecked term has lost its visible type arguments; we</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC1347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">don't even kind-check them.  But let's jump that bridge if we come to</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC1348" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">it.  Meanwhile, let's not crash!</span></span>

</pre>

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1351

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1349

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<pre style="margin: 0;"> <span id="LC1349" class="line" lang="haskell"></span>

</pre>

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1352

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1350

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<pre style="margin: 0;"> <span id="LC1350" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Visible type application zonk]</span></span>

</pre>

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1353

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1351

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<pre style="margin: 0;"> <span id="LC1351" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<br>

</li>

<li id="350c4076427c611b8f14e875a4ca553041c2b847">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#350c4076427c611b8f14e875a4ca553041c2b847"><strong>compiler/typecheck/TcHsType.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="725" 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="725" 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">@@ -725,6 +725,7 @@ tc_hs_type mode forall@(HsForAllTy { hst_fvf = fvf, hst_bndrs = hs_tvs</td>

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<pre style="margin: 0;"> <span id="LC725" class="line" lang="haskell">             <span class="n" style="color: #333;">m_telescope</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;">sep</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">hs_tvs</span><span class="p">))</span></span>

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726

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<pre style="margin: 0;"> <span id="LC726" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="727" 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="LC727" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">m_telescope</span> <span class="n" style="color: #333;">tvs'</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC728" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- See Note [Skolem escape and forall-types]</span></span>

</pre>

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728

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<td class="diff-line-num new_line" data-linenumber="729" 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">

729

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<pre style="margin: 0;"> <span id="LC729" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="729" 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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<td class="diff-line-num new_line" data-linenumber="730" 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">

730

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<pre style="margin: 0;"> <span id="LC730" 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;">mkForAllTys</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">ty'</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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730

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<td class="diff-line-num new_line" data-linenumber="731" 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">

731

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<pre style="margin: 0;"> <span id="LC731" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="913" 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="914" 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">@@ -913,6 +914,26 @@ under these conditions.</td>

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<td class="diff-line-num old_line" data-linenumber="913" 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">

913

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<td class="diff-line-num new_line" data-linenumber="914" 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">

914

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<pre style="margin: 0;"> <span id="LC914" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See related Note [Wildcards in visible type application] here and</span></span>

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914

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<td class="diff-line-num new_line" data-linenumber="915" 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">

915

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<pre style="margin: 0;"> <span id="LC915" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [The wildcard story for types] in GHC.Hs.Types</span></span>

</pre>

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915

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<td class="diff-line-num new_line" data-linenumber="916" 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">

916

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<pre style="margin: 0;"> <span id="LC916" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="917" 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">

917

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<pre style="margin: 0;">+<span id="LC917" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Skolem escape and forall-types]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="918" 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">

918

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<pre style="margin: 0;">+<span id="LC918" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="919" 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">

919

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC919" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Consider</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="920" 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">

920

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<pre style="margin: 0;">+<span id="LC920" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  f :: forall a. (forall kb (b :: kb). Proxy '[a, b]) -> ()</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="921" 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">

921

</td>

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<pre style="margin: 0;">+<span id="LC921" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="922" 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">

922

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<pre style="margin: 0;">+<span id="LC922" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The Proxy '[a,b] forces a and b to have the same kind.  But a's</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="923" 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">

923

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<pre style="margin: 0;">+<span id="LC923" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">kind must be bound outside the 'forall a', and hence escapes.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="924" 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">

924

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<pre style="margin: 0;">+<span id="LC924" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We discover this by building an implication constraint for</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="925" 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">

925

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<pre style="margin: 0;">+<span id="LC925" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">each forall.  So the inner implication constraint will look like</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="926" 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">

926

</td>

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<pre style="margin: 0;">+<span id="LC926" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    forall kb (b::kb).  kb ~ ka</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="927" 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">

927

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC927" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">where ka is a's kind.  We can't unify these two, /even/ if ka is</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="928" 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">

928

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<pre style="margin: 0;">+<span id="LC928" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">unification variable, because it would be untouchable inside</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="929" 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">

929

</td>

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<pre style="margin: 0;">+<span id="LC929" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">this inner implication.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="930" 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">

930

</td>

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<pre style="margin: 0;">+<span id="LC930" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="931" 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">

931

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<pre style="margin: 0;">+<span id="LC931" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">That's what the pushLevelAndCaptureConstraints, plus subsequent</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="932" 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">

932

</td>

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<pre style="margin: 0;">+<span id="LC932" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">emitResidualTvConstraint is all about, when kind-checking</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="933" 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">

933

</td>

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<pre style="margin: 0;">+<span id="LC933" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">HsForAllTy.</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="934" 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">

934

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC934" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="935" 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">

935

</td>

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<pre style="margin: 0;">+<span id="LC935" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note that we don't need to /simplify/ the constraints here</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="916" 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="936" 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">

936

</td>

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<pre style="margin: 0;">+<span id="LC936" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">because we aren't generalising. We just capture them.</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="916" 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">

916

</td>

<td class="diff-line-num new_line" data-linenumber="937" 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">

937

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC937" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="917" 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">

917

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<td class="diff-line-num new_line" data-linenumber="938" 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">

938

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<pre style="margin: 0;"> <span id="LC938" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="918" 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">

918

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<td class="diff-line-num new_line" data-linenumber="939" 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">

939

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<pre style="margin: 0;"> <span id="LC939" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- *********************************************************************</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2810" 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="2831" 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">@@ -2810,10 +2831,13 @@ kindGeneralizeAll ty = do { traceTc "kindGeneralizeAll" empty</td>

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<td class="diff-line-num old_line" data-linenumber="2810" 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">

2810

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<td class="diff-line-num new_line" data-linenumber="2831" 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">

2831

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<pre style="margin: 0;"> <span id="LC2831" class="line" lang="haskell">                          <span class="p">;</span> <span class="n" style="color: #333;">kindGeneralizeSome</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="kt" style="color: #458; font-weight: 600;">True</span><span class="p">)</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2811" 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">

2811

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<td class="diff-line-num new_line" data-linenumber="2832" 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">

2832

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<pre style="margin: 0;"> <span id="LC2832" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2812" 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">

2812

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<td class="diff-line-num new_line" data-linenumber="2833" 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">

2833

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<pre style="margin: 0;"> <span id="LC2833" class="line" lang="haskell"><span class="cd">-- | Specialized version of 'kindGeneralizeSome', but where no variables</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2813" 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">

2813

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<td class="diff-line-num new_line old" data-linenumber="2834" 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="LC2813" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- can be generalized. Use this variant when it is unknowable whether metavariables</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2814" 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">

2814

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<td class="diff-line-num new_line old" data-linenumber="2834" 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="LC2814" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- might later be constrained.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2815" 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">

2815

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<td class="diff-line-num new_line old" data-linenumber="2834" 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="LC2815" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Recipe for checking a signature] for why and where this</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2816" 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">

2816

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<td class="diff-line-num new_line old" data-linenumber="2834" 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="LC2816" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- function is needed.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2834" 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">

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;">-- can be generalized, but perhaps some may neeed to be promoted.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2835" 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">

2835

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<pre style="margin: 0;">+<span id="LC2835" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Use this variant when it is unknowable whether metavariables might</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2836" 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">

2836

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<pre style="margin: 0;">+<span id="LC2836" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- later be constrained.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2837" 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">

2837

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<pre style="margin: 0;">+<span id="LC2837" 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 new old_line" data-linenumber="2817" 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="2838" 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">

2838

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<pre style="margin: 0;">+<span id="LC2838" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- To see why this promotion is needed, see</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2839" 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">

2839

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<pre style="margin: 0;">+<span id="LC2839" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Recipe for checking a signature], and especially</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2817" 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="2840" 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">

2840

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<pre style="margin: 0;">+<span id="LC2840" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Promotion in signatures].</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="2817" 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">

2817

</td>

<td class="diff-line-num new_line" data-linenumber="2841" 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">

2841

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<pre style="margin: 0;"> <span id="LC2841" class="line" lang="haskell"><span class="n" style="color: #333;">kindGeneralizeNone</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span>  <span class="c1" style="color: #998; font-style: italic;">-- needn't be zonked</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2818" 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">

2818

</td>

<td class="diff-line-num new_line" data-linenumber="2842" 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">

2842

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<pre style="margin: 0;"> <span id="LC2842" class="line" lang="haskell">                   <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2819" 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">

2819

</td>

<td class="diff-line-num new_line" data-linenumber="2843" 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">

2843

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<pre style="margin: 0;"> <span id="LC2843" class="line" lang="haskell"><span class="n" style="color: #333;">kindGeneralizeNone</span> <span class="n" style="color: #333;">ty</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3148" 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="3172" 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">@@ -3148,7 +3172,7 @@ tcHsPartialSigType ctxt sig_ty</td>

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<td class="diff-line-num old_line" data-linenumber="3148" 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">

3148

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<td class="diff-line-num new_line" data-linenumber="3172" 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">

3172

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<pre style="margin: 0;"> <span id="LC3172" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3149" 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">

3149

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<td class="diff-line-num new_line" data-linenumber="3173" 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">

3173

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<pre style="margin: 0;"> <span id="LC3173" 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;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3150" 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">

3150

</td>

<td class="diff-line-num new_line" data-linenumber="3174" 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">

3174

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC3174" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="3151" 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">

3151

</td>

<td class="diff-line-num new_line old" data-linenumber="3175" 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="LC3151" class="line" lang="haskell">       <span class="idiff left">  </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- No kind-generalization here:</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3152" 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="3175" 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">

3175

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<pre style="margin: 0;">+<span id="LC3175" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;"><span class="idiff left right">-- No kind-generalization here, but perhaps some promotion</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3152" 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">

3152

</td>

<td class="diff-line-num new_line" data-linenumber="3176" 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">

3176

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<pre style="margin: 0;"> <span id="LC3176" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">kindGeneralizeNone</span> <span class="p">(</span><span class="n" style="color: #333;">mkSpecForAllTys</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3153" 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">

3153

</td>

<td class="diff-line-num new_line" data-linenumber="3177" 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">

3177

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<pre style="margin: 0;"> <span id="LC3177" class="line" lang="haskell">                             <span class="n" style="color: #333;">mkSpecForAllTys</span> <span class="n" style="color: #333;">explicit_tvs</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3154" 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">

3154

</td>

<td class="diff-line-num new_line" data-linenumber="3178" 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">

3178

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<pre style="margin: 0;"> <span id="LC3178" class="line" lang="haskell">                             <span class="n" style="color: #333;">mkPhiTy</span> <span class="n" style="color: #333;">theta</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3159" 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="3183" 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">@@ -3159,6 +3183,14 @@ tcHsPartialSigType ctxt sig_ty</td>

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<td class="diff-line-num old_line" data-linenumber="3159" 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">

3159

</td>

<td class="diff-line-num new_line" data-linenumber="3183" 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">

3183

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<pre style="margin: 0;"> <span id="LC3183" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- See Note [Extra-constraint holes in partial type signatures]</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3160" 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">

3160

</td>

<td class="diff-line-num new_line" data-linenumber="3184" 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">

3184

</td>

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<pre style="margin: 0;"> <span id="LC3184" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">emitNamedWildCardHoleConstraints</span> <span class="n" style="color: #333;">wcs</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3161" 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">

3161

</td>

<td class="diff-line-num new_line" data-linenumber="3185" 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">

3185

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC3185" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3186" 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">

3186

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC3186" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- Zonk, so that any nested foralls can "see" their occurrences</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3187" 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">

3187

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC3187" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- See Note [Checking partial type signatures], in</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3188" 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">

3188

</td>

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<pre style="margin: 0;">+<span id="LC3188" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- the bullet on Nested foralls.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3189" 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">

3189

</td>

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<pre style="margin: 0;">+<span id="LC3189" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">zonkTcTyVarToTyVar</span> <span class="n" style="color: #333;">implicit_tvs</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3190" 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">

3190

</td>

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<pre style="margin: 0;">+<span id="LC3190" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">explicit_tvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">zonkTcTyVarToTyVar</span> <span class="n" style="color: #333;">explicit_tvs</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3191" 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">

3191

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<pre style="margin: 0;">+<span id="LC3191" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">theta</span>        <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">theta</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3192" 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">

3192

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<pre style="margin: 0;">+<span id="LC3192" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">tau</span>          <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">tau</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3162" 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="3193" 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">

3193

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<pre style="margin: 0;">+<span id="LC3193" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3162" 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">

3162

</td>

<td class="diff-line-num new_line" data-linenumber="3194" 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">

3194

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<pre style="margin: 0;"> <span id="LC3194" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- We return a proper (Name,TyVar) environment, to be sure that</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3163" 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">

3163

</td>

<td class="diff-line-num new_line" data-linenumber="3195" 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">

3195

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<pre style="margin: 0;"> <span id="LC3195" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- we bring the right name into scope in the function body.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3164" 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">

3164

</td>

<td class="diff-line-num new_line" data-linenumber="3196" 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">

3196

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<pre style="margin: 0;"> <span id="LC3196" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- Test case: partial-sigs/should_compile/LocalDefinitionBug</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3167" 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="3199" 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">@@ -3167,7 +3199,7 @@ tcHsPartialSigType ctxt sig_ty</td>

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3167

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<td class="diff-line-num new_line" data-linenumber="3199" 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">

3199

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<pre style="margin: 0;"> <span id="LC3199" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3168" 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">

3168

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<td class="diff-line-num new_line" data-linenumber="3200" 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">

3200

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<pre style="margin: 0;"> <span id="LC3200" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- NB: checkValidType on the final inferred type will be</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3169" 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">

3169

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<td class="diff-line-num new_line" data-linenumber="3201" 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">

3201

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<pre style="margin: 0;"> <span id="LC3201" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">--     done later by checkInferredPolyId.  We can't do it</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3170" 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">

3170

</td>

<td class="diff-line-num new_line old" data-linenumber="3202" 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="LC3170" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">--     here because we don't have a complete t<span class="idiff left right">u</span>ype to check</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3171" 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="3202" 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">

3202

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<pre style="margin: 0;">+<span id="LC3202" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">--     here because we don't have a complete type to check</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3171" 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">

3171

</td>

<td class="diff-line-num new_line" data-linenumber="3203" 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">

3203

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<pre style="margin: 0;"> <span id="LC3203" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3172" 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">

3172

</td>

<td class="diff-line-num new_line" data-linenumber="3204" 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">

3204

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<pre style="margin: 0;"> <span id="LC3204" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcHsPartialSigType"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv_prs</span><span class="p">)</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3173" 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">

3173

</td>

<td class="diff-line-num new_line" data-linenumber="3205" 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">

3205

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<pre style="margin: 0;"> <span id="LC3205" 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;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">,</span> <span class="n" style="color: #333;">tv_prs</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3189" 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="3221" 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">@@ -3189,13 +3221,32 @@ tcPartialContext hs_theta</td>

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<td class="diff-line-num old_line" data-linenumber="3189" 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">

3189

</td>

<td class="diff-line-num new_line" data-linenumber="3221" 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">

3221

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<pre style="margin: 0;"> <span id="LC3221" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3190" 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">

3190

</td>

<td class="diff-line-num new_line" data-linenumber="3222" 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">

3222

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<pre style="margin: 0;"> <span id="LC3222" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Checking partial type signatures]</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="3191" 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">

3191

</td>

<td class="diff-line-num new_line" data-linenumber="3223" 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">

3223

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<pre style="margin: 0;"> <span id="LC3223" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="3192" 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">

3192

</td>

<td class="diff-line-num new_line old" data-linenumber="3224" 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="LC3192" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See also Note [Recipe for checking a signature]</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="3193" 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="3224" 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">

3224

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<pre style="margin: 0;">+<span id="LC3224" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">This Note is about tcHsPartialSigType.  See also</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3225" 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">

3225

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<pre style="margin: 0;">+<span id="LC3225" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Recipe for checking a signature]</span></span>

</pre>

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3193

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3226

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<pre style="margin: 0;"> <span id="LC3226" class="line" lang="haskell"></span>

</pre>

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3194

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<td class="diff-line-num new_line old" data-linenumber="3227" 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="LC3194" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When we have a par<span class="idiff left right">it</span>al signature like</span></span>

</pre>

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3195

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<td class="diff-line-num new_line old" data-linenumber="3227" 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="LC3195" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">   f<span class="idiff left right">,g</span> :: forall a. a -> _</span></span>

</pre>

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3227

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<pre style="margin: 0;">+<span id="LC3227" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When we have a par<span class="idiff left right">ti</span>al signature like</span></span>

</pre>

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3228

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<pre style="margin: 0;">+<span id="LC3228" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">   f :: forall a. a -> _</span></span>

</pre>

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3196

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3229

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<pre style="margin: 0;"> <span id="LC3229" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">we do the following</span></span>

</pre>

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3197

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3230

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<pre style="margin: 0;"> <span id="LC3230" class="line" lang="haskell"></span>

</pre>

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3198

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<pre style="margin: 0;">-<span id="LC3198" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* In TcSigs.tcUserSigType we return a PartialSig, which (unlike</span></span>

</pre>

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3231

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<pre style="margin: 0;">+<span id="LC3231" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* tcHsPartialSigType does not make quantified type (forall a. blah)</span></span>

</pre>

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3232

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<pre style="margin: 0;">+<span id="LC3232" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  and then instantiate it -- it makes no sense to instantiate a type</span></span>

</pre>

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3233

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<pre style="margin: 0;">+<span id="LC3233" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  with wildcards in it.  Rather, tcHsPartialSigType just returns the</span></span>

</pre>

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3234

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<pre style="margin: 0;">+<span id="LC3234" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  'a' and the 'blah' separately.</span></span>

</pre>

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3235

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<pre style="margin: 0;">+<span id="LC3235" class="line" lang="haskell"></span>

</pre>

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3236

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<pre style="margin: 0;">+<span id="LC3236" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  Nor, for the same reason, do we push a level in tcHsPartialSigType.</span></span>

</pre>

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3237

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<pre style="margin: 0;">+<span id="LC3237" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3238" 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">

3238

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<pre style="margin: 0;">+<span id="LC3238" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* We instantiate 'a' to a unification variable, a TyVarTv, and /not/</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3239" 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">

3239

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<pre style="margin: 0;">+<span id="LC3239" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  a skolem; hence the "_Tv" in bindExplicitTKBndrs_Tv.  Consider</span></span>

</pre>

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3240

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<pre style="margin: 0;">+<span id="LC3240" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    f :: forall a. a -> _</span></span>

</pre>

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3241

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<pre style="margin: 0;">+<span id="LC3241" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    g :: forall b. _ -> b</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3242" 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">

3242

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<pre style="margin: 0;">+<span id="LC3242" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    f = g</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3243" 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">

3243

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<pre style="margin: 0;">+<span id="LC3243" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">    g = f</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="3244" 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">

3244

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<pre style="margin: 0;">+<span id="LC3244" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  They are typechecked as a recursive group, with monomorphic types,</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="3245" 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">

3245

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<pre style="margin: 0;">+<span id="LC3245" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  so 'a' and 'b' will get unified together.  Very like kind inference</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3199" 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="3246" 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">

3246

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<pre style="margin: 0;">+<span id="LC3246" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  for mutually recursive data types (sans CUSKs or SAKS); see</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3199" 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="3247" 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">

3247

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<pre style="margin: 0;">+<span id="LC3247" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  Note [Cloning for tyvar binders] in GHC.Tc.Gen.HsType</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3248" 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">

3248

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<pre style="margin: 0;">+<span id="LC3248" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3249" 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">

3249

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<pre style="margin: 0;">+<span id="LC3249" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* In GHC.Tc.Gen.Sig.tcUserSigType we return a PartialSig, which (unlike</span></span>

</pre>

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3199

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3250

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<pre style="margin: 0;"> <span id="LC3250" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  the companion CompleteSig) contains the original, as-yet-unchecked</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3200" 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">

3200

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<td class="diff-line-num new_line" data-linenumber="3251" 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">

3251

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<pre style="margin: 0;"> <span id="LC3251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  source-code LHsSigWcType</span></span>

</pre>

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3201

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<td class="diff-line-num new_line" data-linenumber="3252" 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">

3252

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<pre style="margin: 0;"> <span id="LC3252" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3203" 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="3254" 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">@@ -3203,18 +3254,34 @@ we do the following</td>

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3203

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<td class="diff-line-num new_line" data-linenumber="3254" 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">

3254

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<pre style="margin: 0;"> <span id="LC3254" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  call tchsPartialSig (defined near this Note).  It kind-checks the</span></span>

</pre>

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3204

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<td class="diff-line-num new_line" data-linenumber="3255" 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">

3255

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<pre style="margin: 0;"> <span id="LC3255" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  LHsSigWcType, creating fresh unification variables for each "_"</span></span>

</pre>

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3205

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<td class="diff-line-num new_line" data-linenumber="3256" 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">

3256

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<pre style="margin: 0;"> <span id="LC3256" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  wildcard.  It's important that the wildcards for f and g are distinct</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3206" 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">

3206

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<td class="diff-line-num new_line old" data-linenumber="3257" 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="LC3206" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  beca<span class="idiff left right">se they migh</span> get instantiated completely differently.  E.g.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3207" 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="3257" 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">

3257

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<pre style="margin: 0;">+<span id="LC3257" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  beca<span class="idiff left right">use they might</span> get instantiated completely differently.  E.g.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3207" 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">

3207

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<td class="diff-line-num new_line" data-linenumber="3258" 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">

3258

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<pre style="margin: 0;"> <span id="LC3258" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     f,g :: forall a. a -> _</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3208" 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">

3208

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<td class="diff-line-num new_line" data-linenumber="3259" 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">

3259

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<pre style="margin: 0;"> <span id="LC3259" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     f x = a</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3209" 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">

3209

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3260

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<pre style="margin: 0;"> <span id="LC3260" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     g x = True</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3210" 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">

3210

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<td class="diff-line-num new_line" data-linenumber="3261" 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">

3261

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<pre style="margin: 0;"> <span id="LC3261" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  It's really as if we'd written two distinct signatures.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3211" 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">

3211

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<td class="diff-line-num new_line" data-linenumber="3262" 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">

3262

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<pre style="margin: 0;"> <span id="LC3262" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3212" 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">

3212

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3212" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* Note that we don't make quantified type (forall a. blah) and then</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3213" 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">

3213

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3213" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  instantiate it -- it makes no sense to instantiate a type with</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3214" 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">

3214

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3214" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  wildcards in it.  Rather, tcHsPartialSigType just returns the</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3215" 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">

3215

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3215" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  'a' and the 'blah' separately.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3216" 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">

3216

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3216" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="3217" 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">

3217

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<td class="diff-line-num new_line old" data-linenumber="3263" 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="LC3217" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  Nor, for the same reason, do we push a level in tcHsPartialSigType.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3263" 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">

3263

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<pre style="margin: 0;">+<span id="LC3263" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* Nested foralls. Consider</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3264" 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">

3264

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<pre style="margin: 0;">+<span id="LC3264" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     f :: forall b. (forall a. a -> _) -> b</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3265" 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">

3265

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<pre style="margin: 0;">+<span id="LC3265" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  We do /not/ allow the "_" to be instantiated to 'a'; but we do</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3266" 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">

3266

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<pre style="margin: 0;">+<span id="LC3266" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  (as before) allow it to be instantiated to the (top level) 'b'.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3267" 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">

3267

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<pre style="margin: 0;">+<span id="LC3267" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  Why not?  Because suppose</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3268" 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">

3268

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<pre style="margin: 0;">+<span id="LC3268" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     f x = (x True, x 'c')</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3269" 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">

3269

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<pre style="margin: 0;">+<span id="LC3269" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  We must instantiate that (forall a. a -> _) when typechecking</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3270" 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">

3270

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<pre style="margin: 0;">+<span id="LC3270" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  f's body, so we must know precisely where all the a's are; they</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3271" 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">

3271

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<pre style="margin: 0;">+<span id="LC3271" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  must not be hidden under (filled-in) unification variables!</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3272" 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">

3272

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<pre style="margin: 0;">+<span id="LC3272" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3273" 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">

3273

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<pre style="margin: 0;">+<span id="LC3273" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  We achieve this in the usual way: we push a level at a forall,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="3218" 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="3274" 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="LC3274" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  so now the unification variable for the "_" can't unify with</span></span>

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<pre style="margin: 0;">+<span id="LC3275" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  'a'.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3276" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3277" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* Just as for ordinary signatures, we must zonk the type after</span></span>

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<pre style="margin: 0;">+<span id="LC3278" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  kind-checking it, to ensure that all the nested forall binders can</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3279" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  see their occurrenceds</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3280" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3281" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  Just as for ordinary signatures, this zonk also gets any Refl casts</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3282" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  out of the way of instantiation.  Example: #18008 had</span></span>

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<pre style="margin: 0;">+<span id="LC3283" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">       foo :: (forall a. (Show a => blah) |> Refl) -> _</span></span>

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<pre style="margin: 0;">+<span id="LC3284" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  and that Refl cast messed things up.  See #18062.</span></span>

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<pre style="margin: 0;"> <span id="LC3285" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3286" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Extra-constraint holes in partial type signatures]</span></span>

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<pre style="margin: 0;"> <span id="LC3287" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<br>

</li>

<li id="4f8d5e20ad75b577322cf46f2e146466d905fe43">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#4f8d5e20ad75b577322cf46f2e146466d905fe43"><strong>compiler/typecheck/TcSplice.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">@@ -1645,7 +1645,7 @@ reifyDataCon isGadtDataCon tys dc</td>

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<pre style="margin: 0;"> <span id="LC1645" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- constructors can be declared infix.</span></span>

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<pre style="margin: 0;"> <span id="LC1646" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- See Note [Infix GADT constructors] in TcTyClsDecls.</span></span>

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<pre style="margin: 0;"> <span id="LC1647" class="line" lang="haskell">              <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">dataConIsInfix</span> <span class="n" style="color: #333;">dc</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">isGadtDataCon</span> <span class="o" style="font-weight: 600;">-></span></span>

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<pre style="margin: 0;">-<span id="LC1648" class="line" lang="haskell">                  <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">lengthIs</span><span class="p">`</span> <span class="mi" style="color: #099;">2</span> <span class="p">)</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;">+<span id="LC1648" class="line" lang="haskell">                  <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;"><span class="idiff left right">r_</span>arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">lengthIs</span><span class="p">`</span> <span class="mi" style="color: #099;">2</span> <span class="p">)</span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;"> <span id="LC1649" 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;">r_a1</span><span class="p">,</span> <span class="n" style="color: #333;">r_a2</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">r_arg_tys</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1650" class="line" lang="haskell">                        <span class="p">[</span><span class="n" style="color: #333;">s1</span><span class="p">,</span>   <span class="n" style="color: #333;">s2</span><span class="p">]</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dcdBangs</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1651" class="line" lang="haskell">                  <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">TH</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">InfixC</span> <span class="p">(</span><span class="n" style="color: #333;">s1</span><span class="p">,</span><span class="n" style="color: #333;">r_a1</span><span class="p">)</span> <span class="n" style="color: #333;">name</span> <span class="p">(</span><span class="n" style="color: #333;">s2</span><span class="p">,</span><span class="n" style="color: #333;">r_a2</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="1664" 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="1664" 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">@@ -1664,7 +1664,7 @@ reifyDataCon isGadtDataCon tys dc</td>

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<pre style="margin: 0;"> <span id="LC1664" class="line" lang="haskell">                         <span class="p">{</span> <span class="n" style="color: #333;">cxt</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">reifyCxt</span> <span class="n" style="color: #333;">theta'</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1665" 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="LC1665" class="line" lang="haskell">                         <span class="p">;</span> <span class="n" style="color: #333;">ex_tvs''</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">reifyTyVars</span> <span class="n" style="color: #333;">ex_tvs'</span></span>

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<pre style="margin: 0;"> <span id="LC1666" 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;">TH</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">ForallC</span> <span class="n" style="color: #333;">ex_tvs''</span> <span class="n" style="color: #333;">cxt</span> <span class="n" style="color: #333;">main_con</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="1667" 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="LC1667" class="line" lang="haskell">       <span class="p">;</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">equalLength</span><span class="p">`</span> <span class="n" style="color: #333;">dcdBangs</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1668" 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="LC1667" class="line" lang="haskell">       <span class="p">;</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;"><span class="idiff left right">r_</span>arg_tys</span> <span class="p">`</span><span class="n" style="color: #333;">equalLength</span><span class="p">`</span> <span class="n" style="color: #333;">dcdBangs</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1668" class="line" lang="haskell">         <span class="n" style="color: #333;">ret_con</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1669" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1670" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>

</pre>

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<br>

</li>

<li id="853e3f0b2adba3af1c88bbccec2b53c4c5532e39">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#853e3f0b2adba3af1c88bbccec2b53c4c5532e39"><strong>compiler/utils/FastString.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="531" 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="531" 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">@@ -531,16 +531,22 @@ cmpStringPrefix ptr1 ptr2 len =</td>

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<pre style="margin: 0;"> <span id="LC531" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">memcmp</span> <span class="n" style="color: #333;">ptr1</span> <span class="n" style="color: #333;">ptr2</span> <span class="n" style="color: #333;">len</span></span>

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<pre style="margin: 0;"> <span id="LC532" class="line" lang="haskell">    <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC533" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC534" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC534" class="line" lang="haskell"><span class="n" style="color: #333;">hashStr</span>  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="kt" style="color: #458; font-weight: 600;">Word8</span> <span class="o" style="font-weight: 600;">-></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;">Int</span></span>

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<td class="diff-line-num old_line" data-linenumber="536" 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">

536

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<pre style="margin: 0;"> <span id="LC535" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- use the Addr to produce a hash value between 0 & m (inclusive)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="537" 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">

537

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<pre style="margin: 0;"> <span id="LC536" class="line" lang="haskell"><span class="n" style="color: #333;">hashStr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Ptr</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">loop</span> <span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">#</span> <span class="mi" style="color: #099;">0</span><span class="o" style="font-weight: 600;">#</span></span>

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<pre style="margin: 0;">-<span id="LC538" class="line" lang="haskell">   <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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539

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<pre style="margin: 0;">-<span id="LC539" class="line" lang="haskell">    <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">h</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTrue</span><span class="o" style="font-weight: 600;">#</span> <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;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">h</span></span>

</pre>

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540

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<pre style="margin: 0;">-<span id="LC540" 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="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">h2</span> <span class="p">(</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">+#</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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541

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<pre style="margin: 0;">-<span id="LC541" class="line" lang="haskell">          <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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542

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<pre style="margin: 0;">-<span id="LC542" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ord</span><span class="o" style="font-weight: 600;">#</span> <span class="p">(</span><span class="n" style="color: #333;">indexCharOffAddr</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>

</pre>

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543

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<pre style="margin: 0;">-<span id="LC543" class="line" lang="haskell">            <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">h2</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">h</span> <span class="o" style="font-weight: 600;">*#</span> <span class="mi" style="color: #099;">16777619</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">`</span><span class="n" style="color: #333;">xorI</span><span class="o" style="font-weight: 600;">#</span><span class="p">`</span> <span class="n" style="color: #333;">c</span></span>

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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell">    <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">h</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">isTrue</span><span class="o" style="font-weight: 600;">#</span> <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;">len</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">then</span></span>

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<pre style="margin: 0;">+<span id="LC540" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">I</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">h</span></span>

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<pre style="margin: 0;">+<span id="LC541" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">else</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC542" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span></span>

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<pre style="margin: 0;">+<span id="LC543" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- DO NOT move this let binding! indexCharOffAddr# reads from the</span></span>

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<pre style="margin: 0;">+<span id="LC544" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- pointer so we need to evaluate this based on the length check</span></span>

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<pre style="margin: 0;">+<span id="LC545" class="line" lang="haskell">          <span class="c1" style="color: #998; font-style: italic;">-- above. Not doing this right caused #17909.</span></span>

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<pre style="margin: 0;">+<span id="LC546" class="line" lang="haskell">          <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">c</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ord</span><span class="o" style="font-weight: 600;">#</span> <span class="p">(</span><span class="n" style="color: #333;">indexCharOffAddr</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">#</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC547" class="line" lang="haskell">          <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">h2</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">h</span> <span class="o" style="font-weight: 600;">*#</span> <span class="mi" style="color: #099;">16777619</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span> <span class="p">`</span><span class="n" style="color: #333;">xorI</span><span class="o" style="font-weight: 600;">#</span><span class="p">`</span> <span class="n" style="color: #333;">c</span></span>

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<pre style="margin: 0;">+<span id="LC548" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">in</span></span>

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<pre style="margin: 0;">+<span id="LC549" class="line" lang="haskell">          <span class="n" style="color: #333;">loop</span> <span class="n" style="color: #333;">h2</span> <span class="p">(</span><span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">+#</span> <span class="mi" style="color: #099;">1</span><span class="o" style="font-weight: 600;">#</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC550" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC551" 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="LC552" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Operations</span></span>

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<br>

</li>

<li id="2ffbdc61d9d0e36978f07f62c00c08f33149e335">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#2ffbdc61d9d0e36978f07f62c00c08f33149e335"><strong>rts/Updates.h</strong></a>

<hr>

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">                                                                \</span></span>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    prim_write_barrier;                                         \</span></span>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    OVERWRITING_CLOSURE(p1);                                    \</span></span>

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<pre style="margin: 0;">-<span id="LC53" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    IF_NONMOVING_WRITE_BARRIER_ENABLED {                        \</span></span>

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<pre style="margin: 0;">-<span id="LC54" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      ccall updateRemembSetPushThunk_(BaseReg, p1 "ptr");       \</span></span>

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<pre style="margin: 0;">-<span id="LC55" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    }                                                           \</span></span>

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<pre style="margin: 0;">-<span id="LC56" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    StgInd_indirectee(p1) = p2;                                 \</span></span>

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<pre style="margin: 0;">-<span id="LC57" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    prim_write_barrier;                                         \</span></span>

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<pre style="margin: 0;">-<span id="LC58" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    SET_INFO(p1, stg_BLACKHOLE_info);                           \</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC59" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    LDV_RECORD_CREATE(p1);                                      \</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    bd = Bdescr(p1);                                            \</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC54" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    if (bdescr_gen_no(bd) != 0 :: bits16) {                     \</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="55" 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="LC55" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      IF_NONMOVING_WRITE_BARRIER_ENABLED {                      \</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="56" 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="LC56" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">        ccall updateRemembSetPushThunk_(BaseReg, p1 "ptr");     \</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="57" 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="LC57" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      }                                                         \</span></span>

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<td class="diff-line-num old_line" data-linenumber="62" 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="LC58" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      recordMutableCap(p1, TO_W_(bdescr_gen_no(bd)));           \</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      TICK_UPD_OLD_IND();                                       \</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC64" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      and_then;                                                 \</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    } else {                                                    \</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="66" 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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<td class="diff-line-num new_line" data-linenumber="61" 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="LC61" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      TICK_UPD_NEW_IND();                                       \</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC67" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">      and_then;                                                 \</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="68" 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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<td class="diff-line-num new_line old" data-linenumber="62" 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="LC68" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    }</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="69" 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="LC62" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    }                                                           \</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="69" 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="LC63" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    StgInd_indirectee(p1) = p2;                                 \</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC64" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    prim_write_barrier;                                         \</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC65" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    SET_INFO(p1, stg_BLACKHOLE_info);                           \</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="69" 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="LC66" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    LDV_RECORD_CREATE(p1);                                      \</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC67" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">    and_then;</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC68" class="line" lang="c"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC69" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#else </span><span class="cm" style="color: #998; font-style: italic;">/* !CMINUSMINUS */</span></span>

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<pre style="margin: 0;"> <span id="LC70" class="line" lang="c"></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">@@ -73,28 +72,26 @@ INLINE_HEADER void updateWithIndirection (Capability *cap,</td>

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<pre style="margin: 0;"> <span id="LC72" class="line" lang="c">                                          <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">p1</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC73" class="line" lang="c">                                          <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">p2</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC74" class="line" lang="c"><span class="p">{</span></span>

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<pre style="margin: 0;">-<span id="LC76" class="line" lang="c">    <span class="n" style="color: #333;">bdescr</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">bd</span><span class="p">;</span></span>

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<pre style="margin: 0;">-<span id="LC77" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC75" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span> <span class="p">(</span><span class="n" style="color: #333;">P_</span><span class="p">)</span><span class="n" style="color: #333;">p1</span> <span class="o" style="font-weight: 600;">!=</span> <span class="p">(</span><span class="n" style="color: #333;">P_</span><span class="p">)</span><span class="n" style="color: #333;">p2</span> <span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC76" class="line" lang="c">    <span class="cm" style="color: #998; font-style: italic;">/* not necessarily true: ASSERT( !closure_IND(p1) ); */</span></span>

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<pre style="margin: 0;"> <span id="LC77" class="line" lang="c">    <span class="cm" style="color: #998; font-style: italic;">/* occurs in RaiseAsync.c:raiseAsync() */</span></span>

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<pre style="margin: 0;"> <span id="LC78" class="line" lang="c">    <span class="cm" style="color: #998; font-style: italic;">/* See Note [Heap memory barriers] in SMP.h */</span></span>

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<pre style="margin: 0;"> <span id="LC79" class="line" lang="c">    <span class="n" style="color: #333;">write_barrier</span><span class="p">();</span></span>

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<pre style="margin: 0;">-<span id="LC83" class="line" lang="c">    <span class="n" style="color: #333;">OVERWRITING_CLOSURE</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

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<pre style="margin: 0;">-<span id="LC84" class="line" lang="c">    <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

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<pre style="margin: 0;">-<span id="LC85" class="line" lang="c">        <span class="n" style="color: #333;">updateRemembSetPushThunk</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgThunk</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

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<pre style="margin: 0;">-<span id="LC86" class="line" lang="c">    <span class="p">}</span></span>

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<pre style="margin: 0;">-<span id="LC87" class="line" lang="c">    <span class="p">((</span><span class="n" style="color: #333;">StgInd</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">indirectee</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">p2</span><span class="p">;</span></span>

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<pre style="margin: 0;">-<span id="LC88" class="line" lang="c">    <span class="n" style="color: #333;">write_barrier</span><span class="p">();</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC89" class="line" lang="c">    <span class="n" style="color: #333;">SET_INFO</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_BLACKHOLE_info</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="90" 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">

90

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<td class="diff-line-num new_line old" data-linenumber="80" 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="LC90" class="line" lang="c">    <span class="n" style="color: #333;">LDV_RECORD_CREATE</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="91" 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">

91

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<td class="diff-line-num new_line old" data-linenumber="80" 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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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC91" class="line" lang="c">    <span class="n" style="color: #333;">bd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">Bdescr</span><span class="p">((</span><span class="n" style="color: #333;">StgPtr</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="92" 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="80" 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">

80

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<pre style="margin: 0;">+<span id="LC80" class="line" lang="c">    <span class="n" style="color: #333;">bdescr</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">bd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">Bdescr</span><span class="p">((</span><span class="n" style="color: #333;">StgPtr</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="92" 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">

92

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<td class="diff-line-num new_line" data-linenumber="81" 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">

81

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<pre style="margin: 0;"> <span id="LC81" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;">!=</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="93" 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="82" 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">

82

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC82" class="line" lang="c">      <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

</pre>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="93" 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="83" 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">

83

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC83" class="line" lang="c">          <span class="n" style="color: #333;">updateRemembSetPushThunk</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgThunk</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="93" 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="84" 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">

84

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC84" class="line" lang="c">      <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="93" 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">

93

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<td class="diff-line-num new_line" data-linenumber="85" 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">

85

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<pre style="margin: 0;"> <span id="LC85" class="line" lang="c">        <span class="n" style="color: #333;">recordMutableCap</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">,</span> <span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">bd</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">gen_no</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="94" 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">

94

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<td class="diff-line-num new_line" data-linenumber="86" 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">

86

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<pre style="margin: 0;"> <span id="LC86" class="line" lang="c">        <span class="n" style="color: #333;">TICK_UPD_OLD_IND</span><span class="p">();</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="95" 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">

95

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<td class="diff-line-num new_line" data-linenumber="87" 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">

87

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC87" class="line" lang="c">    <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="96" 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">

96

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<td class="diff-line-num new_line" data-linenumber="88" 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">

88

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<pre style="margin: 0;"> <span id="LC88" class="line" lang="c">        <span class="n" style="color: #333;">TICK_UPD_NEW_IND</span><span class="p">();</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="97" 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">

97

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<td class="diff-line-num new_line" data-linenumber="89" 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">

89

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC89" class="line" lang="c">    <span class="p">}</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="98" 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="90" 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">

90

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC90" class="line" lang="c">    <span class="n" style="color: #333;">OVERWRITING_CLOSURE</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="98" 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="91" 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">

91

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC91" class="line" lang="c">    <span class="p">((</span><span class="n" style="color: #333;">StgInd</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p1</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">indirectee</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">p2</span><span class="p">;</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="98" 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="92" 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">

92

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC92" class="line" lang="c">    <span class="n" style="color: #333;">write_barrier</span><span class="p">();</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="98" 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="93" 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">

93

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC93" class="line" lang="c">    <span class="n" style="color: #333;">SET_INFO</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_BLACKHOLE_info</span><span class="p">);</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="98" 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="94" 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">

94

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<pre style="margin: 0;">+<span id="LC94" class="line" lang="c">    <span class="n" style="color: #333;">LDV_RECORD_CREATE</span><span class="p">(</span><span class="n" style="color: #333;">p1</span><span class="p">);</span></span>

</pre>

</td>

</tr>

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<td class="diff-line-num old_line" data-linenumber="98" 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">

98

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<td class="diff-line-num new_line" data-linenumber="95" 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">

95

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<pre style="margin: 0;"> <span id="LC95" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="99" 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">

99

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<td class="diff-line-num new_line" data-linenumber="96" 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">

96

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC96" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="100" 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">

100

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<td class="diff-line-num new_line" data-linenumber="97" 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">

97

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<pre style="margin: 0;"> <span id="LC97" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif </span><span class="cm" style="color: #998; font-style: italic;">/* CMINUSMINUS */</span></span>

</pre>

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<br>

</li>

<li id="9670354b74fe55079feca82e1510129734b46f4f">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#9670354b74fe55079feca82e1510129734b46f4f"><strong>rts/linker/PEi386.c</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="776" 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="776" 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">@@ -776,12 +776,12 @@ HsPtr addLibrarySearchPath_PEi386(pathchar* dll_path)</td>

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<td class="diff-line-num old_line" data-linenumber="776" 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">

776

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<td class="diff-line-num new_line" data-linenumber="776" 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">

776

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<pre style="margin: 0;"> <span id="LC776" class="line" lang="c">    <span class="n" style="color: #333;">WCHAR</span><span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">abs_path</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">malloc</span><span class="p">(</span><span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">WCHAR</span><span class="p">)</span> <span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">init_buf_size</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="777" 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">

777

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<td class="diff-line-num new_line" data-linenumber="777" 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">

777

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<pre style="margin: 0;"> <span id="LC777" class="line" lang="c">    <span class="n" style="color: #333;">DWORD</span> <span class="n" style="color: #333;">wResult</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">GetFullPathNameW</span><span class="p">(</span><span class="n" style="color: #333;">dll_path</span><span class="p">,</span> <span class="n" style="color: #333;">bufsize</span><span class="p">,</span> <span class="n" style="color: #333;">abs_path</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="778" 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">

778

</td>

<td class="diff-line-num new_line" data-linenumber="778" 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">

778

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<pre style="margin: 0;"> <span id="LC778" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">wResult</span><span class="p">){</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="779" 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">

779

</td>

<td class="diff-line-num new_line old" data-linenumber="779" 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="LC779" class="line" lang="c">        <span class="n" style="color: #333;"><span class="idiff left">sysErrorBelch</span></span><span class="p"><span class="idiff">(</span></span><span class="s" style="color: #d14;"><span class="idiff">"addLibrarySearchPath[GetFullPathNameW]: %"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">PATH_FMT</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">" (Win32 error %lu)"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dll_path</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">GetLastError</span></span><span class="p"><span class="idiff right">(</span>));</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="780" 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="779" 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">

779

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC779" class="line" lang="c">        <span class="n" style="color: #333;"><span class="idiff left">IF_DEBUG</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">linker</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">debugBelch</span></span><span class="p"><span class="idiff">(</span></span><span class="s" style="color: #d14;"><span class="idiff">"addLibrarySearchPath[GetFullPathNameW]: %"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">PATH_FMT</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">" (Win32 error %lu)"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dll_path</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">GetLastError</span></span><span class="p"><span class="idiff right">()</span>));</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="780" 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">

780

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<td class="diff-line-num new_line" data-linenumber="780" 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">

780

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<pre style="margin: 0;"> <span id="LC780" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="781" 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">

781

</td>

<td class="diff-line-num new_line" data-linenumber="781" 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">

781

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<pre style="margin: 0;"> <span id="LC781" class="line" lang="c">    <span class="k" style="font-weight: 600;">else</span> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">wResult</span> <span class="o" style="font-weight: 600;">></span> <span class="n" style="color: #333;">init_buf_size</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="782" 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">

782

</td>

<td class="diff-line-num new_line" data-linenumber="782" 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">

782

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC782" class="line" lang="c">        <span class="n" style="color: #333;">abs_path</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">realloc</span><span class="p">(</span><span class="n" style="color: #333;">abs_path</span><span class="p">,</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">WCHAR</span><span class="p">)</span> <span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">wResult</span><span class="p">);</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="783" 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">

783

</td>

<td class="diff-line-num new_line" data-linenumber="783" 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">

783

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC783" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">GetFullPathNameW</span><span class="p">(</span><span class="n" style="color: #333;">dll_path</span><span class="p">,</span> <span class="n" style="color: #333;">bufsize</span><span class="p">,</span> <span class="n" style="color: #333;">abs_path</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">))</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="784" 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">

784

</td>

<td class="diff-line-num new_line old" data-linenumber="784" 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>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC784" class="line" lang="c">            <span class="n" style="color: #333;"><span class="idiff left">sysErrorBelch</span></span><span class="p"><span class="idiff">(</span></span><span class="s" style="color: #d14;"><span class="idiff">"addLibrarySearchPath[GetFullPathNameW]: %"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">PATH_FMT</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">" (Win32 error %lu)"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dll_path</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">GetLastError</span></span><span class="p"><span class="idiff right">(</span>));</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="785" 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="784" 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">

784

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC784" class="line" lang="c">            <span class="n" style="color: #333;"><span class="idiff left">IF_DEBUG</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">linker</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">debugBelch</span></span><span class="p"><span class="idiff">(</span></span><span class="s" style="color: #d14;"><span class="idiff">"addLibrarySearchPath[GetFullPathNameW]: %"</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">PATH_FMT</span></span><span class="idiff"> </span><span class="s" style="color: #d14;"><span class="idiff">" (Win32 error %lu)"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">dll_path</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">GetLastError</span></span><span class="p"><span class="idiff right">()</span>));</span></span>

</pre>

</td>

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785

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785

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<pre style="margin: 0;"> <span id="LC785" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="786" 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">

786

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<td class="diff-line-num new_line" data-linenumber="786" 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">

786

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<pre style="margin: 0;"> <span id="LC786" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="787" 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">

787

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<td class="diff-line-num new_line" data-linenumber="787" 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">

787

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC787" class="line" lang="c"></span>

</pre>

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<br>

</li>

<li id="ec675bd1dfbb74e562acdc649628789841b48f75">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#ec675bd1dfbb74e562acdc649628789841b48f75"><strong>rts/posix/itimer/Pthread.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="109" 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="109" 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">@@ -109,13 +109,13 @@ static void *itimer_thread_func(void *_handle_tick)</td>

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109

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109

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<pre style="margin: 0;"> <span id="LC109" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="110" 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">

110

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110

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<pre style="margin: 0;"> <span id="LC110" class="line" lang="c">    <span class="n" style="color: #333;">timerfd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">timerfd_create</span><span class="p">(</span><span class="n" style="color: #333;">CLOCK_MONOTONIC</span><span class="p">,</span> <span class="n" style="color: #333;">TFD_CLOEXEC</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="111" 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">

111

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<td class="diff-line-num new_line" data-linenumber="111" 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">

111

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<pre style="margin: 0;"> <span id="LC111" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">timerfd</span> <span class="o" style="font-weight: 600;">==</span> <span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="112" 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">

112

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<td class="diff-line-num new_line old" data-linenumber="112" 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="LC112" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"timerfd_create<span class="idiff left right">"</span></span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="113" 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="112" 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="LC112" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"timerfd_create<span class="idiff left">: %s"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">strerror</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">errno</span></span><span class="p"><span class="idiff right">)</span>);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="113" 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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<td class="diff-line-num new_line" data-linenumber="113" 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="LC113" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="114" 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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<td class="diff-line-num new_line" data-linenumber="114" 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="LC114" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">TFD_CLOEXEC</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="115" 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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<td class="diff-line-num new_line" data-linenumber="115" 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="LC115" class="line" lang="c">        <span class="n" style="color: #333;">fcntl</span><span class="p">(</span><span class="n" style="color: #333;">timerfd</span><span class="p">,</span> <span class="n" style="color: #333;">F_SETFD</span><span class="p">,</span> <span class="n" style="color: #333;">FD_CLOEXEC</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="116" 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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<td class="diff-line-num new_line" data-linenumber="116" 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">

116

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<pre style="margin: 0;"> <span id="LC116" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="117" 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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<td class="diff-line-num new_line" data-linenumber="117" 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="LC117" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">timerfd_settime</span><span class="p">(</span><span class="n" style="color: #333;">timerfd</span><span class="p">,</span> <span class="mi" style="color: #099;">0</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">it</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">))</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="118" 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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<td class="diff-line-num new_line old" data-linenumber="118" 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="LC118" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"timerfd_settime<span class="idiff left right">"</span></span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="119" 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="118" 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="LC118" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"timerfd_settime<span class="idiff left">: %s"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">strerror</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">errno</span></span><span class="p"><span class="idiff right">)</span>);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="119" 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">

119

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<td class="diff-line-num new_line" data-linenumber="119" 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="LC119" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="120" 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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<td class="diff-line-num new_line" data-linenumber="120" 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="LC120" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="121" 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="LC121" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_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="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">@@ -123,7 +123,7 @@ static void *itimer_thread_func(void *_handle_tick)</td>

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<td class="diff-line-num old_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">

123

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<pre style="margin: 0;"> <span id="LC123" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">USE_TIMERFD_FOR_ITIMER</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="124" 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">

124

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<td class="diff-line-num new_line" data-linenumber="124" 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="LC124" class="line" lang="c">            <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">read</span><span class="p">(</span><span class="n" style="color: #333;">timerfd</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">nticks</span><span class="p">,</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">nticks</span><span class="p">))</span> <span class="o" style="font-weight: 600;">!=</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">nticks</span><span class="p">))</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="125" 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">

125

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<td class="diff-line-num new_line" data-linenumber="125" 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="LC125" class="line" lang="c">                <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">errno</span> <span class="o" style="font-weight: 600;">!=</span> <span class="n" style="color: #333;">EINTR</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="126" 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">

126

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<td class="diff-line-num new_line old" data-linenumber="126" 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="LC126" class="line" lang="c">                    <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: read(timerfd) failed<span class="idiff left right">"</span></span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="127" 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="LC126" class="line" lang="c">                    <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: read(timerfd) failed<span class="idiff left">: %s"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">strerror</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">errno</span></span><span class="p"><span class="idiff right">)</span>);</span></span>

</pre>

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127

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<td class="diff-line-num new_line" data-linenumber="127" 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="LC127" class="line" lang="c">                <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="128" 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">

128

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128

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<pre style="margin: 0;"> <span id="LC128" class="line" lang="c">            <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="129" 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">

129

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<td class="diff-line-num new_line" data-linenumber="129" 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="LC129" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="169" 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="169" 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">@@ -169,7 +169,7 @@ initTicker (Time interval, TickProc handle_tick)</td>

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<td class="diff-line-num old_line" data-linenumber="169" 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">

169

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169

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<pre style="margin: 0;"> <span id="LC169" class="line" lang="c">        <span class="n" style="color: #333;">pthread_setname_np</span><span class="p">(</span><span class="kr" style="font-weight: 600;">thread</span><span class="p">,</span> <span class="s" style="color: #d14;">"ghc_ticker"</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="170" 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">

170

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<td class="diff-line-num new_line" data-linenumber="170" 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">

170

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<pre style="margin: 0;"> <span id="LC170" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="171" 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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<td class="diff-line-num new_line" data-linenumber="171" 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="LC171" class="line" lang="c">    <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="172" 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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<td class="diff-line-num new_line old" data-linenumber="172" 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="LC172" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: Failed to spawn thread<span class="idiff left right">"</span></span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="173" 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="LC172" class="line" lang="c">        <span class="n" style="color: #333;">barf</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: Failed to spawn thread<span class="idiff left">: %s"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">strerror</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">errno</span></span><span class="p"><span class="idiff right">)</span>);</span></span>

</pre>

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173

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<td class="diff-line-num new_line" data-linenumber="173" 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="LC173" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="174" 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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<td class="diff-line-num new_line" data-linenumber="174" 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="LC174" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="175" 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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<td class="diff-line-num new_line" data-linenumber="175" 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">

175

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<pre style="margin: 0;"> <span id="LC175" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="203" 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="203" 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">@@ -203,7 +203,7 @@ exitTicker (bool wait)</td>

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<pre style="margin: 0;"> <span id="LC203" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// wait for ticker to terminate if necessary</span></span>

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<pre style="margin: 0;"> <span id="LC204" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">wait</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC205" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">pthread_join</span><span class="p">(</span><span class="kr" style="font-weight: 600;">thread</span><span class="p">,</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">))</span> <span class="p">{</span></span>

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<pre style="margin: 0;">-<span id="LC206" class="line" lang="c">            <span class="n" style="color: #333;">sysErrorBelch</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: Failed to join<span class="idiff left right">"</span></span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC206" class="line" lang="c">            <span class="n" style="color: #333;">sysErrorBelch</span><span class="p">(</span><span class="s" style="color: #d14;">"Itimer: Failed to join<span class="idiff left">: %s"</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">strerror</span></span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">errno</span></span><span class="p"><span class="idiff right">)</span>);</span></span>

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<pre style="margin: 0;"> <span id="LC207" class="line" lang="c">        <span class="p">}</span></span>

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<td class="diff-line-num old_line" data-linenumber="208" 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="LC208" class="line" lang="c">        <span class="n" style="color: #333;">closeMutex</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">mutex</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC209" class="line" lang="c">        <span class="n" style="color: #333;">closeCondition</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">start_cond</span><span class="p">);</span></span>

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<br>

</li>

<li id="a9accda65187a56e0d42dd7fb7a717af6b41d918">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#a9accda65187a56e0d42dd7fb7a717af6b41d918"><strong>rts/sm/BlockAlloc.c</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="233" 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">@@ -233,6 +233,12 @@ initGroup(bdescr *head)</td>

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<pre style="margin: 0;"> <span id="LC233" class="line" lang="c">      <span class="n" style="color: #333;">last</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">blocks</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC234" class="line" lang="c">      <span class="n" style="color: #333;">last</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">link</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">head</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC235" class="line" lang="c">  <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC236" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC237" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if defined(DEBUG)</span></span>

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<pre style="margin: 0;">+<span id="LC238" class="line" lang="c">  <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">=</span><span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">head</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">blocks</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC239" class="line" lang="c">      <span class="n" style="color: #333;">head</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">].</span><span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC240" class="line" lang="c">  <span class="p">}</span></span>

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<td class="diff-line-num new new_line" data-linenumber="241" 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">

241

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<pre style="margin: 0;">+<span id="LC241" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="236" 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">

236

</td>

<td class="diff-line-num new_line" data-linenumber="242" 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">

242

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<pre style="margin: 0;"> <span id="LC242" class="line" lang="c"><span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="237" 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">

237

</td>

<td class="diff-line-num new_line" data-linenumber="243" 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">

243

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<pre style="margin: 0;"> <span id="LC243" class="line" lang="c"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="238" 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">

238

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<td class="diff-line-num new_line" data-linenumber="244" 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">

244

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC244" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if SIZEOF_VOID_P == SIZEOF_LONG</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="792" 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="798" 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">@@ -792,6 +798,12 @@ freeGroup(bdescr *p)</td>

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<td class="diff-line-num old_line" data-linenumber="792" 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">

792

</td>

<td class="diff-line-num new_line" data-linenumber="798" 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">

798

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC798" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="793" 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">

793

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<td class="diff-line-num new_line" data-linenumber="799" 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">

799

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<pre style="margin: 0;"> <span id="LC799" class="line" lang="c">  <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="n" style="color: #333;">p</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">free</span> <span class="o" style="font-weight: 600;">!=</span> <span class="p">(</span><span class="n" style="color: #333;">P_</span><span class="p">)</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="794" 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">

794

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<td class="diff-line-num new_line" data-linenumber="800" 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">

800

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC800" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="801" 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">

801

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<pre style="margin: 0;">+<span id="LC801" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#if defined(DEBUG)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="802" 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">

802

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<pre style="margin: 0;">+<span id="LC802" class="line" lang="c">  <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">=</span><span class="mi" style="color: #099;">0</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">p</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">blocks</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="803" 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">

803

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<pre style="margin: 0;">+<span id="LC803" class="line" lang="c">      <span class="n" style="color: #333;">p</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">].</span><span class="n" style="color: #333;">flags</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="804" 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">

804

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<pre style="margin: 0;">+<span id="LC804" class="line" lang="c">  <span class="p">}</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="805" 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">

805

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC805" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#endif</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="795" 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="806" 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">

806

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC806" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="795" 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">

795

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<td class="diff-line-num new_line" data-linenumber="807" 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">

807

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<pre style="margin: 0;"> <span id="LC807" class="line" lang="c">  <span class="n" style="color: #333;">node</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">p</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">node</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="796" 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">

796

</td>

<td class="diff-line-num new_line" data-linenumber="808" 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">

808

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC808" class="line" lang="c"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="797" 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">

797

</td>

<td class="diff-line-num new_line" data-linenumber="809" 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">

809

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<pre style="margin: 0;"> <span id="LC809" class="line" lang="c">  <span class="n" style="color: #333;">p</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">free</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">;</span>  <span class="cm" style="color: #998; font-style: italic;">/* indicates that this block is free */</span></span>

</pre>

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<br>

</li>

<li id="37a93df244a7789fddf557443b6398d06763e9cc">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#37a93df244a7789fddf557443b6398d06763e9cc"><strong>rts/sm/Evac.c</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="80" 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="80" 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">@@ -80,16 +80,15 @@ alloc_for_copy (uint32_t size, uint32_t gen_no)</td>

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80

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<td class="diff-line-num new_line" data-linenumber="80" 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">

80

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<pre style="margin: 0;"> <span id="LC80" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">evac_gen_no</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="81" 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">

81

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<pre style="margin: 0;"> <span id="LC81" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">eager_promotion</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="82" 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">

82

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<td class="diff-line-num new_line" data-linenumber="82" 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="LC82" class="line" lang="c">            <span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">evac_gen_no</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="83" 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="83" 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="LC83" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">RTS_UNLIKELY</span><span class="p">(</span><span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">useNonmoving</span><span class="p">)</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">deadlock_detect_gc</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="83" 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="84" 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="LC84" class="line" lang="c">            <span class="cm" style="color: #998; font-style: italic;">/* See Note [Deadlock detection under nonmoving collector]. */</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="83" 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="85" 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="LC85" class="line" lang="c">            <span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">oldest_gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">no</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="83" 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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<td class="diff-line-num new_line" data-linenumber="86" 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="LC86" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="84" 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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<td class="diff-line-num new_line" data-linenumber="87" 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="LC87" class="line" lang="c">            <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">failed_to_evac</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">true</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="85" 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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<td class="diff-line-num new_line" data-linenumber="88" 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="LC88" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="86" 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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<td class="diff-line-num new_line" data-linenumber="89" 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="LC89" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="87" 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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<td class="diff-line-num new_line" data-linenumber="90" 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="LC90" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="88" 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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<td class="diff-line-num new_line" data-linenumber="91" 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="LC91" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">RTS_UNLIKELY</span><span class="p">(</span><span class="n" style="color: #333;">RtsFlags</span><span class="p">.</span><span class="n" style="color: #333;">GcFlags</span><span class="p">.</span><span class="n" style="color: #333;">useNonmoving</span><span class="p">))</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="89" 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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<td class="diff-line-num new_line old" data-linenumber="92" 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="LC89" class="line" lang="c">        <span class="cm" style="color: #998; font-style: italic;">/* See Note [Deadlock detection under nonmoving collector]. */</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="92" 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="LC90" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">deadlock_detect_gc</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="91" 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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<td class="diff-line-num new_line old" data-linenumber="92" 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="LC91" class="line" lang="c">            <span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">oldest_gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">no</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="92" 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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<td class="diff-line-num new_line old" data-linenumber="92" 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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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC92" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="93" 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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<td class="diff-line-num new_line" data-linenumber="92" 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="LC92" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gen_no</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">oldest_gen</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">no</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="94" 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">

94

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<td class="diff-line-num new_line" data-linenumber="93" 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="LC93" class="line" lang="c">            <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">copied</span> <span class="o" style="font-weight: 600;">+=</span> <span class="n" style="color: #333;">size</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="95" 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="LC94" class="line" lang="c">            <span class="n" style="color: #333;">to</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonmovingAllocate</span><span class="p">(</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">size</span><span class="p">);</span></span>

</pre>

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<li id="b4a38dad10ba126e05a0b6adc99aa0c2eb742875">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#b4a38dad10ba126e05a0b6adc99aa0c2eb742875"><strong>rts/sm/NonMoving.c</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="228" 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">@@ -228,6 +228,10 @@ Mutex concurrent_coll_finished_lock;</td>

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<pre style="margin: 0;"> <span id="LC228" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Static objects under the nonmoving collector] (Storage.c) describes</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC229" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    treatment of static objects.</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC230" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC231" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - Note [Dirty flags in the non-moving collector] (NonMoving.c) describes</span></span>

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<pre style="margin: 0;">+<span id="LC232" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    how we use the DIRTY flags associated with MUT_VARs and TVARs to improve</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC233" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    barrier efficiency.</span></span>

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<pre style="margin: 0;">+<span id="LC234" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC235" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="236" 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="LC236" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Concurrent non-moving collection]</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC237" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="369" 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">@@ -369,6 +373,7 @@ Mutex concurrent_coll_finished_lock;</td>

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<pre style="margin: 0;"> <span id="LC373" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * approximate due to concurrent collection and ultimately seems more costly</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC374" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * than the problem demands.</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC375" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC376" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC377" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Spark management under the nonmoving collector]</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC378" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC379" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Every GC, both minor and major, prunes the spark queue (using</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">@@ -387,6 +392,88 @@ Mutex concurrent_coll_finished_lock;</td>

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387

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<pre style="margin: 0;"> <span id="LC392" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    BF_EVACUATED flag won't be set on the nursery blocks) and will consequently</span></span>

</pre>

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388

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393

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<pre style="margin: 0;"> <span id="LC393" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    only prune dead sparks living in the non-moving heap.</span></span>

</pre>

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389

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<pre style="margin: 0;"> <span id="LC394" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC395" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC396" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Note [Dirty flags in the non-moving collector]</span></span>

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397

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<pre style="margin: 0;">+<span id="LC397" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="398" 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="LC398" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Some mutable object types (e.g. MUT_VARs, TVARs) have a one-bit dirty flag</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="399" 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">

399

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<pre style="margin: 0;">+<span id="LC399" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * encoded in their info table pointer. The moving collector's uses this flag</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="400" 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">

400

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<pre style="margin: 0;">+<span id="LC400" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * to minimize redundant mut_list entries. The flag is preserves the following</span></span>

</pre>

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401

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<pre style="margin: 0;">+<span id="LC401" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * simple invariant:</span></span>

</pre>

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402

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<pre style="margin: 0;">+<span id="LC402" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="403" 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">

403

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<pre style="margin: 0;">+<span id="LC403" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     An object being marked as dirty implies that the object is on mut_list.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="404" 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">

404

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<pre style="margin: 0;">+<span id="LC404" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="405" 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="LC405" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * This allows a nice optimisation in the write barrier (e.g. dirty_MUT_VAR):</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="406" 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="LC406" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * if we write to an already-dirty object there is no need to</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="407" 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="LC407" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * push it to the mut_list as we know it's already there.</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="408" 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">

408

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<pre style="margin: 0;">+<span id="LC408" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="409" 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">

409

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<pre style="margin: 0;">+<span id="LC409" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * During GC (scavenging) we will then keep track of whether all of the</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="410" 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">

410

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<pre style="margin: 0;">+<span id="LC410" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * object's reference have been promoted. If so we can mark the object as clean.</span></span>

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<pre style="margin: 0;">+<span id="LC411" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * If not then we re-add it to mut_list and mark it as dirty.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC412" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC413" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * In the non-moving collector we use the same dirty flag to implement a</span></span>

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<pre style="margin: 0;">+<span id="LC414" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * related optimisation on the non-moving write barrier: Specifically, the</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC415" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * snapshot invariant only requires that the non-moving write barrier applies</span></span>

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<pre style="margin: 0;">+<span id="LC416" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * to the *first* mutation to an object after collection begins. To achieve this,</span></span>

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<pre style="margin: 0;">+<span id="LC417" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * we impose the following invariant:</span></span>

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<pre style="margin: 0;">+<span id="LC418" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC419" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     An object being marked as dirty implies that all of its fields are on</span></span>

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<pre style="margin: 0;">+<span id="LC420" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *     the mark queue (or, equivalently, update remembered set).</span></span>

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<pre style="margin: 0;">+<span id="LC421" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC422" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * With this guarantee we can safely make the the write barriers dirty objects</span></span>

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<pre style="margin: 0;">+<span id="LC423" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * no-ops. We perform this optimisation for the following object types:</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC424" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC425" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - MVAR</span></span>

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<pre style="margin: 0;">+<span id="LC426" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - TVAR</span></span>

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<pre style="margin: 0;">+<span id="LC427" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  - MUT_VAR</span></span>

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<pre style="margin: 0;">+<span id="LC428" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC429" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * However, maintaining this invariant requires great care. For instance,</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC430" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * consider the case of an MVar (which has two pointer fields) before</span></span>

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<pre style="margin: 0;">+<span id="LC431" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * preparatory collection:</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC432" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC433" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    Non-moving heap     ┊      Moving heap</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="434" 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">

434

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<pre style="margin: 0;">+<span id="LC434" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *         gen 1          ┊         gen 0</span></span>

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<pre style="margin: 0;">+<span id="LC435" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  ──────────────────────┼────────────────────────────────</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC436" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC437" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *         MVAR A  ────────────────→ X</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="438" 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">

438

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<pre style="margin: 0;">+<span id="LC438" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *        (dirty)  ───────────╮</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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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439

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<pre style="margin: 0;">+<span id="LC439" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊   ╰────→ Y</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="LC440" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊          │</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC441" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊          │</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC442" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           ╭───────────────────────╯</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC443" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           │            ┊</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC444" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           ↓            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="445" 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="LC445" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           Z            ┊</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC446" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="LC447" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="448" 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="LC448" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * During the preparatory collection we promote Y to the nonmoving heap but</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC449" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * fail to promote X. Since the failed_to_evac field is conservative (being set</span></span>

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<pre style="margin: 0;">+<span id="LC450" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * if *any* of the fields are not promoted), this gives us:</span></span>

</pre>

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451

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<pre style="margin: 0;">+<span id="LC451" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="452" 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">

452

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<pre style="margin: 0;">+<span id="LC452" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *    Non-moving heap     ┊      Moving heap</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="453" 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">

453

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC453" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *         gen 1          ┊         gen 0</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="454" 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">

454

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<pre style="margin: 0;">+<span id="LC454" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *  ──────────────────────┼────────────────────────────────</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="455" 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">

455

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<pre style="margin: 0;">+<span id="LC455" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="456" 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">

456

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<pre style="margin: 0;">+<span id="LC456" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *         MVAR A  ────────────────→ X</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="457" 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">

457

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<pre style="margin: 0;">+<span id="LC457" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *        (dirty)         ┊</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="458" 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">

458

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<pre style="margin: 0;">+<span id="LC458" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           │            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="459" 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">

459

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<pre style="margin: 0;">+<span id="LC459" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           │            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="460" 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">

460

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<pre style="margin: 0;">+<span id="LC460" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           ↓            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="461" 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">

461

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<pre style="margin: 0;">+<span id="LC461" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           Y            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="462" 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">

462

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<pre style="margin: 0;">+<span id="LC462" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           │            ┊</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="463" 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">

463

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<pre style="margin: 0;">+<span id="LC463" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           │            ┊</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="464" 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">

464

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<pre style="margin: 0;">+<span id="LC464" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           ↓            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="465" 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">

465

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<pre style="margin: 0;">+<span id="LC465" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *           Z            ┊</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="466" 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">

466

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<pre style="margin: 0;">+<span id="LC466" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *                        ┊</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="467" 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">

467

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<pre style="margin: 0;">+<span id="LC467" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="468" 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">

468

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC468" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * This is bad. When we resume mutation a mutator may mutate MVAR A; since it's</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="469" 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">

469

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC469" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * already dirty we would fail to add Y to the update remembered set, breaking the</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="390" 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="470" 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">

470

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<pre style="margin: 0;">+<span id="LC470" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * snapshot invariant and potentially losing track of the liveness of Z.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC471" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;">+<span id="LC472" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * To avoid this nonmovingScavengeOne we eagerly pushes the values of the</span></span>

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<pre style="margin: 0;">+<span id="LC473" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * fields of all objects which it fails to evacuate (e.g. MVAR A) to the update</span></span>

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<pre style="margin: 0;">+<span id="LC474" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * remembered set during the preparatory GC. This allows us to safely skip the</span></span>

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<td class="diff-line-num new new_line" data-linenumber="475" 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="LC475" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * non-moving write barrier without jeopardizing the snapshot invariant.</span></span>

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<pre style="margin: 0;">+<span id="LC476" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>

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<pre style="margin: 0;"> <span id="LC477" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>

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<pre style="margin: 0;"> <span id="LC478" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC479" class="line" lang="c"><span class="n" style="color: #333;">memcount</span> <span class="n" style="color: #333;">nonmoving_live_words</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>

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<br>

</li>

<li id="4f5ba3ce18ccc17ad367193f379aa61f4c9180a0">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#4f5ba3ce18ccc17ad367193f379aa61f4c9180a0"><strong>rts/sm/NonMovingMark.c</strong></a>

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<pre style="margin: 0;"> <span id="LC27" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "sm/Storage.h"</span></span>

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<pre style="margin: 0;"> <span id="LC28" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "CNF.h"</span></span>

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<pre style="margin: 0;"> <span id="LC29" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="n" style="color: #333;">bool</span> <span class="nf" style="color: #900; font-weight: 600;">check_in_nonmoving_heap</span><span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">p</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC31" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="nf" style="color: #900; font-weight: 600;">mark_closure</span> <span class="p">(</span><span class="n" style="color: #333;">MarkQueue</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">p</span><span class="p">,</span> <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">origin</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC32" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="nf" style="color: #900; font-weight: 600;">mark_tso</span> <span class="p">(</span><span class="n" style="color: #333;">MarkQueue</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="n" style="color: #333;">StgTSO</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">tso</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC33" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="nf" style="color: #900; font-weight: 600;">mark_stack</span> <span class="p">(</span><span class="n" style="color: #333;">MarkQueue</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="n" style="color: #333;">StgStack</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">stack</span><span class="p">);</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="450" 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="451" 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">@@ -450,10 +451,17 @@ push (MarkQueue *q, const MarkQueueEnt *ent)</td>

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<pre style="margin: 0;"> <span id="LC451" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">void</span></span>

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<pre style="margin: 0;"> <span id="LC452" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">markQueuePushClosureGC</span> <span class="p">(</span><span class="n" style="color: #333;">MarkQueue</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">q</span><span class="p">,</span> <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">p</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC453" class="line" lang="c"><span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC454" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">check_in_nonmoving_heap</span><span class="p">(</span><span class="n" style="color: #333;">p</span><span class="p">))</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC455" class="line" lang="c">        <span class="k" style="font-weight: 600;">return</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC456" class="line" lang="c">    <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC457" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC458" class="line" lang="c">    <span class="cm" style="color: #998; font-style: italic;">/* We should not make it here if we are doing a deadlock detect GC.</span></span>

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<pre style="margin: 0;"> <span id="LC459" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">     * See Note [Deadlock detection under nonmoving collector].</span></span>

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<pre style="margin: 0;">+<span id="LC460" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">     * This is actually no longer true due to call in nonmovingScavengeOne</span></span>

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<pre style="margin: 0;">+<span id="LC461" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">     * introduced due to Note [Dirty flags in the non-moving collector]</span></span>

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<pre style="margin: 0;">+<span id="LC462" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">     * (see NonMoving.c).</span></span>

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<pre style="margin: 0;"> <span id="LC463" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">     */</span></span>

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<pre style="margin: 0;">-<span id="LC456" class="line" lang="c">    <span class="n" style="color: #333;">ASSERT</span><span class="p">(</span><span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">deadlock_detect_gc</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC464" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;"><span class="idiff left right">//</span>ASSERT(!deadlock_detect_gc);</span></span>

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<pre style="margin: 0;"> <span id="LC465" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC466" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// Are we at the end of the block?</span></span>

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<pre style="margin: 0;"> <span id="LC467" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">q</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">top</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">head</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">MARK_QUEUE_BLOCK_ENTRIES</span><span class="p">)</span> <span class="p">{</span></span>

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<br>

</li>

<li id="7893c76945f74c60b62878fa12bb5de75b8e1340">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#7893c76945f74c60b62878fa12bb5de75b8e1340"><strong>rts/sm/NonMovingScav.c</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">@@ -31,6 +31,11 @@ nonmovingScavengeOne (StgClosure *q)</td>

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<pre style="margin: 0;"> <span id="LC31" class="line" lang="c">        <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">eager_promotion</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">saved_eager_promotion</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC32" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">failed_to_evac</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC33" class="line" lang="c">            <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MVAR_DIRTY_info</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC35" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

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<pre style="margin: 0;">+<span id="LC36" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">head</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC37" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">tail</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC38" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">value</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC39" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC40" class="line" lang="c">            <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MVAR_CLEAN_info</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC41" class="line" lang="c">        <span class="p">}</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="46" 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">@@ -46,6 +51,10 @@ nonmovingScavengeOne (StgClosure *q)</td>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="c">        <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">eager_promotion</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">saved_eager_promotion</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">failed_to_evac</span><span class="p">)</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="c">            <span class="n" style="color: #333;">tvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_TVAR_DIRTY_info</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="c"></span>

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<pre style="margin: 0;">+<span id="LC55" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">tvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">current_value</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">tvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">first_watch_queue_entry</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC58" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

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<pre style="margin: 0;"> <span id="LC59" class="line" lang="c">            <span class="n" style="color: #333;">tvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_TVAR_CLEAN_info</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="c">        <span class="p">}</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="160" 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="169" 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">@@ -160,16 +169,21 @@ nonmovingScavengeOne (StgClosure *q)</td>

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<pre style="margin: 0;"> <span id="LC169" class="line" lang="c">    <span class="p">}</span></span>

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<pre style="margin: 0;"> <span id="LC170" class="line" lang="c"></span>

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<pre style="margin: 0;"> <span id="LC171" class="line" lang="c">    <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">MUT_VAR_CLEAN</span><span class="p">:</span></span>

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<pre style="margin: 0;">-<span id="LC163" class="line" lang="c">    <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">MUT_VAR_DIRTY</span><span class="p">:</span></span>

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<pre style="margin: 0;">+<span id="LC172" class="line" lang="c">    <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">MUT_VAR_DIRTY</span><span class="p">:</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC173" class="line" lang="c">        <span class="n" style="color: #333;">StgMutVar</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">mv</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgMutVar</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">p</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC174" class="line" lang="c">        <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">eager_promotion</span> <span class="o" style="font-weight: 600;">=</span> <span class="nb" style="color: #0086b3;">false</span><span class="p">;</span></span>

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<pre style="margin: 0;">-<span id="LC165" class="line" lang="c">        <span class="n" style="color: #333;">evacuate</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="p"><span class="idiff left">((</span></span><span class="n" style="color: #333;"><span class="idiff">StgMutVar</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">*</span></span><span class="p"><span class="idiff">)</span></span><span class="n" style="color: #333;"><span class="idiff">p</span></span><span class="p"><span class="idiff right">)</span></span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">var</span><span class="p">);</span></span>

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<pre style="margin: 0;">+<span id="LC175" class="line" lang="c">        <span class="n" style="color: #333;">evacuate</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;"><span class="idiff left right">mv</span></span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">var</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC176" class="line" lang="c">        <span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">eager_promotion</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">saved_eager_promotion</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC177" class="line" lang="c">        <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">failed_to_evac</span><span class="p">)</span> <span class="p">{</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC178" class="line" lang="c">            <span class="p">((</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">q</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MUT_VAR_DIRTY_info</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="169" 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="179" 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="LC179" class="line" lang="c"></span>

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<td class="diff-line-num new old_line" data-linenumber="169" 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="180" 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="LC180" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC181" class="line" lang="c">            <span class="n" style="color: #333;">markQueuePushClosureGC</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">gct</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">cap</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">upd_rem_set</span><span class="p">.</span><span class="n" style="color: #333;">queue</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mv</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">var</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC182" class="line" lang="c">        <span class="p">}</span> <span class="k" style="font-weight: 600;">else</span> <span class="p">{</span></span>

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<td class="diff-line-num old_line" data-linenumber="170" 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="LC183" class="line" lang="c">            <span class="p">((</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">q</span><span class="p">)</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MUT_VAR_CLEAN_info</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC184" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="172" 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="LC185" class="line" lang="c">        <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>

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<pre style="margin: 0;">+<span id="LC186" class="line" lang="c">    <span class="p">}</span></span>

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<pre style="margin: 0;"> <span id="LC187" class="line" lang="c"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="174" 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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<td class="diff-line-num new_line" data-linenumber="188" 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="LC188" class="line" lang="c">    <span class="k" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">BLOCKING_QUEUE</span><span class="p">:</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC189" class="line" lang="c">    <span class="p">{</span></span>

</pre>

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<br>

</li>

<li id="0bfe9d4217bccddd6b00d2d6a5e56e7de4c86273">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#0bfe9d4217bccddd6b00d2d6a5e56e7de4c86273"><strong>rts/sm/Storage.c</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1206" 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="1206" 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">@@ -1206,6 +1206,7 @@ dirty_MUT_VAR(StgRegTable *reg, StgMutVar *mvar, StgClosure *old)</td>

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<pre style="margin: 0;"> <span id="LC1206" class="line" lang="c">        <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_MUT_VAR_DIRTY_info</span><span class="p">;</span></span>

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<pre style="margin: 0;"> <span id="LC1207" class="line" lang="c">        <span class="n" style="color: #333;">recordClosureMutated</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mvar</span><span class="p">);</span></span>

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<pre style="margin: 0;"> <span id="LC1208" class="line" lang="c">        <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

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<pre style="margin: 0;">+<span id="LC1209" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// See Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC1210" class="line" lang="c">            <span class="n" style="color: #333;">updateRemembSetPushClosure_</span><span class="p">(</span><span class="n" style="color: #333;">reg</span><span class="p">,</span> <span class="n" style="color: #333;">old</span><span class="p">);</span></span>

</pre>

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1210

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<td class="diff-line-num new_line" data-linenumber="1211" 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">

1211

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<pre style="margin: 0;"> <span id="LC1211" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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1211

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<td class="diff-line-num new_line" data-linenumber="1212" 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">

1212

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<pre style="margin: 0;"> <span id="LC1212" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1228" 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="1229" 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">@@ -1228,6 +1229,7 @@ dirty_TVAR(Capability *cap, StgTVar *p,</td>

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1228

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<td class="diff-line-num new_line" data-linenumber="1229" 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">

1229

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<pre style="margin: 0;"> <span id="LC1229" class="line" lang="c">        <span class="n" style="color: #333;">p</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">stg_TVAR_DIRTY_info</span><span class="p">;</span></span>

</pre>

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1229

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<td class="diff-line-num new_line" data-linenumber="1230" 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">

1230

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<pre style="margin: 0;"> <span id="LC1230" class="line" lang="c">        <span class="n" style="color: #333;">recordClosureMutated</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,(</span><span class="n" style="color: #333;">StgClosure</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">p</span><span class="p">);</span></span>

</pre>

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1230

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<td class="diff-line-num new_line" data-linenumber="1231" 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">

1231

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<pre style="margin: 0;"> <span id="LC1231" class="line" lang="c">        <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1231" 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="1232" 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">

1232

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<pre style="margin: 0;">+<span id="LC1232" class="line" lang="c">            <span class="c1" style="color: #998; font-style: italic;">// See Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="1233" 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">

1233

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<pre style="margin: 0;"> <span id="LC1233" class="line" lang="c">            <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">old</span><span class="p">);</span></span>

</pre>

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1232

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<td class="diff-line-num new_line" data-linenumber="1234" 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">

1234

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<pre style="margin: 0;"> <span id="LC1234" class="line" lang="c">        <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1233" 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">

1233

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<td class="diff-line-num new_line" data-linenumber="1235" 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">

1235

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<pre style="margin: 0;"> <span id="LC1235" class="line" lang="c">    <span class="p">}</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1309" 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="1311" 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">@@ -1309,6 +1311,7 @@ update_MVAR(StgRegTable *reg, StgClosure *p, StgClosure *old_val)</td>

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1309

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<td class="diff-line-num new_line" data-linenumber="1311" 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">

1311

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<pre style="margin: 0;"> <span id="LC1311" class="line" lang="c"><span class="p">{</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1310" 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">

1310

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<td class="diff-line-num new_line" data-linenumber="1312" 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">

1312

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<pre style="margin: 0;"> <span id="LC1312" class="line" lang="c">    <span class="n" style="color: #333;">Capability</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">cap</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">regTableToCapability</span><span class="p">(</span><span class="n" style="color: #333;">reg</span><span class="p">);</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1311" 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">

1311

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<td class="diff-line-num new_line" data-linenumber="1313" 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">

1313

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<pre style="margin: 0;"> <span id="LC1313" class="line" lang="c">    <span class="n" style="color: #333;">IF_NONMOVING_WRITE_BARRIER_ENABLED</span> <span class="p">{</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="1312" 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="1314" 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">

1314

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<pre style="margin: 0;">+<span id="LC1314" class="line" lang="c">        <span class="c1" style="color: #998; font-style: italic;">// See Note [Dirty flags in the non-moving collector] in NonMoving.c</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1312" 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">

1312

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<td class="diff-line-num new_line" data-linenumber="1315" 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">

1315

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<pre style="margin: 0;"> <span id="LC1315" class="line" lang="c">        <span class="n" style="color: #333;">StgMVar</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">mvar</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgMVar</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">p</span><span class="p">;</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1313" 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">

1313

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<td class="diff-line-num new_line" data-linenumber="1316" 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">

1316

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<pre style="margin: 0;"> <span id="LC1316" class="line" lang="c">        <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="n" style="color: #333;">old_val</span><span class="p">);</span></span>

</pre>

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1314

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<td class="diff-line-num new_line" data-linenumber="1317" 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">

1317

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<pre style="margin: 0;"> <span id="LC1317" class="line" lang="c">        <span class="n" style="color: #333;">updateRemembSetPushClosure</span><span class="p">(</span><span class="n" style="color: #333;">cap</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span> <span class="n" style="color: #333;">mvar</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">head</span><span class="p">);</span></span>

</pre>

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<li id="858c5afd22318ffad6c8fd21ea982b647d29bc6b">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#858c5afd22318ffad6c8fd21ea982b647d29bc6b"><strong>testsuite/tests/overloadedrecflds/should_fail/T17965.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 DuplicateRecordFields #-}</span></span>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="n" style="color: #333;">main</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="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">Record</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;">Record</span> <span class="p">{</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="p">}</span></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 class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span></pre>

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<li id="114391f4f650386dffeead70a2b604903de8ff0e">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#114391f4f650386dffeead70a2b604903de8ff0e"><strong>testsuite/tests/overloadedrecflds/should_fail/T17965.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">T17965.hs:4:17: error:</span>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    Multiple declarations of ‘f’</span>

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">    Declared at: T17965.hs:3:29</span>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">                 T17965.hs:4:17</span></pre>

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<li id="a00c124cf8da637072ea4d1a5c4f7999c79aa4aa">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#a00c124cf8da637072ea4d1a5c4f7999c79aa4aa"><strong>testsuite/tests/overloadedrecflds/should_fail/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="32" 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">@@ -32,3 +32,4 @@ test('hasfieldfail03', normal, compile_fail, [''])</td>

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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;">T14953</span><span class="p">',</span> <span class="p">[</span><span class="nv" style="color: #008080;">extra_files</span><span class="p">(['</span><span class="s1" style="color: #d14;">T14953_A.hs</span><span class="p">',</span> <span class="p">'</span><span class="s1" style="color: #d14;">T14953_B.hs</span><span class="p">'])],</span></span>

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<pre style="margin: 0;"> <span id="LC33" class="line" lang="perl">     <span class="nv" style="color: #008080;">multimod_compile_fail</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T14953</span><span class="p">',</span> <span class="p">''])</span></span>

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<pre style="margin: 0;"> <span id="LC34" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">DuplicateExports</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="LC35" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17965</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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<li id="82f05d8af401750ee96408feb631581681a501eb">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#82f05d8af401750ee96408feb631581681a501eb"><strong>testsuite/tests/partial-sigs/should_compile/T18008.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>

</pre>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE PartialTypeSignatures #-}</span></span>

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3

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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;">Bug</span> <span class="kr" style="font-weight: 600;">where</span></span>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" 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="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">Show</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></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;">String</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">_</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">s</span> <span class="nb" style="color: #0086b3;">()</span></span>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"></span></pre>

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<br>

</li>

<li id="8b2d3c7a8cc9e6429a7ecff50ba44d0dfa7ca844">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#8b2d3c7a8cc9e6429a7ecff50ba44d0dfa7ca844"><strong>testsuite/tests/partial-sigs/should_compile/T18008.stderr</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T18008.hs:5:43: warning: [-Wpartial-type-signatures (in -Wdefault)]</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    • Found type wildcard ‘_’ standing for ‘String’</span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="plaintext">    • In the type ‘(forall a. Show a => a -> String) -> _’</span>

</pre>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="plaintext">      In the type signature: f :: (forall a. Show a => a -> String) -> _</span></pre>

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<br>

</li>

<li id="638bf502d5c9ded68b185325d908464f7da3dcac">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#638bf502d5c9ded68b185325d908464f7da3dcac"><strong>testsuite/tests/partial-sigs/should_compile/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="95" 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="95" 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">@@ -95,3 +95,4 @@ test('T16334', normal, compile, [''])</td>

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<pre style="margin: 0;"> <span id="LC95" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16728</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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96

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96

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<pre style="margin: 0;"> <span id="LC96" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16728a</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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<pre style="margin: 0;"> <span id="LC97" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16728b</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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<pre style="margin: 0;">+<span id="LC98" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18008</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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</li>

<li id="04b9f675e37d99fa44409acbc392b8bf28ea2ec0">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#04b9f675e37d99fa44409acbc392b8bf28ea2ec0"><strong>testsuite/tests/th/T17305.hs</strong></a>

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<td class="diff-line-num new new_line" data-linenumber="1" 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">

1

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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 GADTs #-}</span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TemplateHaskell #-}</span></span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies #-}</span></span>

</pre>

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4

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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;">T17305</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Language.Haskell.TH</span> <span class="k" style="font-weight: 600;">hiding</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">System.IO</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="n" style="color: #333;">a</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</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;">Type</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">MkFoo</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Foo</span> <span class="n" style="color: #333;">a</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="o" style="font-weight: 600;">$</span><span class="p">(</span><span class="kr" style="font-weight: 600;">do</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">reify</span> <span class="sc" style="color: #d14;">''</span><span class="err" style="color: #a61717; background-color: #e3d2d2;">F</span><span class="n" style="color: #333;">oo</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell">     <span class="n" style="color: #333;">runIO</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">hPutStrLn</span> <span class="n" style="color: #333;">stderr</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">pprint</span> <span class="n" style="color: #333;">i</span></span>

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell">     <span class="n" style="color: #333;">pure</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span></pre>

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</li>

<li id="fa631abd913250a1b4df535616fda34fc1a6f300">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#fa631abd913250a1b4df535616fda34fc1a6f300"><strong>testsuite/tests/th/T17305.stderr</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext">data family T17305.Foo (a_0 :: *) :: *</span>

</pre>

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">data instance T17305.Foo where</span>

</pre>

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    T17305.MkFoo :: forall (a_1 :: *) . T17305.Foo a_1</span></pre>

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<br>

</li>

<li id="6f885f60b8c0fea6b94dd73a67d02212eedb4498">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#6f885f60b8c0fea6b94dd73a67d02212eedb4498"><strong>testsuite/tests/th/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">@@ -489,6 +489,7 @@ test('T16980a', expect_broken(16980), compile_fail, [''])</td>

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<pre style="margin: 0;"> <span id="LC489" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17270a</span><span class="p">',</span> <span class="nv" style="color: #008080;">extra_files</span><span class="p">(['</span><span class="s1" style="color: #d14;">T17270.hs</span><span class="p">']),</span> <span class="nv" style="color: #008080;">multimod_compile</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T17270</span><span class="p">',</span> <span class="p">'</span><span class="s1" style="color: #d14;">-v0</span><span class="p">'])</span></span>

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<pre style="margin: 0;"> <span id="LC490" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17270b</span><span class="p">',</span> <span class="nv" style="color: #008080;">extra_files</span><span class="p">(['</span><span class="s1" style="color: #d14;">T17270.hs</span><span class="p">']),</span> <span class="nv" style="color: #008080;">multimod_compile</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T17270</span><span class="p">',</span> <span class="p">'</span><span class="s1" style="color: #d14;">-fenable-th-splice-warnings -v0</span><span class="p">'])</span></span>

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<pre style="margin: 0;"> <span id="LC491" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17296</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 class="s1" style="color: #d14;">-v0</span><span class="p">'])</span></span>

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<pre style="margin: 0;">+<span id="LC492" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17305</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 class="s1" style="color: #d14;">-v0</span><span class="p">'])</span></span>

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<pre style="margin: 0;"> <span id="LC493" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17380</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="LC494" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17394</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 class="s1" style="color: #d14;">-v0 -ddump-splices -dsuppress-uniques</span><span class="p">'])</span></span>

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<pre style="margin: 0;"> <span id="LC495" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17379a</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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</li>

<li id="f7800ccc4b0837a02927d7feb0913cb8e0ce9d3b">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#f7800ccc4b0837a02927d7feb0913cb8e0ce9d3b"><strong>testsuite/tests/typecheck/should_compile/T17792.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 TypeApplications #-}</span></span>

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2

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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 -fdefer-type-errors #-}</span></span>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>

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4

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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;">T17792</span> <span class="kr" style="font-weight: 600;">where</span></span>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"></span>

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6

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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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7

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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="n" style="color: #333;">a</span></span>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>

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9

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<pre style="margin: 0;">+<span id="LC9" 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="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell">  <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">notInScope</span> <span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">Word</span></span></pre>

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<li id="836434727ded20c6501987762cedb94bbb7d4ce9">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#836434727ded20c6501987762cedb94bbb7d4ce9"><strong>testsuite/tests/typecheck/should_compile/T17792.stderr</strong></a>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="plaintext"></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T17792.hs:10:7: warning: [-Wdeferred-out-of-scope-variables (in -Wdefault)]</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    Variable not in scope: notInScope :: Bool</span></pre>

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<br>

</li>

<li id="34fe7bf0e6fbf60effb28393399ba68666593909">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#34fe7bf0e6fbf60effb28393399ba68666593909"><strong>testsuite/tests/typecheck/should_compile/all.T</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="693" 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="693" 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">@@ -693,3 +693,4 @@ test('T17202', expect_broken(17202), compile, [''])</td>

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<td class="diff-line-num old_line" data-linenumber="693" 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">

693

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<td class="diff-line-num new_line" data-linenumber="693" 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">

693

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<pre style="margin: 0;"> <span id="LC693" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T15839a</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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<td class="diff-line-num old_line" data-linenumber="694" 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">

694

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<td class="diff-line-num new_line" data-linenumber="694" 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">

694

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<pre style="margin: 0;"> <span id="LC694" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T15839b</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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<td class="diff-line-num old_line" data-linenumber="695" 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">

695

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<td class="diff-line-num new_line" data-linenumber="695" 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">

695

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<pre style="margin: 0;"> <span id="LC695" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17343</span><span class="p">',</span> <span class="nv" style="color: #008080;">exit_code</span><span class="p">(</span><span class="mi" style="color: #099;">1</span><span class="p">),</span> <span class="nv" style="color: #008080;">compile_and_run</span><span class="p">,</span> <span class="p">[''])</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="696" 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">

696

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<pre style="margin: 0;">+<span id="LC696" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T17792</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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</li>

<li id="ace0b40479f1f32a8ee24b91dac8a666e610d0d9">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/29ca4c5121f1b1b08417bc6b87bc7915a20fdd42...2b7c13267aaec9d2b3e2c0ad94ad343993e386d1#ace0b40479f1f32a8ee24b91dac8a666e610d0d9"><strong>testsuite/tests/typecheck/should_fail/T13834.stderr</strong></a>

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1

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<td class="diff-line-num new_line" data-linenumber="1" 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">

1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T13834.hs:5:7: error: Variable not in scope: notInScope</span></pre>

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<td class="diff-line-num new new_line" data-linenumber="2" 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">

2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T13834.hs:5:7:</span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="plaintext">    Variable not in scope: notInScope :: Bool -> t</span></pre>

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