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<h3>
Simon Peyton Jones pushed to branch wip/spj-wibbles
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/318bb17c9d3fbbe68eff706c38eb8e653cea3d83">318bb17c</a></strong>
<div>
<span>by Oleg Grenrus</span>
<i>at 2020-07-28T20:54:13-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix typo in haddock
Spotted by `vilpan` on `#haskell`
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/39c89862161bf488a6aca9372cbb67690f436ce7">39c89862</a></strong>
<div>
<span>by Sergei Trofimovich</span>
<i>at 2020-07-28T20:54:50-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">ghc/mk: don't build gmp packages for BIGNUM_BACKEND=native
Before this change make-based `BIGNUM_BACKEND=native` build was failing as:
```
x86_64-pc-linux-gnu-gcc: error: libraries/ghc-bignum/gmp/objs/*.o: No such file or directory
```
This happens because ghc.mk was pulling in gmp-dependent
ghc-bignum library unconditionally. The change avoid building
ghc-bignum.
Bug: https://gitlab.haskell.org/ghc/ghc/-/issues/18437
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4f7cb81ba6c3e80245bec256eeb1bbbc82a9a74c">4f7cb81b</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-07-29T08:17:12+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove an incorrect WARN in extendLocalRdrEnv
I noticed this warning going off, and discovered that it's
really fine. This small patch removes the warning, and docments
what is going on.
</pre>
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<h4>4 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#cfa41b5649933e5b12f7796e9d49b9dd6a0bc59f">
compiler/GHC/Rename/Pat.hs
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<li class="file-stats">
<a href="#03e77c5a7f093768fb8c3be51f8c4ece06b78463">
compiler/GHC/Types/Name/Reader.hs
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<li class="file-stats">
<a href="#8bdb62b981f38737157a853655e494433eea6796">
ghc.mk
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<li class="file-stats">
<a href="#36b8946721cfafb20918a66b3ffb21b3a4c37935">
libraries/base/GHC/IO.hs
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<h4>Changes:</h4>
<li id="cfa41b5649933e5b12f7796e9d49b9dd6a0bc59f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/aecd7ed0a6c5e5640fb68b7bde505c2114db37ac...4f7cb81ba6c3e80245bec256eeb1bbbc82a9a74c#cfa41b5649933e5b12f7796e9d49b9dd6a0bc59f"><strong>compiler/GHC/Rename/Pat.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -236,19 +236,30 @@ newPatName (LetMk is_top fix_env) rdr_name</td>
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<pre style="margin: 0;"> <span id="LC236" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">is_top</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;"> <span id="LC237" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">NotTopLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newLocalBndrRn</span> <span class="n" style="color: #333;">rdr_name</span></span>
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<pre style="margin: 0;"> <span id="LC238" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TopLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">newTopSrcBinder</span> <span class="n" style="color: #333;">rdr_name</span></span>
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<pre style="margin: 0;">-<span id="LC239" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">bindLocalNames</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span> <span class="c1" style="color: #998; font-style: italic;">-- Do *not* use bindLocalNameFV here</span></span>
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<pre style="margin: 0;">-<span id="LC240" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [View pattern usage]</span></span>
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">bindLocalNames</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC240" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Do *not* use bindLocalNameFV here;</span></span>
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- see Note [View pattern usage]</span></span>
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For the TopLevel case</span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- see Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;"> <span id="LC244" class="line" lang="haskell"> <span class="n" style="color: #333;">addLocalFixities</span> <span class="n" style="color: #333;">fix_env</span> <span class="p">[</span><span class="n" style="color: #333;">name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC245" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span> <span class="n" style="color: #333;">name</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC246" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC244" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note: the bindLocalNames is somewhat suspicious</span></span>
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<pre style="margin: 0;">-<span id="LC245" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- because it binds a top-level name as a local name.</span></span>
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<pre style="margin: 0;">-<span id="LC246" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- however, this binding seems to work, and it only exists for</span></span>
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<pre style="margin: 0;">-<span id="LC247" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the duration of the patterns and the continuation;</span></span>
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<pre style="margin: 0;">-<span id="LC248" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- then the top-level name is added to the global env</span></span>
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<pre style="margin: 0;">-<span id="LC249" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- before going on to the RHSes (see GHC.Rename.Module).</span></span>
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<pre style="margin: 0;">+<span id="LC247" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">In the TopLevel case, the use of bindLocalNames here is somewhat</span></span>
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">suspicious because it binds a top-level External name in the</span></span>
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<pre style="margin: 0;">+<span id="LC251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">LocalRdrEnv. c.f. Note [LocalRdrEnv] in GHC.Types.Name.Reader.</span></span>
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<pre style="margin: 0;">+<span id="LC252" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC253" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">However, this only happens when renaming the LHS (only) of a top-level</span></span>
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<pre style="margin: 0;">+<span id="LC254" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">pattern binding. Even though this only the LHS, we need to bring the</span></span>
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<pre style="margin: 0;">+<span id="LC255" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">binder into scope in the pattern itself in case the binder is used in</span></span>
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<pre style="margin: 0;">+<span id="LC256" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">subsequent view patterns. A bit bizarre, something like</span></span>
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<pre style="margin: 0;">+<span id="LC257" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (x, Just y <- f x) = e</span></span>
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<pre style="margin: 0;">+<span id="LC258" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC259" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Anyway, bindLocalNames does work, and the binding only exists for the</span></span>
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<pre style="margin: 0;">+<span id="LC260" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">duration of the pattern; then the top-level name is added to the</span></span>
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<pre style="margin: 0;">+<span id="LC261" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">global env before going on to the RHSes (see GHC.Rename.Module).</span></span>
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<pre style="margin: 0;"> <span id="LC262" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC251" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;"> <span id="LC263" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [View pattern usage]</span></span>
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<pre style="margin: 0;"> <span id="LC264" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC265" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Consider</span></span>
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<li id="03e77c5a7f093768fb8c3be51f8c4ece06b78463">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/aecd7ed0a6c5e5640fb68b7bde505c2114db37ac...4f7cb81ba6c3e80245bec256eeb1bbbc82a9a74c#03e77c5a7f093768fb8c3be51f8c4ece06b78463"><strong>compiler/GHC/Types/Name/Reader.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -338,13 +338,24 @@ instance Ord RdrName where</td>
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<pre style="margin: 0;"> <span id="LC338" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC341" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">The LocalRdrEnv is used to store local bindings (let, where, lambda, case).</span></span>
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<pre style="margin: 0;">+<span id="LC345" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* It is keyed by OccName, because we never use it for qualified names.</span></span>
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<pre style="margin: 0;">+<span id="LC346" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC347" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* It maps the OccName to a Name. That Name is almost always an</span></span>
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<pre style="margin: 0;">+<span id="LC348" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Internal Name, but (hackily) it can be External too for top-level</span></span>
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<pre style="margin: 0;">+<span id="LC349" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> pattern bindings. See Note [bindLocalNames for an External name]</span></span>
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<pre style="margin: 0;">+<span id="LC350" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> in GHC.Rename.Pat</span></span>
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<pre style="margin: 0;">+<span id="LC351" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC352" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">* We keep the current mapping (lre_env), *and* the set of all Names in</span></span>
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<pre style="margin: 0;">+<span id="LC353" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> scope (lre_in_scope). Reason: see Note [Splicing Exact names] in</span></span>
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<pre style="margin: 0;">+<span id="LC354" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> GHC.Rename.Env.</span></span>
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<pre style="margin: 0;">+<span id="LC355" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"><span class="cd">-- | Local Reader Environment</span></span>
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<pre style="margin: 0;">-<span id="LC342" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC343" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This environment is used to store local bindings</span></span>
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<pre style="margin: 0;">-<span id="LC344" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (@let@, @where@, lambda, @case@).</span></span>
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<pre style="margin: 0;">-<span id="LC345" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- It is keyed by OccName, because we never use it for qualified names</span></span>
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<pre style="margin: 0;">-<span id="LC346" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- We keep the current mapping, *and* the set of all Names in scope</span></span>
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<pre style="margin: 0;">-<span id="LC347" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Reason: see Note [Splicing Exact names] in "GHC.Rename.Env"</span></span>
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<pre style="margin: 0;">+<span id="LC358" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">NameSet</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -364,16 +375,15 @@ emptyLocalRdrEnv = LRE { lre_env = emptyOccEnv</td>
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<pre style="margin: 0;"> <span id="LC375" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyNameSet</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC376" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC377" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span></span>
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<pre style="margin: 0;">-<span id="LC367" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">The Name should be a non-top-level thing</span></span></span>
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">See Note [LocalRdrEnv]</span></span></span>
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<pre style="margin: 0;"> <span id="LC379" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnv</span> <span class="n" style="color: #333;">lre</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ns</span> <span class="p">})</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">-<span id="LC369" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">WARN</span><span class="p">(</span> <span class="n" style="color: #333;">isExternalName</span> <span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">name</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC370" class="line" lang="haskell"> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">+<span id="LC380" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendNameSet</span> <span class="n" style="color: #333;">ns</span> <span class="n" style="color: #333;">name</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnvList</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [LocalRdrEnv]</span></span>
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"><span class="n" style="color: #333;">extendLocalRdrEnvList</span> <span class="n" style="color: #333;">lre</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LRE</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ns</span> <span class="p">})</span> <span class="n" style="color: #333;">names</span></span>
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<pre style="margin: 0;">-<span id="LC375" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">WARN</span><span class="p">(</span> <span class="n" style="color: #333;">any</span> <span class="n" style="color: #333;">isExternalName</span> <span class="n" style="color: #333;">names</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">names</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnvList</span> <span class="n" style="color: #333;">env</span> <span class="p">[(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">n</span><span class="p">,</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">names</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lre</span> <span class="p">{</span> <span class="n" style="color: #333;">lre_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendOccEnvList</span> <span class="n" style="color: #333;">env</span> <span class="p">[(</span><span class="n" style="color: #333;">nameOccName</span> <span class="n" style="color: #333;">n</span><span class="p">,</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">names</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">lre_in_scope</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendNameSetList</span> <span class="n" style="color: #333;">ns</span> <span class="n" style="color: #333;">names</span> <span class="p">}</span></span>
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388
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"></span>
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379
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389
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"><span class="n" style="color: #333;">lookupLocalRdrEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RdrName</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/aecd7ed0a6c5e5640fb68b7bde505c2114db37ac...4f7cb81ba6c3e80245bec256eeb1bbbc82a9a74c#8bdb62b981f38737157a853655e494433eea6796"><strong>ghc.mk</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">@@ -656,7 +656,9 @@ BUILD_DIRS += $(patsubst %, libraries/%, $(PACKAGES_STAGE1))</td>
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<pre style="margin: 0;"> <span id="LC656" class="line" lang="make"><span class="nv" style="color: #008080;">BUILD_DIRS</span> <span class="o" style="font-weight: 600;">+=</span> <span class="nf" style="color: #900; font-weight: 600;">$(</span><span class="nb" style="color: #0086b3;">patsubst</span> %, libraries/%, <span class="nf" style="color: #900; font-weight: 600;">$(</span><span class="nb" style="color: #0086b3;">filter-out</span> <span class="nv" style="color: #008080;">$(PACKAGES_STAGE1)</span>,<span class="nv" style="color: #008080;">$(PACKAGES_STAGE0)</span><span class="nf" style="color: #900; font-weight: 600;">))</span></span>
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<pre style="margin: 0;"> <span id="LC657" class="line" lang="make"><span class="k" style="font-weight: 600;">endif</span></span>
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658
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<pre style="margin: 0;"> <span id="LC658" class="line" lang="make"></span>
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<pre style="margin: 0;">+<span id="LC659" class="line" lang="make"><span class="k" style="font-weight: 600;">ifeq</span> <span class="nv" style="color: #008080;">"$(BIGNUM_BACKEND)" "gmp"</span></span>
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<pre style="margin: 0;"> <span id="LC660" class="line" lang="make"><span class="nv" style="color: #008080;">BUILD_DIRS</span> <span class="o" style="font-weight: 600;">+=</span> libraries/ghc-bignum/gmp</span>
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<pre style="margin: 0;">+<span id="LC661" class="line" lang="make"><span class="k" style="font-weight: 600;">endif</span></span>
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<pre style="margin: 0;"> <span id="LC662" class="line" lang="make"><span class="nv" style="color: #008080;">BUILD_DIRS</span> <span class="o" style="font-weight: 600;">+=</span> utils/haddock</span>
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<pre style="margin: 0;"> <span id="LC663" class="line" lang="make"><span class="nv" style="color: #008080;">BUILD_DIRS</span> <span class="o" style="font-weight: 600;">+=</span> utils/haddock/doc</span>
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<pre style="margin: 0;"> <span id="LC664" class="line" lang="make"><span class="nv" style="color: #008080;">BUILD_DIRS</span> <span class="o" style="font-weight: 600;">+=</span> compiler</span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/aecd7ed0a6c5e5640fb68b7bde505c2114db37ac...4f7cb81ba6c3e80245bec256eeb1bbbc82a9a74c#36b8946721cfafb20918a66b3ffb21b3a4c37935"><strong>libraries/base/GHC/IO.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">@@ -173,7 +173,7 @@ catchException !io handler = catch io handler</td>
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173
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<pre style="margin: 0;"> <span id="LC173" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @IO Int -> (ArithException -> IO Int) -> IO Int@ then the handler may</span></span>
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174
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<pre style="margin: 0;"> <span id="LC174" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- get run with @DivideByZero@ as an argument, or an @ErrorCall \"urk\"@</span></span>
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<pre style="margin: 0;"> <span id="LC175" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- exception may be propagated further up. If you call it again, you</span></span>
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<pre style="margin: 0;">-<span id="LC176" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- might get <span class="idiff left right">a </span>the opposite behaviour. This is ok, because 'catch' is an</span></span>
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<pre style="margin: 0;">+<span id="LC176" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- might get the opposite behaviour. This is ok, because 'catch' is an</span></span>
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<pre style="margin: 0;"> <span id="LC177" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'IO' computation.</span></span>
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178
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178
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<pre style="margin: 0;"> <span id="LC178" 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="LC179" class="line" lang="haskell"><span class="n" style="color: #333;">catch</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Exception</span> <span class="n" style="color: #333;">e</span></span>
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