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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/078250eff2e542d7820c5e00dcf1ce2b43a2e968">078250ef</a></strong>
<div>
<span> by Jacco Krijnen </span> <i> at 2023-06-14T17:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add more flags for dumping core passes (#23491)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1b7604af7dd8c787043ab46d4ad4f84bf131cd3c">1b7604af</a></strong>
<div>
<span> by Jacco Krijnen </span> <i> at 2023-06-14T17:17:53-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add tests for dumping flags (#23491)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/420000000e2d3d1a07ff3aa2a24cc88bd3d48e75">42000000</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2023-06-14T17:18:29-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Provide a demand signature for atomicModifyMutVar.# (#23047)
Fixes #23047
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/54c30252c3fb1179e686ec5313981035ed159a06">54c30252</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-06-14T17:49:45-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>compiler: Cross-reference Note [StgToJS design]
In particular, the numeric representations are quite useful context in a
few places.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/eeb7d503b01d829299f7f53fd63cd7a082fc5797">eeb7d503</a></strong>
<div>
<span> by Andrei Borzenkov </span> <i> at 2023-06-14T17:49:45-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Implement the -Wimplicit-rhs-quantification warning (#23510)
GHC Proposal #425 "Invisible binders in type declarations" forbids
implicit quantification of type variables that occur free on the
right-hand side of a type synonym but are not mentioned on the left-hand side.
The users are expected to rewrite this using invisible binders:
type T1 :: forall a . Maybe a
type T1 = 'Nothing :: Maybe a -- old
type T1 @a = 'Nothing :: Maybe a -- new
Since the @k-binders are a new feature, we need to wait for three releases
before we require the use of the new syntax. In the meantime, we ought to
provide users with a new warning, -Wimplicit-rhs-quantification, that would
detect when such implicit quantification takes place, and include it in -Wcompat.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/542fe8bc8506c54bc166529cb329b0d4c604c002">542fe8bc</a></strong>
<div>
<span> by Sven Tennie </span> <i> at 2023-06-14T17:49:46-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Minor refactorings to mkSpillInstr and mkLoadInstr
Better error messages. And, use the existing `off` constant to reduce
duplication.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cd0c34a0bdf1a74a1deb7a87c4bfd0e1720d3c6d">cd0c34a0</a></strong>
<div>
<span> by doyougnu </span> <i> at 2023-06-14T17:50:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: merge util modules
Merge Core and StgUtil modules for StgToJS pass.
Closes: #23473
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5ebf253e93f915022a3aae879ae92d853ba0dce8">5ebf253e</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2023-06-14T17:50:04-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Check visibility of nested foralls in can_eq_nc (#18863)
Prior to this change, `can_eq_nc` checked the visibility of the
outermost layer of foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
Then it delegated the rest of the work to `can_eq_nc_forall`, which
split off all foralls:
forall a. forall b. forall c. phi1
forall x. forall y. forall z. phi2
^^
up to here
This meant that some visibility flags were completely ignored.
We fix this oversight by moving the check to `can_eq_nc_forall`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dd174a15dce18d6b08c4e06876e541e9469aadb1">dd174a15</a></strong>
<div>
<span> by Luite Stegeman </span> <i> at 2023-06-14T17:50:09-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: use regular mask for blocking IO
Blocking IO used uninterruptibleMask which should make any thread
blocked on IO unreachable by async exceptions (such as those from
timeout). This changes it to a regular mask.
It's important to note that the nodejs runtime does not actually
interrupt the blocking IO when the Haskell thread receives an
async exception, and that file positions may be updated and buffers
may be written after the Haskell thread has already resumed.
Any file descriptor affected by an async exception interruption
should therefore be used with caution.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/de860f749d140e69a758ba7bd2a3bff9ed9d19bd">de860f74</a></strong>
<div>
<span> by Luite Stegeman </span> <i> at 2023-06-14T17:50:09-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: nodejs: do not set 'readable' handler on stdin at startup
The Haskell runtime used to install a 'readable' handler on stdin
at startup in nodejs. This would cause the nodejs system to start
buffering the stream, causing data loss if the stdin file
descriptor is passed to another process.
This change delays installation of the 'readable' handler until
the first read of stdin by Haskell code.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9dee1024e02f11a54cd1f6b93d09c873e448c29">d9dee102</a></strong>
<div>
<span> by Luite Stegeman </span> <i> at 2023-06-14T17:50:09-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>JS: reserve one more virtual (negative) file descriptor
This is needed for upcoming support of the process package
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
</h4>
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<li class="file-stats">
<a href="#451725cc4e5d443a3b7c2adcdf224840f953b7e2">
compiler/GHC/Builtin/primops.txt.pp
</a>
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<li class="file-stats">
<a href="#807babf5b215890881c92043bcd08486141a405c">
compiler/GHC/CmmToAsm/AArch64/Instr.hs
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<a href="#574ab192f6f9c7baf983610e701fedce9fffda66">
compiler/GHC/Driver/Config/Core/Lint.hs
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<a href="#2e5692f568fd7b67a6b172e2a60469da8392508c">
compiler/GHC/Driver/Flags.hs
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<a href="#774d88050336ef660c7a219fb06c480c2fc639bc">
compiler/GHC/Driver/Session.hs
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<a href="#a0f4a8eca271853d8b54c439478b02969979dc2e">
compiler/GHC/JS/Make.hs
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<a href="#892acbb198a9095c917740d3c1297b56df4e3b7e">
compiler/GHC/Rename/HsType.hs
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<a href="#7dd1cd0f6f2164a14c83d9aa564dd32bc30e447a">
compiler/GHC/Rename/Module.hs
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<a href="#2d8735ef84465467a5955da9f7cfe05d6aba0320">
compiler/GHC/StgToJS/Apply.hs
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<a href="#3f4efdaa6045d6b36e06ec9ae9b0bc942490244e">
compiler/GHC/StgToJS/Arg.hs
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<a href="#590bbe4e971187420a1554e40c186c97b96b7076">
compiler/GHC/StgToJS/Closure.hs
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<a href="#452a7aecf67651b1b4584eef5b78fb73770785fd">
compiler/GHC/StgToJS/CodeGen.hs
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<a href="#a907899b16f99efc93390877e949fbce268d57e3">
<span class="deleted-file">
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compiler/GHC/StgToJS/CoreUtils.hs
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<a href="#f56d383d4087660b49242666fe1f796e5184a122">
compiler/GHC/StgToJS/DataCon.hs
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<a href="#d8f42268b4be6e47d85a5c59c6797430b4672dc6">
compiler/GHC/StgToJS/Expr.hs
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<a href="#8291e37e31fb5cd07c9661a2e966789189d725d3">
compiler/GHC/StgToJS/FFI.hs
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<a href="#83029ddfb3367f604031d8a377f8c84c008384f3">
compiler/GHC/StgToJS/Ids.hs
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<a href="#e09f1e9480e87656c84c1bbb39c1441b7884819d">
compiler/GHC/StgToJS/Prim.hs
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<a href="#eabba2b914bdbe2cacd479597ce22b6bb89ab554">
compiler/GHC/StgToJS/Sinker.hs
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<a href="#eca6625d8d270bf2a1ab327831858e804436b8c8">
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compiler/GHC/StgToJS/StgUtils.hs
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<a href="#2822d6defa206d9f39e5b5c6318c7b011dfc5b5a">
compiler/GHC/StgToJS/Utils.hs
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<a href="#1dd9c7a6bbc222c976a6ec1c4b772232ae60f7e5">
compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Solver/Equality.hs
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<a href="#d09e98aae6ad2eb59d08eac7894b68c0ab820cda">
compiler/GHC/Types/Demand.hs
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compiler/GHC/Types/Error/Codes.hs
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<a href="#0d674271b5e602f8c38b813c8c42593afce96a1b">
compiler/GHC/Types/Hint.hs
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<a href="#5543c5c6c25dc2d751debfc3bc1be17365251351">
compiler/GHC/Types/Hint/Ppr.hs
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<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">
compiler/ghc.cabal.in
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<a href="#36435f993774454b5956f3a38a9276ed176c61cc">
docs/users_guide/debugging.rst
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The diff was not included because it is too large.
</h5>
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