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<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Apoorv Ingle pushed to branch wip/expand-do 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/f932c5890ec358aa0cbba547eb6982168e13da37">f932c589</a></strong>
<div>
<span> by Adam Gundry </span> <i> at 2023-03-24T02:36:09-04:00 </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;'>Allow WARNING pragmas to be controlled with custom categories
Closes #17209. This implements GHC Proposal 541, allowing a WARNING
pragma to be annotated with a category like so:
{-# WARNING in "x-partial" head "This function is undefined on empty lists." #-}
The user can then enable, disable and set the severity of such warnings
using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on. There
is a new warning group `-Wextended-warnings` containing all these warnings.
Warnings without a category are treated as if the category was `deprecations`,
and are (still) controlled by the flags `-Wdeprecations`
and `-Wwarnings-deprecations`.
Updates Haddock submodule.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0426515be8836acfdde7ddc9cf35a99a7a73f278">0426515b</a></strong>
<div>
<span> by Adam Gundry </span> <i> at 2023-03-24T02:36:09-04:00 </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;'>Move mention of warning groups change to 9.8.1 release notes
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8d783d24b9a617ad1e3038abeb75d322703ef65">b8d783d2</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-24T02:36:45-04:00 </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;'>nativeGen/AArch64: Fix bitmask immediate predicate
Previously the predicate for determining whether a logical instruction
operand could be encoded as a bitmask immediate was far too
conservative. This meant that, e.g., pointer untagged required five
instructions whereas it should only require one.
Fixes #23030.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/46120bb637452be6e16e5dd7091c0b469a5adcd5">46120bb6</a></strong>
<div>
<span> by Joachim Breitner </span> <i> at 2023-03-24T13:09:43-04:00 </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;'>User's guide: Improve docs for -Wall
previously it would list the warnings _not_ enabled by -Wall. That’s
unnecessary round-about and was out of date. So let's just name
the relevant warnings (based on `compiler/GHC/Driver/Flags.hs`).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/509d1f11bf4e7eb4b916ae1c33abc48047b3be0e">509d1f11</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-24T13:10:20-04:00 </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;'>codeGen/tsan: Disable instrumentation of unaligned stores
There is some disagreement regarding the prototype of
`__tsan_unaligned_write` (specifically whether it takes just the written
address, or the address and the value as an argument). Moreover, I have
observed crashes which appear to be due to it. Disable instrumentation
of unaligned stores as a temporary mitigation.
Fixes #23096.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6a73655fd6d22f0fd7e1c24d0d07a573b6bdc042">6a73655f</a></strong>
<div>
<span> by Li-yao Xia </span> <i> at 2023-03-25T00:02:44-04:00 </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;'>base: Document GHC versions associated with past base versions in the changelog
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43bd76946233fd0b21293917be8fd455341cb6d3">43bd7694</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-25T00:03:24-04:00 </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 regression test for #17574
This test currently fails in the nonmoving way
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f2d56bf735185a59d7ce916edcf6a97f1401b230">f2d56bf7</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-03-25T00:03:24-04:00 </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;'>fix: account for large and compact object stats with nonmoving gc
Make sure that we keep track of the size of large and compact objects that have been moved onto the nonmoving heap.
We keep track of their size and add it to the amount of live bytes in nonmoving segments to get the total size of the live nonmoving heap.
Resolves #17574
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7131b705d54ed7ed20e9946d9ace45228ec5febd">7131b705</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-25T00:04:04-04:00 </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;'>Modify ThreadId documentation and comments
For a long time, `GHC.Conc.Sync` has said
```haskell
-- ToDo: data ThreadId = ThreadId (Weak ThreadId#)
-- But since ThreadId# is unlifted, the Weak type must use open
-- type variables.
```
We are now actually capable of using `Weak# ThreadId#`, but the
world has moved on. To support the `Show` and `Ord` instances, we'd
need to store the thread ID number in the `ThreadId`. And it seems
very difficult to continue to support `threadStatus` in that regime,
since it needs to be able to explain how threads died. In addition,
garbage collection of weak references can be quite expensive, and it
would be hard to evaluate the cost over he whole ecosystem. As discussed
in
[this CLC issue](https://github.com/haskell/core-libraries-committee/issues/125),
it doesn't seem very likely that we'll actually switch to weak
references here.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c421bbbbf2a353858dda8f998d4997cce5977c03">c421bbbb</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T00:04:41-04:00 </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;'>rts: Fix barriers of IND and IND_STATIC
Previously IND and IND_STATIC lacked the acquire barriers enjoyed by
BLACKHOLE. As noted in the (now updated) Note [Heap memory barriers],
this barrier is critical to ensure that the indirectee is visible to the
entering core.
Fixes #22872.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/62fa7faaf8ca2d34cda3e3b7c4c6b2d13efa16fe">62fa7faa</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-25T00:05:22-04:00 </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;'>Improve documentation of atomicModifyMutVar2#
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b2d14d0b8ebb517139c08934a52791f21fe893f6">b2d14d0b</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2023-03-25T03:46:43-04:00 </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;'>rts: use performBlockingMajorGC in hs_perform_gc and fix ffi023
This patch does a few things:
- Add the missing RtsSymbols.c entry of performBlockingMajorGC
- Make hs_perform_gc call performBlockingMajorGC, which restores
previous behavior
- Use hs_perform_gc in ffi023
- Remove rts_clearMemory() call in ffi023, it now works again in some
test ways previously marked as broken. Fixes #23089
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9ae24ad3de71e14364665ff1741aa3551e7c526">d9ae24ad</a></strong>
<div>
<span> by Cheng Shao </span> <i> at 2023-03-25T03:46:44-04:00 </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;'>testsuite: add the rts_clearMemory test case
This patch adds a standalone test case for rts_clearMemory that mimics
how it's typically used by wasm backend users and ensures this RTS API
isn't broken by future RTS refactorings. Fixes #23901.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/80729d96e47c99dc38e83612dfcfe01cf565eac0">80729d96</a></strong>
<div>
<span> by Bodigrim </span> <i> at 2023-03-25T03:47:22-04:00 </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;'>Improve documentation for resizing of byte arrays
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c6ec4cd1a94a1b76b7b094d5c92ee605031ecf60">c6ec4cd1</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T20:23:47-04:00 </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;'>rts: Don't rely on EXTERN_INLINE for slop-zeroing logic
Previously we relied on calling EXTERN_INLINE functions defined in
ClosureMacros.h from Cmm to zero slop. However, as far as I can tell,
this is no longer safe to do in C99 as EXTERN_INLINE definitions may be emitted
in each compilation unit.
Fix this by explicitly declaring a new set of non-inline functions in
ZeroSlop.c which can be called from Cmm and marking the ClosureMacros.h
definitions as INLINE_HEADER.
In the future we should try to eliminate EXTERN_INLINE.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c32abd4b936b3dfc61974ed5915c330fe7ed10d5">c32abd4b</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-03-25T20:23:48-04:00 </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;'>rts: Fix capability-count check in zeroSlop
Previously `zeroSlop` examined `RtsFlags` to determine whether the
program was single-threaded. This is wrong; a program may be started
with `+RTS -N1` yet the process may later increase the capability count
with `setNumCapabilities`. This lead to quite subtle and rare crashes.
Fixes #23088.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/656d4cb3e3a450ececcc72ffd2aca6f8e6489102">656d4cb3</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-03-25T20:24:23-04:00 </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 Eq/Ord instances for SSymbol, SChar, and SNat
This implements [CLC proposal #148](https://github.com/haskell/core-libraries-committee/issues/148).
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4f93de888fb8be5241b476442045eb40b2a5abbd">4f93de88</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-26T15:33:02-04:00 </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;'>Update and expand atomic modification Haddocks
* The documentation for `atomicModifyIORef` and `atomicModifyIORef'`
were incomplete, and the documentation for `atomicModifyIORef` was
out of date. Update and expand.
* Remove a useless lazy pattern match in the definition of
`atomicModifyIORef`. The pair it claims to match lazily
was already forced by `atomicModifyIORef2`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e1fb56b24e2fe45a6f628f651bfc12b2b9743378">e1fb56b2</a></strong>
<div>
<span> by David Feuer </span> <i> at 2023-03-26T15:33:41-04:00 </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;'>Document the constructor name for lists
Derived `Data` instances use raw infix constructor names when applicable.
The `Data.Data [a]` instance, if derived, would have a constructor name
of `":"`. However, it actually uses constructor name `"(:)"`. Document this
peculiarity.
See https://github.com/haskell/core-libraries-committee/issues/147
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/80fdb84dccf51127c60e29cfa492f83aa0b455ef">80fdb84d</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>HsExpand for HsDo
Fixes for #18324
- fixed rec do blocks to use mfix
- make sure fail is used for pattern match failures in bind statments
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bb631e73da2eaedf15c5026f4bbf9a8c317daf0b">bb631e73</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>move expand_do_stmts GHC.Tc.Match so that we can type check patterns and determine more accurately if we need to generate a fail block
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/72161935f42e4b18a0d743b8e60adbf378cac5c4">72161935</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>do stmt expansion for Applicative Do
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/49e28b4402f1d6b4752b966e3b1bb8afc80f00de">49e28b44</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>expansion of a bind statement may not be as easy as it looks. T18324b.hs is a an example. I think its some delicate interaction between quick look and type families
</pre>
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<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fad59d3259fb4579ec31f01bd6f384bd474ae401">fad59d32</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>do not add explicit return for `mfix` mdo blocks. This whole last stmt business is very messy.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/25a888e02e77df01e4822be7b70f4fd0c31f80d1">25a888e0</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-27T11:12:44-05:00 </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;'>wrap the mfix function arg tuple in a lazy pattern so that we do not go in a recursive loop
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/17cb23ea80b7352c7f4ac62308b5fa89b7dde1f6">17cb23ea</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-03-28T19:39:55-05:00 </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;'>carry over some location info into the expanded expresion
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6b5ddc4f8471d50696e5a771327fb99968b534eb">6b5ddc4f</a></strong>
<div>
<span> by Apoorv Ingle </span> <i> at 2023-04-10T00:23:05-05:00 </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;'>trying to add warnings for unused bindings at type checking rather than HsToCore. Current state is that spurious warnings are generated
</pre>
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<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
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<a href="#451725cc4e5d443a3b7c2adcdf224840f953b7e2">
compiler/GHC/Builtin/primops.txt.pp
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<a href="#194e2602b82bb08fd31c3028aace1da113aae36f">
compiler/GHC/Cmm/ThreadSanitizer.hs
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<a href="#6997a0cd37829d3d08db1c48185aaa3d7dfc3e6b">
compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
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compiler/GHC/Driver/Config/Diagnostic.hs
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<a href="#2e5692f568fd7b67a6b172e2a60469da8392508c">
compiler/GHC/Driver/Flags.hs
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compiler/GHC/Driver/Session.hs
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compiler/GHC/Hs/Decls.hs
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compiler/GHC/Hs/Expr.hs
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compiler/GHC/HsToCore/Docs.hs
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compiler/GHC/Parser.y
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compiler/GHC/Parser/HaddockLex.x
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<a href="#86d694037d496c511e28b2c09c8410f67dc19596">
compiler/GHC/Rename/Env.hs
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compiler/GHC/Rename/Expr.hs
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compiler/GHC/Rename/Module.hs
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compiler/GHC/Rename/Names.hs
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compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Gen/App.hs
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compiler/GHC/Tc/Gen/Export.hs
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compiler/GHC/Tc/Gen/Expr.hs
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compiler/GHC/Tc/Gen/Match.hs
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compiler/GHC/Tc/Gen/Pat.hs
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compiler/GHC/Tc/Module.hs
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compiler/GHC/Types/Error.hs
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compiler/GHC/Types/Error/Codes.hs
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compiler/GHC/Unit/Module/Warnings.hs
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compiler/GHC/Utils/Error.hs
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docs/users_guide/9.6.1-notes.rst
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docs/users_guide/9.8.1-notes.rst
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docs/users_guide/exts/pragmas.rst
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