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<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Vladislav Zavialov pushed to branch wip/sand-witch/#16635-improve-errors 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/2b0c9f5ef026df6dd2637aacce05a11d74146296">2b0c9f5e</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-06-08T07:52:34+00:00 </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;'>Don't report redundant Givens from quantified constraints
This fixes #23323
See (RC4) in Note [Tracking redundant constraints]
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/567b32e12cbae07bee78d66252e83a0ad08419be">567b32e1</a></strong>
<div>
<span> by David Binder </span> <i> at 2023-06-08T18:41:29-04:00 </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;'>Update the outdated instructions in HACKING.md on how to compile GHC
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2b1a4abe3f5935ca58c84c6073e6bdfa5160832f">2b1a4abe</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-06-09T07:56:58-04:00 </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;'>Restore mingwex dependency on Windows
This partially reverts some of the changes in !9475 to make `base` and
`ghc-prim` depend on the `mingwex` library on Windows. It also restores the
RTS's stubs for `mingwex`-specific symbols such as `_lock_file`.
This is done because the C runtime provides `libmingwex` nowadays, and
moreoever, not linking against `mingwex` requires downstream users to link
against it explicitly in difficult-to-predict circumstances. Better to always
link against `mingwex` and prevent users from having to do the guesswork
themselves.
See https://gitlab.haskell.org/ghc/ghc/-/merge_requests/10360#note_495873 for
the discussion that led to this.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/289547580b6f2808ee123f106c3118b716486d5b">28954758</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-06-09T07:56:58-04:00 </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;'>RtsSymbols.c: Remove mingwex symbol stubs
As of !9475, the RTS now links against `ucrt` instead of `msvcrt` on Windows,
which means that the RTS no longer needs to declare stubs for the `__mingw_*`
family of symbols. Let's remove these stubs to avoid confusion.
Fixes #23309.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3ab0155b43e3a4a15217206a0731993b604fb958">3ab0155b</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-06-09T07:57:35-04:00 </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;'>Consistently use validity checks for TH conversion of data constructors
We were checking that TH-spliced data declarations do not look like this:
```hs
data D :: Type = MkD Int
```
But we were only doing so for `data` declarations' data constructors, not for
`newtype`s, `data instance`s, or `newtype instance`s. This patch factors out
the necessary validity checks into its own `cvtDataDefnCons` function and uses
it in all of the places where it needs to be.
Fixes #22559.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a24b83ddabac6b7eeb63db13884e4403f71375dd">a24b83dd</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-09T15:19:00-04:00 </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 behaviour of -keep-tmp-files when used in OPTIONS_GHC pragma
This fixes the behaviour of -keep-tmp-files when used in an OPTIONS_GHC
pragma for files with module level scope.
Instead of simple not deleting the files, we also need to remove them
from the TmpFs so they are not deleted later on when all the other files
are deleted.
There are additional complications because you also need to remove the
directory where these files live from the TmpFs so we don't try to
delete those later either.
I added two tests.
1. Tests simply that -keep-tmp-files works at all with a single module
and --make mode.
2. The other tests that temporary files are deleted for other modules
which don't enable -keep-tmp-files.
Fixes #23339
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/dcf3288273d2418800e2dee97c937673a1d38a8f">dcf32882</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-09T15:19:00-04:00 </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;'>withDeferredDiagnostics: When debugIsOn, write landmine into IORef to catch use-after-free.
Ticket #23305 reports an error where we were attempting to use the
logger which was created by withDeferredDiagnostics after its scope had
ended.
This problem would have been caught by this patch and a validate build:
```
+*** Exception: Use after free
+CallStack (from HasCallStack):
+ error, called at compiler/GHC/Driver/Make.hs:<line>:<column> in <package-id>:GHC.Driver.Make
```
This general issue is tracked by #20981
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/432c736c19446a011fca1f9485c67761c991bd42">432c736c</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-09T15:19:00-04:00 </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;'>Don't return complete HscEnv from upsweep
By returning a complete HscEnv from upsweep the logger (as introduced by
withDeferredDiagnostics) was escaping the scope of
withDeferredDiagnostics and hence we were losing error messages.
This is reminiscent of #20981, which also talks about writing errors
into messages after their scope has ended.
See #23305 for details.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/26013cdc40183c1b7ee4b5674750133d17f73a72">26013cdc</a></strong>
<div>
<span> by Alexander McKenna </span> <i> at 2023-06-09T15:19:41-04:00 </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;'>Dump `SpecConstr` specialisations separately
Introduce a `-ddump-spec-constr` flag which debugs specialisations from
`SpecConstr`. These are no longer shown when you use `-ddump-spec`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4639100b5dd19fe2cabb36f7e457826e44a579aa">4639100b</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-09T18:50:43-04:00 </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;'>Add role annotations to SNat, SSymbol and SChar
Ticket #23454 explained it was possible to implement unsafeCoerce
because SNat was lacking a role annotation.
As these are supposed to be singleton types but backed by an efficient
representation the correct annotation is nominal to ensure these kinds
of coerces are forbidden.
These annotations were missed from https://github.com/haskell/core-libraries-committee/issues/85
which was implemented in 532de36870ed9e880d5f146a478453701e9db25d.
CLC Proposal: https://github.com/haskell/core-libraries-committee/issues/170
Fixes #23454
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9c0dcff72ff763828cacb6ff7af99899acfe06b4">9c0dcff7</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-09T18:51:19-04:00 </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;'>Remove non-existant bytearray-ops.txt.pp file from ghc.cabal.in
This broke the sdist generation.
Fixes #23489
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/273ff0c786965de805976e52c8367a036f4f8d95">273ff0c7</a></strong>
<div>
<span> by David Binder </span> <i> at 2023-06-09T18:52:00-04:00 </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;'>Regression test T13438 is no longer marked as "expect_broken" in the testsuite driver.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b84a29005ac0b258e0bad04b0acf933b71bd6e98">b84a2900</a></strong>
<div>
<span> by Andrei Borzenkov </span> <i> at 2023-06-10T08:27:28-04:00 </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 -Wterm-variable-capture scope (#23434)
-Wterm-variable-capture wasn't accordant with type variable
scoping in associated types, in type classes. For example,
this code produced the warning:
k = 12
class C k a where
type AT a :: k -> Type
I solved this issue by reusing machinery of newTyVarNameRn function
that is accordand with associated types: it does lookup for each free type
variable when we are in the type class context. And in this patch I
use result of this work to make sure that -Wterm-variable-capture warns
only on implicitly quantified type variables.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9d1a8d87c2364321f27f4fc224a7042d5e47612d">9d1a8d87</a></strong>
<div>
<span> by Jorge Mendes </span> <i> at 2023-06-10T08:28:10-04:00 </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;'>Remove redundant case statement in rts/js/mem.js.</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a1f350e24733e28465c53ed3f5c2b5481b97dc69">a1f350e2</a></strong>
<div>
<span> by Oleg Grenrus </span> <i> at 2023-06-13T09:42:16-04:00 </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;'>Change WarningWithFlag to plural WarningWithFlags
Resolves #22825
Now each diagnostic can name multiple different warning flags for its reason.
There is currently one use case: missing signatures.
Currently we need to check which warning flags are enabled when
generating the diagnostic, which is against the declarative nature of
the diagnostic framework.
This patch allows a warning diagnostic to have multiple warning flags,
which makes setup more declarative.
The WarningWithFlag pattern synonym is added for backwards compatibility
The 'msgEnvReason' field is added to MsgEnvelope to store the
`ResolvedDiagnosticReason`, which accounts for the enabled flags, and
then that is used for pretty printing the diagnostic.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ec01f0ec5877f5cacb4c3a6ba3f18d2d0d900f9c">ec01f0ec</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-13T09:42:59-04:00 </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 a test Way for running ghci with Core optimizations
Tracking ticket: #23059
This runs compile_and_run tests with optimised code with bytecode
interpreter
Changed submodules: hpc, process
Co-authored-by: Torsten Schmits <git@tryp.io>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c6741e72f639f4d8e650b5f7c374aac498218584">c6741e72</a></strong>
<div>
<span> by Rodrigo Mesquita </span> <i> at 2023-06-13T09:43:38-04:00 </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;'>Configure -Qunused-arguments instead of hardcoding it
When GHC invokes clang, it currently passes -Qunused-arguments to
discard warnings resulting from GHC using multiple options that aren't
used.
In this commit, we configure -Qunused-arguments into the Cc options
instead of checking if the compiler is clang at runtime and hardcoding
the flag into GHC.
This is part of the effort to centralise toolchain information in
toolchain target files at configure time with the end goal of a runtime
retargetable GHC.
This also means we don't need to call getCompilerInfo ever, which
improves performance considerably (see !10589).
Metric Decrease:
PmSeriesG
T10421
T11303b
T12150
T12227
T12234
T12425
T13035
T13253-spj
T13386
T15703
T16875
T17836b
T17977
T17977b
T18140
T18282
T18304
T18698a
T18698b
T18923
T20049
T21839c
T3064
T5030
T5321FD
T5321Fun
T5837
T6048
T9020
T9198
T9872d
T9961
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0128db8744da2d015f84eb3881ffcf573547abce">0128db87</a></strong>
<div>
<span> by Victor Cacciari Miraldo </span> <i> at 2023-06-13T09:44:18-04:00 </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 docs for Data.Fixed; adds 'realToFrac' as an option for conversion
between different precisions.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/95b69cfb3d601eb3e6c5b1727c4cfef25ab87d68">95b69cfb</a></strong>
<div>
<span> by Ryan Scott </span> <i> at 2023-06-13T09:44:55-04:00 </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 #23143
!10541, the fix for #23323, also fixes #23143. Let's add a regression test to
ensure that it stays fixed.
Fixes #23143.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ed2dbdcab3272ac8d81075ef60920096d2481fb3">ed2dbdca</a></strong>
<div>
<span> by Emily Martins </span> <i> at 2023-06-13T09:45:37-04:00 </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;'>delete GHCi.UI.Tags module and remove remaining references
Co-authored-by: Tilde Rose <t1lde@protonmail.com>
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c90d96e403eb548c705dc7ae57f3c52bddbf3243">c90d96e4</a></strong>
<div>
<span> by Victor Cacciari Miraldo </span> <i> at 2023-06-13T09:46:26-04:00 </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 17328
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/de58080c9d488c17519f64b633b171ec46ce65f0">de58080c</a></strong>
<div>
<span> by Victor Cacciari Miraldo </span> <i> at 2023-06-13T09:46:26-04:00 </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;'>Skip checking whether constructors are in scope when deriving
newtype instances.
Fixes #17328
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5e3c2b055d47a4748a84b9df8c9fb59acaeee49c">5e3c2b05</a></strong>
<div>
<span> by Philip Hazelden </span> <i> at 2023-06-13T09:47:07-04:00 </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;'>Don't suggest `DeriveAnyClass` when instance can't be derived.
Fixes #19692.
Prototypical cases:
class C1 a where
x1 :: a -> Int
data G1 = G1 deriving C1
class C2 a where
x2 :: a -> Int
x2 _ = 0
data G2 = G2 deriving C2
Both of these used to give this suggestion, but for C1 the suggestion
would have failed (generated code with undefined methods, which compiles
but warns). Now C2 still gives the suggestion but C1 doesn't.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/80a0b0992bdf9d8c056341795c36aff9499515bf">80a0b099</a></strong>
<div>
<span> by David Binder </span> <i> at 2023-06-13T09:47:49-04:00 </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 testcase for error GHC-00711 to testsuite
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e4b33a1ded2a3934f4b1bf61c348f06241eb49c5">e4b33a1d</a></strong>
<div>
<span> by Oleg Grenrus </span> <i> at 2023-06-14T07:01:21-04:00 </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 -Wmissing-poly-kind-signatures
Implements #22826
This is a restricted version of -Wmissing-kind-signatures shown only for polykinded types.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f8395b94ad23bbf50248e3acdcfdd393005dba1e">f8395b94</a></strong>
<div>
<span> by doyougnu </span> <i> at 2023-06-14T07:02:01-04:00 </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;'>ci: special case in req_host_target_ghc for JS
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b852a5b662aaad6d651734ffd16852beedf7e99a">b852a5b6</a></strong>
<div>
<span> by Gergo ERDI </span> <i> at 2023-06-14T07:02:42-04:00 </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;'>When forcing a `ModIface`, force the `MINIMAL` pragmas in class definitions
Fixes #23486
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c29b45eefc27cacb0ea014d856500396e178da25">c29b45ee</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2023-06-14T07:03:19-04:00 </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 a testcase for #20076
Remove 'recursive' in the error message, since the error
can arise without recursion.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b80ef202d24a3d529d4409d7a6815a9644ea32a9">b80ef202</a></strong>
<div>
<span> by Krzysztof Gogolewski </span> <i> at 2023-06-14T07:03:56-04:00 </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;'>Use tcInferFRR to prevent bad generalisation
Fixes #23176
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bd8ef37d3a494579f3b29a14af74ab91de07c6a2">bd8ef37d</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-06-14T07:04:31-04:00 </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;'>ci: Add dependenices on necessary aarch64 jobs for head.hackage ci
These need to be added since we started testing aarch64 on head.hackage
CI. The jobs will sometimes fail because they will start before the
relevant aarch64 job has finished.
Fixes #23511
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a0c27cee239462bb9346c8fdbe7f6fd1e6f265a5">a0c27cee</a></strong>
<div>
<span> by Vladislav Zavialov </span> <i> at 2023-06-14T07:05:08-04:00 </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 standalone kind signatures for Code and TExp
CodeQ and TExpQ already had standalone kind signatures
even before this change:
type TExpQ :: TYPE r -> Kind.Type
type CodeQ :: TYPE r -> Kind.Type
Now Code and TExp have signatures too:
type TExp :: TYPE r -> Kind.Type
type Code :: (Kind.Type -> Kind.Type) -> TYPE r -> Kind.Type
This is a stylistic change.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e70c12457f9c0096f4e5dd18605a930d4d1b0e45">e70c1245</a></strong>
<div>
<span> by Tom Ellis </span> <i> at 2023-06-14T07:05:48-04:00 </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;'>Warn that GHC.TypeLits.Internal should not be used
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/100650e35d6d17965e293160785360933c9e0a25">100650e3</a></strong>
<div>
<span> by Tom Ellis </span> <i> at 2023-06-14T07:05:48-04:00 </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;'>Warn that GHC.TypeNats.Internal should not be used
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8e3084256cd8a84da5a105afd550c90d9e799e52">8e308425</a></strong>
<div>
<span> by Andrei Borzenkov </span> <i> at 2023-06-14T20:54:45+02:00 </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;'>Report scoped kind variables at the type-checking phase (#16635)
This patch modifies the renamer to respect ScopedTypeVariables in kind
signatures. This means that kind variables bound by the outermost
`forall` now scope over the type:
type F = '[Right @a @() () :: forall a. Either a ()]
-- ^^^^^^^^^^^^^^^ ^^^
-- in scope here bound here
However, any use of such variables is a type error, because we don't
have type-level lambdas to bind them in Core. This is described in the
new Note [Type variable scoping errors during type check] in GHC.Tc.Types.
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
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.gitlab-ci.yml
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HACKING.md
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compiler/GHC/Core/Type.hs
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compiler/GHC/Data/BooleanFormula.hs
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compiler/GHC/Driver/Config/Core/Lint.hs
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compiler/GHC/Driver/Flags.hs
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compiler/GHC/Driver/Session.hs
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compiler/GHC/Hs/Type.hs
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compiler/GHC/Iface/Decl.hs
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</h5>
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