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<div class="content">
<h3 style="margin-top: 20px; margin-bottom: 10px;">
Zubin pushed to branch ghc-9.6 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/2b65bb7f40a755076d9c1bb8e0c83e71a41485fa">2b65bb7f</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-12-13T12:06:12+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Ensure non-moving gc is not running when pausing
(cherry picked from commit aa84cff4f68e09cc33129ce3fe1bad5aff19e5d9)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8d7a7b084363485bc110eac872cec6b741b500f">b8d7a7b0</a></strong>
<div>
<span> by Teo Camarasu </span> <i> at 2023-12-13T12:06:20+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Teach listAllBlocks about nonmoving heap
List all blocks on the non-moving heap.
Resolves #22627
(cherry picked from commit 5ad776abbb7c72d65d2ae27de5b2ec48b6e72cde)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b40bbcc0afc1952c3adcfe212ed36f846fabfdf9">b40bbcc0</a></strong>
<div>
<span> by Profpatsch </span> <i> at 2023-12-13T12:10:19+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Improve String & IsString documentation
(cherry picked from commit d751c583d29460f033fefb45e685fa40fb3487ad)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/51d41567d33d74efc5acbb20e4e83e290db8ea0e">51d41567</a></strong>
<div>
<span> by Finley McIlwaine </span> <i> at 2023-12-13T19:38:08+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Ensure unconstrained instance dictionaries get IPE info
In the `StgRhsCon` case of `GHC.Stg.Debug.collectStgRhs`, we were not coming up
with an initial source span based on the span of the binder, which was causing
instance dictionaries without dynamic superclass constraints to not have source
locations in their IPE info. Now they do.
Resolves #24005
(cherry picked from commit 69abb1714ade3059593297f3a5faec4c07d1f984)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a9099ed084ed264366d8c972a83cfb18315b84d2">a9099ed0</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-12-13T19:38:08+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 correct FunTyFlag in adjustJoinPointType
As the Lint error in #23952 showed, the function adjustJoinPointType
was failing to adjust the FunTyFlag when adjusting the type.
I don't think this caused the seg-fault reported in the ticket,
but it is definitely. This patch fixes it.
It is tricky to come up a small test case; Krzysztof came up with
this one, but it only triggers a failure in GHC 9.6.
(cherry picked from commit 8e05c54a8cb7e5ad2d584fad5b5ad878dd5488b6)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b71b053e9e9ba03a782feb150f579ebd28c35fe1">b71b053e</a></strong>
<div>
<span> by Andreas Klebinger </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>AArch64: Fix broken conditional jumps for offsets >= 1MB
Rewrite conditional jump instructions with offsets >= 1MB to use unconditional jumps
to avoid overflowing the immediate.
Fixes #23746
(cherry picked from commit 2adc050857a9c1b992040fbfd55fbe65b2851b19)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fc6e4003e291b72e44923429395822e6044e7d05">fc6e4003</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Fix #21712 again
This is a bit of a shot in the dark to fix #24033, which appears to be
another instance of #21712. For some reason the ld-override logic
*still* appears to be active on Darwin targets (or at least one).
Consequently, on misconfigured systems we may choose a non-`ld64`
linker.
It's a bit unclear exactly what happened in #24033 but ultimately the
check added for #21712 was not quite right, checking for the
`ghc_host_os` (the value of which depends upon the bootstrap compiler)
instead of the target platform. Fix this.
Fixes #24033.
(cherry picked from commit f6b2751f58df5f4f83caa7a7ca56e66659d02b09)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d1f94ba77a4a755a25619a95ee16175e2a36ad57">d1f94ba7</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/nonmoving: Fix on LLP64 platforms
Previously `NONMOVING_SEGMENT_MASK` and friends were defined with the `UL`
size suffix. However, this is wrong on LLP64 platforms like Windows,
where `long` is 32-bits.
Fixes #23003.
Fixes #24042.
(cherry picked from commit 8f6010b98f560200997a9d84a4e07bfd0ad6e496)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7a51125dff19a30931b7d47d607267b6c3208597">7a51125d</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: expose rtsOutOfBoundsAccess symbol
(cherry picked from commit cbe4400d2690104053ec544cf7d0a9a13ee914ee)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9283b7d388de8b6c78f938e404d65ce070ed31ff">9283b7d3</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Avoid out-of-bound array access in bigNatIsPowerOf2 (fix #24066)
bigNatIndex# in the `where` clause wasn't guarded by "bigNatIsZero a".
(cherry picked from commit fe0675770b66a9ed393884d96e276b8d116fa2a2)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c284a3e8b1c3a5faa51ec15f00e0cdd287f79a47">c284a3e8</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Bignum: fix right shift of negative BigNat with native backend
(cherry picked from commit cc1625b1ffbdf086b8380bacd35abc8d85861637)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d5de8a2ab9dd732592af152f0a6638ed875d2492">d5de8a2a</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Hadrian: enable `-fcheck-prim-bounds` in validate flavour
This allows T24066 to fail when the bug is present.
Otherwise the out-of-bound access isn't detected as it happens in
ghc-bignum which wasn't compiled with the bounds check.
(cherry picked from commit 72c7380cb780933825bc84924908e01ce0495dc4)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/83775ebb0bbf363d59fef1a7f9802d3981db6558">83775ebb</a></strong>
<div>
<span> by Moritz Angermann </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>CgUtils.fixStgRegStmt respect register width
This change ensure that the reg + offset computation is always of the
same size. Before this we could end up with a 64bit register, and then
add a 32bit offset (on 32bit platforms). This not only would fail type
sanity checking, but also incorrectly truncate 64bit values into 32bit
values silently on 32bit architectures.
(cherry picked from commit dafc47091c9107dcf81e1e80a105f59211927c89)
(cherry picked from commit 8e7a2065e433aa56552b335d420b5bf925082078)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab7bc679a858b692bb0c20684ff5708edf063db6">ab7bc679</a></strong>
<div>
<span> by Moritz Angermann </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>[PEi386 linker] Bounds check and null-deref guard
We should resonably be able to expect that we won't exceed the number of
sections if we assume to be dealing with legal object files. We can however
not guarantee that we get some negative values, and while we try to
special case most, we should exclude negative indexing into the sections
array.
We also need to ensure that we do not try to derefences targetSection,
if it is NULL, due to the switch statement.
(cherry picked from commit df81536f2e53abf521a05eb1e482a076f5849c21)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d35f5d1aba820ef7cf0b8db282ee0cdb5bb2a1e4">d35f5d1a</a></strong>
<div>
<span> by Moritz Angermann </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: section flags for .text$foo only
Commit 3ece9856d157c85511d59f9f862ab351bbd9b38b, was supposed to fix
#22834 in !9810.
It does however add "xr" indiscriminatly to .text sections
even if splitSections is disabled. This leads to the assembler saying:
ghc_1.s:7849:0: error:
Warning: Ignoring changed section attributes for .text
|
7849 | .section .text,"xr"
| ^
(cherry picked from commit e99cf237f84db34be0468a893b10394d6b364bce)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/54617f3bb5db50f119ebc9656ed2288c6f841bae">54617f3b</a></strong>
<div>
<span> by Ilias Tsitsimpis </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>hadrian: Pass -DNOSMP to C compiler when needed
Hadrian passes the -DNOSMP flag to GHC when the target doesn't support
SMP, but doesn't pass it to CC as well, leading to the following
compilation error on mips64el:
| Run Cc (FindCDependencies CDep) Stage1: rts/sm/NonMovingScav.c => _build/stage1/rts/build/c/sm/NonMovingScav.o.d
Command line: /usr/bin/mips64el-linux-gnuabi64-gcc -E -MM -MG -MF _build/stage1/rts/build/c/hooks/FlagDefaults.thr_debug_p_o.d -MT _build/stage1/rts/build/c/hooks/FlagDefaults.o -Irts/include -I_build/stage1/rts/build -I_build/stage1/rts/build/include -Irts/include -x c rts/hooks/FlagDefaults.c -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Winline -Wpointer-arith -Wmissing-noreturn -Wnested-externs -Wredundant-decls -Wundef -fno-strict-aliasing -DTHREADED_RTS -DDEBUG -fomit-frame-pointer -O2 -g -Irts -I_build/stage1/rts/build -DDEBUG -fno-omit-frame-pointer -g3 -O0
===> Command failed with error code: 1
In file included from rts/include/Stg.h:348,
from rts/include/Rts.h:38,
from rts/hooks/FlagDefaults.c:8:
rts/include/stg/SMP.h:416:2: error: #error memory barriers unimplemented on this architecture
416 | #error memory barriers unimplemented on this architecture
| ^~~~~
rts/include/stg/SMP.h:440:2: error: #error memory barriers unimplemented on this architecture
440 | #error memory barriers unimplemented on this architecture
| ^~~~~
rts/include/stg/SMP.h:464:2: error: #error memory barriers unimplemented on this architecture
464 | #error memory barriers unimplemented on this architecture
| ^~~~~
The old make system correctly passed this flag to both GHC and CC [1].
Fix this error by passing -DNOSMP to CC as well.
[1] https://gitlab.haskell.org/ghc/ghc/-/blob/00920f176b0235d5bb52a8e054d89a664f8938fe/rts/ghc.mk#L407
Closes #24082
(cherry picked from commit 257c2807587624592813a42e06a05c5fc34cb38c)
(cherry picked from commit b2a03315f6336e2708ff54689f2241eb38198dd5)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f9ff2f0647f70e25726d2454fe11e49a5ca095b3">f9ff2f06</a></strong>
<div>
<span> by Moritz Angermann </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>[PEi386] Mask SYM_TYPE_DUP_DISCARD in makeSymbolExtra
48e391952c17ff7eab10b0b1456e3f2a2af28a9b
introduced `SYM_TYPE_DUP_DISCARD` to the bitfield.
The linker however, failed to mask the `SYM_TYPE_DUP_DISCARD` value.
Thus `== SYM_TYPE_CODE` comparisons easily failed. This lead to us
relocating DATA lookups (GOT) into E8 (call) and E9 (jump) instructions.
(cherry picked from commit 34f06334025521c2440ebedb0237697fbcc3c6de)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9397af86c8d5f3dc12c3831813e7f6ca6edd4f40">9397af86</a></strong>
<div>
<span> by Claudio Bley </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Only exit ghci in -e mode when :add command fails
Previously, when running `ghci -e ':add Sample.hs'` the process would
exit with exit code 1 if the file exists and could be loaded.
Fixes #24115
(cherry picked from commit d561073727186c7b456c9ef113ccb7fc0df4560e)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/aee7728acd04eecf12f1e3411dfb50e4e86b33eb">aee7728a</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-13T20:20:02+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>driver: Don't lose track of nodes when we fail to resolve cycles
The nodes that take part in a cycle should include both hs-boot and hs files,
but when we fail to resolve a cycle, we were only counting the nodes from the
graph without boot files.
Fixes #24196
(cherry picked from commit 8db8d2fd1c881032b1b360c032b6d9d072c11723)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1ae57288cabdd818180f38c9f55d8da8ac4c1d0c">1ae57288</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-15T17:17:29+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 unusable units and module reexport interaction (#21097)
This commit fixes an issue with ModUnusable introduced in df0f148feae.
In mkUnusableModuleNameProvidersMap we traverse the list of unusable
units and generate ModUnusable origin for all the modules they contain:
exposed modules, hidden modules, and also re-exported modules. To do
this we have a two-level map:
ModuleName -> Unit:ModuleName (aka Module) -> ModuleOrigin
So for each module name "M" in broken unit "u" we have:
"M" -> u:M -> ModUnusable reason
However in the case of module reexports we were using the *target*
module as a key. E.g. if "u:M" is a reexport for "X" from unit "o":
"M" -> o:X -> ModUnusable reason
Case 1: suppose a reexport without module renaming (u:M -> o:M) from
unusable unit u:
"M" -> o:M -> ModUnusable reason
Here it's claiming that the import of M is unusable because a reexport
from u is unusable. But if unit o isn't unusable we could also have in
the map:
"M" -> o:M -> ModOrigin ...
Issue: the Semigroup instance of ModuleOrigin doesn't handle the case
(ModUnusable <> ModOrigin)
Case 2: similarly we could have 2 unusable units reexporting the same module
without renaming, say (u:M -> o:M) and (v:M -> o:M) with u and v
unusable. It gives:
"M" -> o:M -> ModUnusable ... (for u)
"M" -> o:M -> ModUnusable ... (for v)
Issue: the Semigroup instance of ModuleOrigin doesn't handle the case
(ModUnusable <> ModUnusable).
This led to #21097, #16996, #11050.
To fix this, in this commit we make ModUnusable track whether the module
used as key is a reexport or not (for better error messages) and we use
the re-export module as key. E.g. if "u:M" is a reexport for "o:X" and u
is unusable, we now record:
"M" -> u:M -> ModUnusable reason reexported=True
So now, we have two cases for a reexport u:M -> o:X:
- u unusable: "M" -> u:M -> ModUnusable ... reexported=True
- u usable: "M" -> o:X -> ModOrigin ... reexportedFrom=u:M
The second case is indexed with o:X because in this case the Semigroup
instance of ModOrigin is used to combine valid expositions of a module
(directly or via reexports).
Note that module lookup functions select usable modules first (those who
have a ModOrigin value), so it doesn't matter if we add new ModUnusable
entries in the map like this:
"M" -> {
u:M -> ModUnusable ... reexported=True
o:M -> ModOrigin ...
}
The ModOrigin one will be used. Only if there is no ModOrigin or
ModHidden entry will the ModUnusable error be printed. See T21097 for an
example printing several reasons why an import is unusable.
(cherry picked from commit cee81370cd6ef256f66035e3116878d4cb82e28b)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cc1097f38ecf92a4e774763c4d092544398993d8">cc1097f3</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:29+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>driver: Ensure we actually clear the interactive context before reloading
Previously we called discardIC, but immediately after set the session
back to an old HscEnv that still contained the IC
Partially addresses #24107
Fixes #23405
(cherry picked from commit fa148f6ed43f915f2ae40302dda1b8bae39512af)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cd61dd26cc7f290d3865c6e60cc384158a7982ce">cd61dd26</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:29+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>driver: Ensure we force the lookup of old build artifacts before returning the build plan
This prevents us from retaining all previous build artifacts in memory until a
recompile finishes, instead only retaining the exact artifacts we need.
Fixes #24118
(cherry picked from commit a62d4cb25b805dd7e12476db97a667fd542ea006)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/33b3ff8a100cdb23b8cedd0e45f2a9b8950a5a47">33b3ff8a</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:29+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 test for #24118 and #24107
MultiLayerModulesDefsGhci was not able to catch the leak because it uses
:l which discards the previous environment.
Using :r catches both of these leaks
(cherry picked from commit 244d3315352376eb7b946843fb0c512412842d7d)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/27fec1c3e85cee0d081ed4c0687a4662c6e33b14">27fec1c3</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:29+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Add some strictness annotations to ImportSpec and related constructors
This prevents us from retaining entire HscEnvs.
Force these ImportSpecs when forcing the GlobalRdrEltX
Adds an NFData instance for Bag
Fixes #24107
(cherry picked from commit 306cb4e3e02e466f6c5a57c1a65fd2a5d13b3f89)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/74fa25f03f1f67317ef094cb3aa1f64bd75bdddf">74fa25f0</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Force IfGlobalRdrEnv in NFData instance.
(cherry picked from commit 77a3b580f561e62f5ac7ebf6588199575aafd3b4)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2e4b7832d1dae8295c184ef29f91161b74ba5cfc">2e4b7832</a></strong>
<div>
<span> by Pierre Le Marre </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 to Unicode 15.1.0
See: https://www.unicode.org/versions/Unicode15.1.0/
(cherry picked from commit 778c84b61679a8bb9dd83e2c41156abc0f39abd3)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b8eac3cf116715c7371d10c859a3551265e187aa">b8eac3cf</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 an extra check in kcCheckDeclHeader_sig
Fix #24083 by checking for a implicitly-scoped type variable that is not
actually bound. See Note [Disconnected type variables] in GHC.Tc.Gen.HsType
For some reason, on aarch64-darwin we saw a 2.8% decrease in compiler
allocations for MultiLayerModulesTH_Make; but 0.0% on other architectures.
Metric Decrease:
MultiLayerModulesTH_Make
(cherry picked from commit 6dbab1808bfbe484b3fb396aab1d105314f918d8)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/110efc9813ba5f68668ab7fc3f95b9febca52880">110efc98</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Second fix to #24083
My earlier fix turns out to be too aggressive for data/type families
See wrinkle (DTV1) in Note [Disconnected type variables]
(cherry picked from commit 2776920e642544477a38d0ed9205d4f0b48a782e)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/01b8a66ba182ab0c9946f87df02984c03f18329e">01b8a66b</a></strong>
<div>
<span> by Alexis King </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 store the async exception masking state in CATCH frames
(cherry picked from commit 8b61dfd6dfc78bfa6bb9449dac9a336e5d668b5e)
(cherry picked from commit e538003c33251c5c843cac1e30b36f88bb859778)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cfbf9aa988ec1989536c77d5bb130795f8cbba4d">cfbf9aa9</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Bump array submodule to 0.5.6.0
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bd31c2bb4f7a138fb22734aeee2da96a9da63470">bd31c2bb</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>libraries: Bump filepath to 1.4.200.1 and unix to 2.8.4.0
Updates filepath submodule
Updates unix submodule
Fixes #24240
(cherry picked from commit 36b9a38cc45a26865c4e45f4949e519a5dede76d)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/207f897a5b2c8ee50c6ec812b60a0b3bb377f396">207f897a</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Submodule linter: Allow references to tags
We modify the submodule linter so that if the bumped commit is a
specific tag then the commit is accepted.
Fixes #24241
(cherry picked from commit 91ff0971df64b04938d011fe1562320c5d90849a)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1fa23f4358e0042bcf84b4103b8040e7ee05510d">1fa23f43</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>hadrian: set -Wno-deprecations for directory and Win32
The filepath bump to 1.4.200.1 introduces a deprecation warning.
See https://gitlab.haskell.org/ghc/ghc/-/issues/24240
https://github.com/haskell/filepath/pull/206
(cherry picked from commit 86f652dc9a649e59e643609c287a510a565f5408)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/76bc5445e9421dfb7aff8426d480c423c6d23164">76bc5445</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 thunk update ordering
Previously we attempted to ensure soundness of concurrent thunk update
by synchronizing on the access of the thunk's info table pointer field.
This was believed to be sufficient since the indirectee (which may
expose a closure allocated by another core) would not be examined
until the info table pointer update is complete.
However, it turns out that this can result in data races in the presence
of multiple threads racing a update a single thunk. For instance,
consider this interleaving under the old scheme:
Thread A Thread B
--------- ---------
t=0 Enter t
1 Push update frame
2 Begin evaluation
4 Pause thread
5 t.indirectee=tso
6 Release t.info=BLACKHOLE
7 ... (e.g. GC)
8 Resume thread
9 Finish evaluation
10 Relaxed t.indirectee=x
11 Load t.info
12 Acquire fence
13 Inspect t.indirectee
14 Release t.info=BLACKHOLE
Here Thread A enters thunk `t` but is soon paused, resulting in `t`
being lazily blackholed at t=6. Then, at t=10 Thread A finishes
evaluation and updates `t.indirectee` with a relaxed store.
Meanwhile, Thread B enters the blackhole. Under the old scheme this
would introduce an acquire-fence but this would only synchronize with
Thread A at t=6. Consequently, the result of the evaluation, `x`, is not
visible to Thread B, introducing a data race.
We fix this by treating the `indirectee` field as we do all other
mutable fields. This means we must always access this field with
acquire-loads and release-stores.
See #23185.
(cherry picked from commit fa63b5902389aa929af5ec04b93b601fd456633f)
(cherry picked from commit fcfb0850d1960b677a2f6b9bdf45d8ccef169aeb)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2de058908c0c379847c96a06ca2823ce257dcc3a">2de05890</a></strong>
<div>
<span> by Bryan Richter </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Work around perf note fetch failure
Addresses #24055.
(cherry picked from commit 63afb701a1638d7bd32c34fb24a9fd3ff897b634)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/592e41e2250a63315bc0cf4e2052c964231fe7dd">592e41e2</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:17:30+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Bump haddock submodule to 2.29.2
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30d1b64382359cd007253e702ac9683753d9f47e">30d1b643</a></strong>
<div>
<span> by Moritz Angermann </span> <i> at 2023-12-15T17:17:40+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Drop hard Xcode dependency
XCODE_VERSION calls out to `xcodebuild`, which is only available
when having `Xcode` installed. The CommandLineTools are not
sufficient. To install Xcode, you must have an apple id to download
the Xcode.xip from apple.
We do not use xcodebuild anywhere in our build explicilty. At best
it appears to be a proxy for checking the linker or the compiler.
These should rather be done with
```
xcrun ld -version
```
or similar, and not by proxy through Xcode. The CLR should be
sufficient for building software on macOS.
(cherry picked from commit a3ee3b99e6889fd68da75c6ea7a14d101f71da56)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5a77075c9263cef383393a8b2fb012e0a3146101">5a77075c</a></strong>
<div>
<span> by Matthew Craven </span> <i> at 2023-12-15T17:39:36+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Make 'wWarningFlagsDeps' include every WarningFlag
Fixes #24071.
(cherry picked from commit a2c0fff61afdb14b5f2624374aa5767e7b238ff4)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/31bc85753b2ea14f5d5eec747ca128b22adc2902">31bc8575</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:40:16+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/eventlog: Fix off-by-one in assertion
Previously we failed to account for the NULL terminator `postString`
asserted that there is enough room in the buffer for the string.
(cherry picked from commit d0b17576148d336b67c7d65bcf742f83001413cb)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a62134f2592d3de588e988f56d0590a70db552fe">a62134f2</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:40:25+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/eventlog: Honor result of ensureRoomForVariableEvent is
Previously we would keep plugging along, even if isn't enough room for
the event.
(cherry picked from commit a10f9b9bc510051a5b47d31238aad1174f7a1966)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/472582dcc2f6151a6cfaebc08710ee1600e59d31">472582dc</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:40:34+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/eventlog: Avoid truncating event sizes
Previously ensureRoomForVariableEvent would truncate the desired size to
16-bits, resulting in #24197.
Fixes #24197.
(cherry picked from commit 0e0f41c0e3d9c67fc669e975060e88bccdc7d823)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/65699dd6a869ef33d262074104e330398919ae2f">65699dd6</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:41:37+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/EventLog: Place eliminate duplicate strlens
Previously many of the `post*` implementations would first compute the
length of the event's strings in order to determine the event length.
Later we would then end up computing the length yet again in
`postString`. Now we instead pass the string length to `postStringLen`,
avoiding the repeated work.
(cherry picked from commit c350df3ce0e5c207b90eb3e74e04c77826c56283)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/392366780b56053cace250edb801b5b0bce0380f">39236678</a></strong>
<div>
<span> by Ben Gamari </span> <i> at 2023-12-15T17:41:45+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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/eventlog: Place upper bound on IPE string field lengths
The strings in IPE events may be of unbounded length. Limit the lengths
of these fields to 64k characters to ensure that we don't exceed the
maximum event length.
(cherry picked from commit 9340d9987abe2ebf7f66659ffc48a822586f6edd)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bc444199176d6491fb50347cff4a8abaf3012e9f">bc444199</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T17:41:51+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: drop unused postString function
(cherry picked from commit 6e03bfdfdb74de2a8b51d3008233392a6f0a9965)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5ac485d289569dbed00a764f07ed388d41a563f6">5ac485d2</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-15T19:04:19+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Bump base to 4.18.2.0 and add changelog
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1405682ab5c7ca084c5719512b9e8dfa80edb4b6">1405682a</a></strong>
<div>
<span> by Sebastian Graf </span> <i> at 2023-12-15T19:51:47+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Cpr: Turn an assertion into a check to deal with some dead code (#23862)
See the new `Note [Dead code may contain type confusions]`.
Fixes #23862.
(cherry picked from commit 57c391c463f26b7025df9b340ad98416cff1d2b2)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/123b0cf7640689a3bf0b63496ace713cdb680b6f">123b0cf7</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-12-18T14:56:22+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>ghcup-metadata: Use dynamically linked alpine bindists
In theory these will work much better on alpine to allow people to build
statically linked applications there. We don't need to distribute a
statically linked application ourselves in order to allow that.
Fixes #23602
(cherry picked from commit e524fa7f67259a093aeb21aada139137626c581c)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/de70b89d88cdf5327f93c620585451b7625b1d27">de70b89d</a></strong>
<div>
<span> by Rodrigo Mesquita </span> <i> at 2023-12-18T14:56:22+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Suppress duplicate librares linker warning of new macOS linker
Fixes #24167
XCode 15 introduced a new linker which warns on duplicate libraries being
linked. To disable this warning, we pass -Wl,-no_warn_duplicate_libraries as
suggested by Brad King in CMake issue #25297.
This flag isn't necessarily available to other linkers on darwin, so we must
only configure it into the CC linker arguments if valid.
(cherry picked from commit e98051a5e7251390799f9fdead988c61d72e82e3)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/273f5a3fd392d528664d5661508cc0094e37ec0d">273f5a3f</a></strong>
<div>
<span> by Rodrigo Mesquita </span> <i> at 2023-12-18T20:33:03+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>darwin: Fix single_module is obsolete warning
In XCode 15's linker, -single_module is the default and otherwise
passing it as a flag results in a warning being raised:
ld: warning: -single_module is obsolete
This patch fixes this warning by, at configure time, determining whether
the linker supports -single_module (which is likely false for all
non-darwin linkers, and true for darwin linkers in previous versions of
macOS), and using that information at runtime to decide to pass or not
the flag in the invocation.
Fixes #24168
(cherry picked from commit e6c803f702e8b09dfd0073b973b8afcd7071db50)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/000a6a8f5e5307e93e3209da3bbbb3417b3ee4df">000a6a8f</a></strong>
<div>
<span> by Josh Meredith </span> <i> at 2023-12-18T20:33:03+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: fix bounds checking (Issue 23123)
* For ByteArray-based bounds-checking, the JavaScript backend must use the
`len` field, instead of the inbuild JavaScript `length` field.
* Range-based operations must also check both the start and end of the range
for bounds
* All indicies are valid for ranges of size zero, since they are essentially no-ops
* For cases of ByteArray accesses (e.g. read as Int), the end index is
(i * sizeof(type) + sizeof(type) - 1), while the previous implementation
uses (i + sizeof(type) - 1). In the Int32 example, this is (i * 4 + 3)
* IndexByteArrayOp_Word8As* primitives use byte array indicies (unlike
the previous point), but now check both start and end indicies
* Byte array copies now check if the arrays are the same by identity and
then if the ranges overlap.
(cherry picked from commit 116d7312ec4c76f75a26bd0ad2b2815710049e0e)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d86cd08b26822f5868b0b201c67661aebb43f308">d86cd08b</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2023-12-18T20:40:08+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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 remaining issues with bound checking (#23123)
While fixing these I've also changed the way we store addresses into
ByteArray#. Addr# are composed of two parts: a JavaScript array and an
offset (32-bit number).
Suppose we want to store an Addr# in a ByteArray# foo at offset i.
Before this patch, we were storing both fields as a tuple in the "arr"
array field:
foo.arr[i] = [addr_arr, addr_offset];
Now we only store the array part in the "arr" field and the offset
directly in the array:
foo.dv.setInt32(i, addr_offset):
foo.arr[i] = addr_arr;
It avoids wasting space for the tuple.
(cherry picked from commit 2d5c1ddecf195da9a8ee4f7b38fbb79d3b680aeb)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/34e8cf3cc98295da62c316f3b4dc5507151947bc">34e8cf3c</a></strong>
<div>
<span> by Matthew Pickering </span> <i> at 2023-12-18T23:29:39+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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: Fix T21097b test with make 4.1 (deb9)
cee81370cd6ef256f66035e3116878d4cb82e28b recently added a test which
failed on deb9 because the version of make was emitting the recipe
failure to stdout rather than stderr.
One way to fix this is to be more precise in the test about which part
of the output we care about inspecting.
(cherry picked from commit bad3765668cc5badf5d0a19100fac95125985473)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/908c485f27b62961cb2798a373958f5c73734beb">908c485f</a></strong>
<div>
<span> by Zubin Duggal </span> <i> at 2023-12-18T23:29:42+05:30 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","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;'>Prepare release 9.6.4
Metric Decrease:
T13701
</pre>
</li>
</ul>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
30 changed files:
</h4>
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<a href="#906f88b2ba5bce224c8a08c72cea531fdb95ca55">
compiler/GHC/Settings.hs
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<a href="#6740fa77d6598a0ef908509264d676d65ab31fd1">
compiler/GHC/Settings/IO.hs
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<a href="#9d790ca611a17d0b485f5d79e362962120d86f89">
compiler/GHC/Stg/Debug.hs
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<a href="#2f341f858154eb8e1900d5bd92a156b13ddd06f3">
compiler/GHC/StgToCmm/Bind.hs
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<a href="#a7fcc734b34b00498cf1eb5792d2f328ca3696ea">
compiler/GHC/StgToCmm/CgUtils.hs
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<a href="#7aacab42136b6e01e6108ff2271c3d4b427b01de">
compiler/GHC/StgToJS/Linker/Utils.hs
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<a href="#e09f1e9480e87656c84c1bbb39c1441b7884819d">
compiler/GHC/StgToJS/Prim.hs
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