September 2025 - ghc-commits

[Git][ghc/ghc][wip/9.12.3-backports] 7 commits: Bump text submodule to 2.1.3
by Zubin (＠wz1000) 17 Sep '25

17 Sep '25

Zubin pushed to branch wip/9.12.3-backports at Glasgow Haskell Compiler / GHC Commits: 8eb036cc by Zubin Duggal at 2025-09-18T00:07:00+05:30 Bump text submodule to 2.1.3 (cherry picked from commit a802551af0caed8ecb6c7f5722dcaf7e545f0b69) - - - - - d82ca1a4 by Zubin Duggal at 2025-09-18T00:07:00+05:30 bump unix to 2.8.7.0 (cherry picked from commit f3d00969a454a2f043f5571ea54e52fbdf614080) - - - - - e27ff4b8 by Zubin Duggal at 2025-09-18T00:07:00+05:30 Bump os-string submodule to 2.0.8 - - - - - c66462ac by Zubin Duggal at 2025-09-18T00:07:00+05:30 Set -Wno-unused-imports for os-string Metric Increase: T13035 T9198 Metric Decrease: MultiLayerModulesTH_OneShot (cherry picked from commit cc5b555001d43af3a0ae990f532ba433b7079568) - - - - - cf6bc7a3 by Zubin Duggal at 2025-09-18T00:12:00+05:30 Bump exceptions submodule to 0.10.10 - - - - - 6efdd6c8 by Zubin Duggal at 2025-09-18T00:12:00+05:30 Bump time to 1.15 - - - - - f2a7e807 by Zubin Duggal at 2025-09-18T00:12:00+05:30 Prepare 9.12.3 - - - - - 14 changed files: - configure.ac - docs/users_guide/9.12.3-notes.rst - hadrian/src/Settings/Warnings.hs - libraries/base/base.cabal.in - libraries/base/changelog.md - libraries/exceptions - libraries/os-string - libraries/process - libraries/text - libraries/time - libraries/unix - testsuite/driver/testlib.py - testsuite/tests/driver/T20604/T20604.stdout - testsuite/tests/polykinds/T14172.stderr Changes: ===================================== configure.ac ===================================== @@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12.2], [glasgow-ha AC_CONFIG_MACRO_DIRS([m4]) # Set this to YES for a released version, otherwise NO -: ${RELEASE=YES} +: ${RELEASE=NO} # The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line # above. If this is not a released version, then we will append the ===================================== docs/users_guide/9.12.3-notes.rst ===================================== @@ -13,6 +13,83 @@ Compiler - Fixed re-exports of ``MkSolo`` and ``MkSolo#`` (:ghc-ticket:`25182`) - Fixed the behavior of ``Language.Haskell.TH.mkName "FUN"`` (:ghc-ticket:`25174`) +- Fixed miscompilation involving ``zonkEqTypes`` on ``AppTy/AppTy`` (:ghc-ticket:`26256`) +- Fixed CprAnal to detect recursive newtypes (:ghc-ticket:`25944`) +- Fixed specialisation of incoherent instances (:ghc-ticket:`25883`) +- Fixed bytecode generation for ``tagToEnum# <LITERAL>`` (:ghc-ticket:`25975`) +- Fixed panic with EmptyCase and RequiredTypeArguments (:ghc-ticket:`25004`) +- Fixed ``tyConStupidTheta`` to handle ``PromotedDataCon`` (:ghc-ticket:`25739`) +- Fixed unused import warnings for duplicate record fields (:ghc-ticket:`24035`) +- Fixed lexing of ``"\^\"`` (:ghc-ticket:`25937`) +- Fixed string gap collapsing (:ghc-ticket:`25784`) +- Fixed lexing of comments in multiline strings (:ghc-ticket:`25609`) +- Made unexpected LLVM versions a warning rather than an error (:ghc-ticket:`25915`) +- Disabled ``-fprof-late-overloaded-calls`` for join points to avoid invalid transformations +- Fixed bugs in ``integerRecipMod`` and ``integerPowMod`` (:ghc-ticket:`26017`) +- Fixed ``naturalAndNot`` for NB/NS case (:ghc-ticket:`26230`) +- Fixed ``ds_ev_typeable`` to use ``mkTrAppChecked`` (:ghc-ticket:`25998`) +- Fixed GHC settings to always unescape escaped spaces (:ghc-ticket:`25204`) +- Fixed issue with HasCallStack constraint caching (:ghc-ticket:`25529`) +- Fixed archive member size writing logic in ``GHC.SysTools.Ar`` (:ghc-ticket:`26120`, :ghc-ticket:`22586`) + +Runtime System +~~~~~~~~~~~~~~ + +- Fixed ``MessageBlackHole.link`` to always be a valid closure +- Fixed handling of WHITEHOLE in ``messageBlackHole`` (:ghc-ticket:`26205`) +- Fixed ``rts_clearMemory`` logic when sanity checks are enabled (:ghc-ticket:`26011`) +- Fixed underflow frame lookups in the bytecode interpreter (:ghc-ticket:`25750`) +- Fixed overflows and reentrancy in interpreter statistics calculation (:ghc-ticket:`25756`) +- Fixed INTERP_STATS profiling code (:ghc-ticket:`25695`) +- Removed problematic ``n_free`` variable from nonmovingGC (:ghc-ticket:`26186`) +- Fixed incorrect format specifiers in era profiling +- Improved documentation of SLIDE and PACK bytecode instructions +- Eliminated redundant ``SLIDE x 0`` bytecode instructions +- Fixed compile issues on powerpc64 ELF v1 + +Code Generation +~~~~~~~~~~~~~~~ + +- Fixed LLVM built-in variable predicate (was checking ``$llvm`` instead of ``@llvm``) +- Fixed linkage of built-in arrays for LLVM (:ghc-ticket:`25769`) +- Fixed code generation for SSE vector operations (:ghc-ticket:`25859`) +- Fixed ``bswap64`` code generation on i386 (:ghc-ticket:`25601`) +- Fixed sub-word arithmetic right shift on AArch64 (:ghc-ticket:`26061`) +- Fixed LLVM vector literal emission to include type information +- Fixed LLVM version detection +- Fixed typo in ``padLiveArgs`` that caused segfaults (:ghc-ticket:`25770`, :ghc-ticket:`25773`) +- Fixed constant-folding for Word->Float bitcasts +- Added surface syntax for Word/Float bitcast operations +- Fixed ``MOVD`` format in x86 NCG for ``unpackInt64X2#`` +- Added ``-finter-module-far-jumps`` flag for AArch64 +- Fixed RV64 J instruction handling for non-local jumps (:ghc-ticket:`25738`) +- Reapplied division by constants optimization +- Fixed TNTC to set CmmProc entry_label properly (:ghc-ticket:`25565`) + +Linker +~~~~~~ + +- Improved efficiency of proddable blocks structure (:ghc-ticket:`26009`) +- Fixed Windows DLL loading to avoid redundant ``LoadLibraryEx`` calls (:ghc-ticket:`26009`) +- Fixed incorrect use of ``break`` in nested for loop (:ghc-ticket:`26052`) +- Fixed linker to not fail due to ``RTLD_NOW`` (:ghc-ticket:`25943`) +- Dropped obsolete Windows XP compatibility checks + +GHCi +~~~~ + +- Fixed ``mkTopLevEnv`` to use ``loadInterfaceForModule`` instead of ``loadSrcInterface`` (:ghc-ticket:`25951`) + +Template Haskell +~~~~~~~~~~~~~~~~ + +- Added explicit export lists to all remaining template-haskell modules + +Build system +~~~~~~~~~~~~~~~~ + +- Exposed all of Backtraces' internals for ghc-internal (:ghc-ticket:`26049`) +- Fixed cross-compilation configuration override (:ghc-ticket:`26236`) Included libraries ~~~~~~~~~~~~~~~~~~ ===================================== hadrian/src/Settings/Warnings.hs ===================================== @@ -43,7 +43,9 @@ ghcWarningsArgs = do , package base ? pure [ "-Wno-trustworthy-safe" ] , package binary ? pure [ "-Wno-deprecations" ] , package bytestring ? pure [ "-Wno-inline-rule-shadowing" ] - , package compiler ? pure [ "-Wcpp-undef" ] + , package compiler ? pure [ "-Wcpp-undef" + , "-Wno-deprecations" + ] , package directory ? pure [ "-Wno-unused-imports" , "-Wno-deprecations" -- https://gitlab.haskell.org/ghc/ghc/-/issues/24240 ] @@ -63,6 +65,7 @@ ghcWarningsArgs = do , "-Wno-redundant-constraints" , "-Wno-simplifiable-class-constraints" , "-Wno-deriving-typeable" ] + , package osString ? pure [ "-Wno-unused-imports" ] , package pretty ? pure [ "-Wno-unused-imports" ] , package primitive ? pure [ "-Wno-unused-imports" , "-Wno-deprecations" ] ===================================== libraries/base/base.cabal.in ===================================== @@ -4,7 +4,7 @@ cabal-version: 3.0 -- Make sure you are editing ghc-experimental.cabal.in, not ghc-experimental.cabal name: base -version: 4.21.0.0 +version: 4.21.1.0 -- NOTE: Don't forget to update ./changelog.md license: BSD-3-Clause ===================================== libraries/base/changelog.md ===================================== @@ -1,10 +1,8 @@ # Changelog for [`base` package](http://hackage.haskell.org/package/base) -## 4.21.2.0 *Sept 2024* - * Fix bug where `naturalAndNot` was incorrectly truncating results ([CLC proposal #350](github.com/haskell/core-libraries-committee/issues/350)) - ## 4.21.1.0 *Sept 2024* * Fix incorrect results of `integerPowMod` when the base is 0 and the exponent is negative, and `integerRecipMod` when the modulus is zero ([#26017](https://gitlab.haskell.org/ghc/ghc/-/issues/26017)). + * Fix bug where `naturalAndNot` was incorrectly truncating results ([CLC proposal #350](github.com/haskell/core-libraries-committee/issues/350)) ## 4.21.0.0 *December 2024* * Shipped with GHC 9.12.1 ===================================== libraries/exceptions ===================================== @@ -1 +1 @@ -Subproject commit 8e55b720f45db91f4895f710863ef9dbc10fe569 +Subproject commit b3a88ccc70acd7aa83be64235ab8c3ef1f08e96b ===================================== libraries/os-string ===================================== @@ -1 +1 @@ -Subproject commit 4b5efedcd2da9314edda80d973a44e67020370db +Subproject commit c08666bf7bf528e607fc1eacc20032ec59e69df3 ===================================== libraries/process ===================================== @@ -1 +1 @@ -Subproject commit 9c3bfc214c72bbd0c8a30a1c41465deed0feaf47 +Subproject commit f7d51387ba7f7f6079f3a9d5ce011ad9359b7dbb ===================================== libraries/text ===================================== @@ -1 +1 @@ -Subproject commit b86564cae8d7262c7c4e7afe7a9163c83de3f175 +Subproject commit 5f343f668f421bfb30cead594e52d0ac6206ff67 ===================================== libraries/time ===================================== @@ -1 +1 @@ -Subproject commit e5c5d1987011efe88a21ab6ded45aaa33a16274f +Subproject commit 507f50844802f1469ba6cadfeefd4e3fecee0416 ===================================== libraries/unix ===================================== @@ -1 +1 @@ -Subproject commit 74ae1c0d9dd1518434f7d6cd3e63d7769599e0f9 +Subproject commit 90e7d70de337ad759102b2445ebef6980684a9d3 ===================================== testsuite/driver/testlib.py ===================================== @@ -1725,7 +1725,7 @@ async def do_test(name: TestName, dst_makefile = in_testdir('Makefile') if src_makefile.exists(): makefile = src_makefile.read_text(encoding='UTF-8') - makefile = re.sub('TOP=.*', 'TOP=%s' % config.top, makefile, 1) + makefile = re.sub('TOP=.*', 'TOP=%s' % config.top, makefile, count=1) dst_makefile.write_text(makefile, encoding='UTF-8') if opts.pre_cmd: ===================================== testsuite/tests/driver/T20604/T20604.stdout ===================================== @@ -1,5 +1,11 @@ A1 A -addDependentFile "/home/teo/git/ghc/_build/stage1/lib/../lib/x86_64-linux-ghc-9.11.20240508/libHSghc-prim-0.11.0-inplace-ghc9.11.20240508.so" a63ccfcae8455a0abc22cfbd2ee0fee4 -addDependentFile "/home/teo/git/ghc/_build/stage1/lib/../lib/x86_64-linux-ghc-9.11.20240508/libHSghc-bignum-1.3-inplace-ghc9.11.20240508.so" fe8ae214b210d7ae50739f9b74c6d3bc -addDependentFile "/home/teo/git/ghc/_build/stage1/lib/../lib/x86_64-linux-ghc-9.11.20240508/libHSghc-internal-9.1001.0-inplace-ghc9.11.20240508.so" cce9e35d3fb6c65a080cdb8a570f3caf +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/ghc-prim-0.12.0-inplace/libHSghc-prim-0.12.0-inplace.a" 019a1208b8742850eeb197adcf0445f3 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/ghc-bignum-1.3-inplace/libHSghc-bignum-1.3-inplace.a" ca54044c2ea501531ac3016a72a9d92b +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/ghc-internal-9.1002.0-inplace/libHSghc-internal-9.1002.0-inplace.a" 1c2b59e426d6ae9172eb46d890155e19 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/base-4.20.2.0-inplace/libHSbase-4.20.2.0-inplace.a" 820a64d9cb81281e10660ded650e973f +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/ghc-boot-th-9.10.2.20250728-inplace/libHSghc-boot-th-9.10.2.20250728-inplace.a" 47565629d3614763d649bde91000bf42 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/array-0.5.8.0-inplace/libHSarray-0.5.8.0-inplace.a" 7fb37d6d03900a689d24212e83d3f729 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/deepseq-1.5.0.0-inplace/libHSdeepseq-1.5.0.0-inplace.a" 316be3ed9f3b5e893b2eb9924f8bb698 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/pretty-1.1.3.6-inplace/libHSpretty-1.1.3.6-inplace.a" ab975b458837cd4dd7a38be2c7e71603 +addDependentFile "/home/zubin/ghcs/unicode-lex/_build_devel2/stage1/lib/../lib/x86_64-linux-ghc-9.10.2.20250728/template-haskell-2.22.0.0-inplace/libHStemplate-haskell-2.22.0.0-inplace.a" 8520e0f59701ce4073df664d176ade9c ===================================== testsuite/tests/polykinds/T14172.stderr ===================================== @@ -1,6 +1,6 @@ T14172.hs:7:46: error: [GHC-88464] - • Found type wildcard ‘_’ standing for ‘a'1 :: k0’ - Where: ‘k0’ is an ambiguous type variable + • Found type wildcard ‘_’ standing for ‘a'1 :: k30’ + Where: ‘k30’ is an ambiguous type variable ‘a'1’ is an ambiguous type variable To use the inferred type, enable PartialTypeSignatures • In the first argument of ‘h’, namely ‘_’ View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9a280a8dc29e92889d55ab860f2275… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9a280a8dc29e92889d55ab860f2275… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/hash-c-no-hacks
by Cheng Shao (＠TerrorJack) 17 Sep '25

17 Sep '25

Cheng Shao pushed new branch wip/hash-c-no-hacks at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/hash-c-no-hacks You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/no-has-visibility-hidden
by Cheng Shao (＠TerrorJack) 17 Sep '25

17 Sep '25

Cheng Shao pushed new branch wip/no-has-visibility-hidden at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/no-has-visibility-hidden You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/batch-loaddll] 17 commits: Use mkVirtHeapOffsets for reconstructing terms in RTTI
by Cheng Shao (＠TerrorJack) 17 Sep '25

17 Sep '25

Cheng Shao pushed to branch wip/batch-loaddll at Glasgow Haskell Compiler / GHC Commits: 8f3d80ff by Luite Stegeman at 2025-09-13T08:43:09+02:00 Use mkVirtHeapOffsets for reconstructing terms in RTTI This makes mkVirtHeapOffsets the single source of truth for finding field offsets in closures. - - - - - eb389338 by Luite Stegeman at 2025-09-13T08:43:09+02:00 Sort non-pointer fields by size for more efficient packing This sorts non-pointer fields in mkVirtHeapOffsets, always storing the largest field first. The relative order of equally sized fields remains unchanged. This reduces wasted padding/alignment space in closures with differently sized fields. - - - - - 99b233f4 by Alison at 2025-09-13T16:51:04-04:00 ghc-heap: Fix race condition with profiling builds Apply the same fix from Closures.hs (64fd0fac83) to Heap.hs by adding empty imports to make way-dependent dependencies visible to `ghc -M`. Fixes #15197, #26407 - - - - - 77deaa7a by Cheng Shao at 2025-09-14T21:29:45-04:00 hadrian: build in-tree gmp with -fvisibility=hidden When hadrian builds in-tree gmp, it should build the shared objects with -fvisibility=hidden. The gmp symbols are only used by bignum logic in ghc-internal and shouldn't be exported by the ghc-internal shared library. We should always strive to keep shared library symbol table lean, which benefits platforms with slow dynamic linker or even hard limits about how many symbols can be exported (e.g. macos dyld, win32 dll and wasm dyld). - - - - - 42a18960 by Cheng Shao at 2025-09-14T21:30:26-04:00 Revert "wasm: add brotli compression for ghci browser mode" This reverts commit 731217ce68a1093b5f9e26a07d5bd2cdade2b352. Benchmarks show non-negligible overhead when browser runs on the same host, which is the majority of actual use cases. - - - - - e6755b9f by Cheng Shao at 2025-09-14T21:30:26-04:00 wasm: remove etag logic in ghci browser mode web server This commit removes the etag logic in dyld script's ghci browser mode web server. It was meant to support caching logic of wasm shared libraries, but even if the port is manually specified to make caching even relevant, for localhost the extra overhead around etag logic is simply not worth it according to benchmarks. - - - - - ac5859b9 by sheaf at 2025-09-16T14:58:38-04:00 Add 'Outputable Natural' instance This commit adds an Outputable instance for the Natural natural-number type, as well as a "natural :: Natural -> SDoc" function that mirrors the existing "integer" function. - - - - - d48ebc23 by Cheng Shao at 2025-09-16T14:59:18-04:00 autoconf: emit warning instead of error for FIND_PYTHON logic This patch makes FIND_PYTHON logic emit warning instead of error, so when the user doesn't expect to run the testsuite driver (especially when installing a bindist), python would not be mandatory. Fixes #26347. - - - - - 54b5950e by Sylvain Henry at 2025-09-17T04:45:18-04:00 Print fully qualified unit names in name mismatch It's more user-friendly to directly print the right thing instead of requiring the user to retry with the additional `-dppr-debug` flag. - - - - - 403cb665 by Ben Gamari at 2025-09-17T04:46:00-04:00 configure: Fix consistency between distrib and source CC check Previously distrib/configure.ac did not include `cc`. Closes #26394. - - - - - 2dcd4cb9 by Oleg Grenrus at 2025-09-17T04:46:41-04:00 Use isPrint in showUnique The comment say ``` -- Avoid emitting non-printable characters in pretty uniques. See #25989. ``` so let the code do exactly that. There are tags (at least : and 0 .. 9) which weren't in A .. z range. - - - - - e5dd754b by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Shorten in-module links in hyperlinked source Instead of href="This.Module#ident" to just "#ident" - - - - - 63189b2c by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Use showUnique in internalAnchorIdent Showing the key of Unique as a number is generally not a great idea. GHC Unique has a tag in high bits, so the raw number is unnecessarily big. So now we have ```html <a href="#l-rvgK">bar</a> ``` instead of ```html <a href="#local-6989586621679015689">bar</a> ``` Together with previous changes of shorter intra-module links the effect on compressed files is not huge, that is expected as we simply remove repetitive contents which pack well. ``` 12_694_206 Agda-2.9.0-docs-orig.tar.gz 12_566_065 Agda-2.9.0-docs.tar.gz ``` However when unpacked, the difference can be significant, e.g. Agda's largest module source got 5% reduction: ``` 14_230_117 Agda.Syntax.Parser.Parser.html 13_422_109 Agda.Syntax.Parser.Parser.html ``` The whole hyperlinked source code directory got similar reduction ``` 121M Agda-2.9.0-docs-orig/src 114M Agda-2.9.0-docs/src ``` For the reference, sources are about 2/3 of the generated haddocks ``` 178M Agda-2.9.0-docs-old 172M Agda-2.9.0-docs ``` so we get around 3.5% size reduction overall. Not bad for a small local changes. - - - - - 6f63f57b by Stefan Schulze Frielinghaus at 2025-09-17T04:47:22-04:00 rts: Fix alignment for gen_workspace #26334 After a0fa4941903272c48b050d24e93eec819eff51bd bootstrap is broken on s390x and errors out with rts/sm/GCThread.h:207:5: error: error: alignment of array elements is greater than element size 207 | gen_workspace gens[]; | ^~~~~~~~~~~~~ The alignment constraint is applied via the attribute to the type gen_workspace and leaves the underlying type struct gen_workspace_ untouched. On Aarch64, x86, and s390x the struct has a size of 128 bytes. On Aarch64 and x86 the alignments of 128 and 64 are divisors of the size, respectively, which is why the type is a viable member type for an array. However, on s390x, the alignment is 256 and therefore is not a divisor of the size and hence cannot be used for arrays. Basically I see two fixes here. Either decrease the alignment requirement on s390x, or by applying the alignment constraint on the struct itself. The former might affect performance as noted in a0fa4941903272c48b050d24e93eec819eff51bd. The latter introduces padding bits whenever necessary in order to ensure that sizeof(gen_workspace[N])==N*sizeof(gen_workspace) holds which is done by this patch. - - - - - fcc29890 by Cheng Shao at 2025-09-17T18:06:35+02:00 compiler/ghci: replace the LoadDLL message with LoadDLLs As a part of #25407, this commit changes the LoadDLL message to LoadDLLs, which takes a list of DLL paths to load and returns the list of remote pointer handles. The wasm dyld is refactored to take advantage of LoadDLLs and harvest background parallelism. On other platforms, LoadDLLs is based on a fallback codepath that does sequential loading. The driver is not actually emitting singular LoadDLLs message with multiple DLLs yet, this is left in subsequent commits. Co-authored-by: Codex <codex(a)openai.com> - - - - - 6148caad by Cheng Shao at 2025-09-17T18:53:26+02:00 driver: separate downsweep/upsweep phase in loadPackages' This commit refactors GHC.Linker.Loader.loadPackages' to be separated into downsweep/upsweep phases: - The downsweep phase performs dependency analysis and generates a list of topologically sorted packages to load - The upsweep phase sequentially loads these packages by calling loadPackage This is a necessary refactoring to make it possible to make loading of DLLs concurrent. - - - - - c598a52e by Cheng Shao at 2025-09-17T18:53:31+02:00 driver: emit single LoadDLLs message to load multiple DLLs This commit refactors the driver so that it emits a single LoadDLLs message to load multiple DLLs in GHC.Linker.Loader.loadPackages'. Closes #25407. ------------------------- Metric Increase: TcPlugin_RewritePerf ------------------------- - - - - - 46 changed files: - compiler/GHC/Driver/Plugins.hs - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Linker/Loader.hs - compiler/GHC/Linker/MacOS.hs - compiler/GHC/Linker/Types.hs - compiler/GHC/Runtime/Heap/Inspect.hs - compiler/GHC/Runtime/Interpreter.hs - compiler/GHC/StgToCmm/Layout.hs - compiler/GHC/Types/Unique.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Outputable.hs - configure.ac - distrib/configure.ac.in - hadrian/src/Rules/Gmp.hs - libraries/ghc-heap/GHC/Exts/Heap.hs - libraries/ghci/GHCi/Message.hs - libraries/ghci/GHCi/ObjLink.hs - libraries/ghci/GHCi/Run.hs - m4/find_python.m4 - rts/sm/GCThread.h - testsuite/tests/codeGen/should_run/T13825-unit.hs - testsuite/tests/rts/linker/T2615.hs - testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout - testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout-ws-32 - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cxx.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs - utils/haddock/hypsrc-test/Main.hs - utils/haddock/hypsrc-test/ref/src/CPP.html - utils/haddock/hypsrc-test/ref/src/Classes.html - utils/haddock/hypsrc-test/ref/src/Constructors.html - utils/haddock/hypsrc-test/ref/src/Identifiers.html - utils/haddock/hypsrc-test/ref/src/LinkingIdentifiers.html - utils/haddock/hypsrc-test/ref/src/Literals.html - utils/haddock/hypsrc-test/ref/src/Operators.html - utils/haddock/hypsrc-test/ref/src/Polymorphism.html - utils/haddock/hypsrc-test/ref/src/PositionPragmas.html - utils/haddock/hypsrc-test/ref/src/Quasiquoter.html - utils/haddock/hypsrc-test/ref/src/Records.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellQuasiquotes.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellSplices.html - utils/haddock/hypsrc-test/ref/src/Types.html - utils/haddock/hypsrc-test/ref/src/UsingQuasiquotes.html - utils/jsffi/dyld.mjs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6b2b530d782afb124ac3a1dee96d29… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6b2b530d782afb124ac3a1dee96d29… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 8 commits: ghci: add :shell command
by Marge Bot (＠marge-bot) 17 Sep '25

17 Sep '25

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: fbd85e4e by Cheng Shao at 2025-09-17T12:11:39-04:00 ghci: add :shell command This patch adds a new :shell command to ghci which works similarly to :!, except it guarantees to run the command via sh -c. On POSIX hosts the behavior is identical to :!, but on Windows it uses the msys2 shell instead of system cmd.exe shell. This is convenient when writing simple ghci scripts that run simple POSIX commands, and the behavior can be expected to be coherent on both Windows and POSIX. Co-authored-by: Codex <codex(a)openai.com> - - - - - ee65bc4a by Cheng Shao at 2025-09-17T12:11:39-04:00 testsuite: remove legacy :shell trick This commit makes use of the built-in :shell functionality in ghci in the test cases, and remove the legacy :shell trick. - - - - - 6fe6cef6 by Cheng Shao at 2025-09-17T12:11:39-04:00 docs: document :shell in ghci This commit documents the :shell command in ghci. Co-authored-by: Codex <codex(a)openai.com> - - - - - 1c2a41b7 by Cheng Shao at 2025-09-17T12:11:43-04:00 ghc-internal: fix codepages program codepages was not properly updated during the base -> ghc-internal migration, this commit fixes it. - - - - - bde707a4 by Cheng Shao at 2025-09-17T12:11:43-04:00 ghc-internal: relax ucd2haskell cabal upper bounds This commit relaxes ucd2haskell cabal upper bounds to make it runnable via ghc 9.12/9.14. - - - - - 2fa01f2b by Cheng Shao at 2025-09-17T12:11:43-04:00 ghc-internal: update to unicode 17.0.0 This commit updates the generated code in ghc-internal to match unicode 17.0.0. - - - - - 3cdb8139 by sheaf at 2025-09-17T12:12:01-04:00 Bad record update msg: allow out-of-scope datacons This commit ensures that, when we encounter an invalid record update (because no constructor exists which contains all of the record fields mentioned in the record update), we graciously handle the situation in which the constructors themselves are not in scope. In that case, instead of looking up the constructors in the GlobalRdrEnv, directly look up their GREInfo using the lookupGREInfo function. Fixes #26391 - - - - - 26c2a2ba by sheaf at 2025-09-17T12:12:01-04:00 Improve Notes about disambiguating record updates This commit updates the notes [Disambiguating record updates] and [Type-directed record disambiguation], in particular adding more information about the deprecation status of type-directed disambiguation of record updates. - - - - - 54 changed files: - compiler/GHC/Rename/Env.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Tc/Gen/Expr.hs - docs/users_guide/9.16.1-notes.rst - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - libraries/base/tests/unicode002.stdout - libraries/base/tests/unicode003.stdout - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/codepages/Makefile - libraries/ghc-internal/src/GHC/Internal/Unicode/Char/DerivedCoreProperties.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Char/UnicodeData/GeneralCategory.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Char/UnicodeData/SimpleLowerCaseMapping.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Char/UnicodeData/SimpleTitleCaseMapping.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Char/UnicodeData/SimpleUpperCaseMapping.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Version.hs - libraries/ghc-internal/tools/ucd2haskell/ucd.sh - libraries/ghc-internal/tools/ucd2haskell/ucd2haskell.cabal - libraries/ghc-internal/tools/ucd2haskell/unicode_version - testsuite/tests/driver/multipleHomeUnits/all.T - testsuite/tests/ghci.debugger/scripts/break022/all.T - testsuite/tests/ghci.debugger/scripts/break022/break022.script - testsuite/tests/ghci.debugger/scripts/break023/all.T - testsuite/tests/ghci.debugger/scripts/break023/break023.script - testsuite/tests/ghci/prog001/prog001.T - testsuite/tests/ghci/prog001/prog001.script - testsuite/tests/ghci/prog002/prog002.T - testsuite/tests/ghci/prog002/prog002.script - testsuite/tests/ghci/prog003/prog003.T - testsuite/tests/ghci/prog003/prog003.script - testsuite/tests/ghci/prog005/prog005.T - testsuite/tests/ghci/prog005/prog005.script - testsuite/tests/ghci/prog010/all.T - testsuite/tests/ghci/prog010/ghci.prog010.script - testsuite/tests/ghci/prog012/all.T - testsuite/tests/ghci/prog012/prog012.script - testsuite/tests/ghci/recompTHghci/all.T - testsuite/tests/ghci/recompTHghci/recompTHghci.script - testsuite/tests/ghci/scripts/T18330.script - testsuite/tests/ghci/scripts/T18330.stdout - testsuite/tests/ghci/scripts/T1914.script - testsuite/tests/ghci/scripts/T20587.script - testsuite/tests/ghci/scripts/T6106.script - testsuite/tests/ghci/scripts/T8353.script - testsuite/tests/ghci/scripts/all.T - testsuite/tests/ghci/scripts/ghci038.script - testsuite/tests/ghci/scripts/ghci058.script - testsuite/tests/ghci/scripts/ghci063.script - − testsuite/tests/ghci/shell.hs - + testsuite/tests/overloadedrecflds/should_fail/T26391.hs - + testsuite/tests/overloadedrecflds/should_fail/T26391.stderr - testsuite/tests/overloadedrecflds/should_fail/all.T - testsuite/tests/perf/compiler/MultiLayerModulesDefsGhci.script - testsuite/tests/perf/compiler/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/48d636374da2e19881a6cf801fde56… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/48d636374da2e19881a6cf801fde56… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26415] Fix tabs in string gaps (#26415)
by Brandon Chinn (＠brandonchinn178) 17 Sep '25

17 Sep '25

Brandon Chinn pushed to branch wip/T26415 at Glasgow Haskell Compiler / GHC Commits: 7f779ee5 by Brandon Chinn at 2025-09-17T08:01:51-07:00 Fix tabs in string gaps (#26415) - - - - - 5 changed files: - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/Lexer/String.x - + testsuite/tests/parser/should_run/T26415.hs - + testsuite/tests/parser/should_run/T26415.stdout - testsuite/tests/parser/should_run/all.T Changes: ===================================== compiler/GHC/Parser/Lexer.x ===================================== @@ -145,7 +145,7 @@ import GHC.Parser.String $unispace = \x05 -- Trick Alex into handling Unicode. See Note [Unicode in Alex]. $nl = [\n\r\f] $space = [\ $unispace] -$whitechar = [$nl \v $space] +$whitechar = [$nl \t \v $space] $white_no_nl = $whitechar # \n -- TODO #8424 $tab = \t @@ -248,7 +248,7 @@ haskell :- -- Alex "Rules" -- everywhere: skip whitespace -$white_no_nl+ ; +($white_no_nl # \t)+ ; $tab { warnTab } -- Everywhere: deal with nested comments. We explicitly rule out ===================================== compiler/GHC/Parser/Lexer/String.x ===================================== @@ -25,7 +25,7 @@ import GHC.Utils.Panic (panic) $unispace = \x05 -- Trick Alex into handling Unicode. See Note [Unicode in Alex]. $nl = [\n\r\f] $space = [\ $unispace] -$whitechar = [$nl \v $space] +$whitechar = [$nl \t \v $space] $tab = \t $ascdigit = 0-9 ===================================== testsuite/tests/parser/should_run/T26415.hs ===================================== @@ -0,0 +1,6 @@ +{-# LANGUAGE MultilineStrings #-} + +main :: IO () +main = do + print "\ \" + print """\ \""" ===================================== testsuite/tests/parser/should_run/T26415.stdout ===================================== @@ -0,0 +1,2 @@ +"" +"" ===================================== testsuite/tests/parser/should_run/all.T ===================================== @@ -27,6 +27,7 @@ test('RecordDotSyntax4', [extra_files(['RecordDotSyntaxA.hs'])], multimod_compil test('RecordDotSyntax5', normal, compile_and_run, ['']) test('ListTuplePunsConstraints', extra_files(['ListTuplePunsConstraints.hs']), ghci_script, ['ListTuplePunsConstraints.script']) test('T25937', normal, compile_and_run, ['']) +test('T26415', normal, compile_and_run, ['']) # Multiline strings test('MultilineStrings', normal, compile_and_run, ['']) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7f779ee56638fb37f8f231742ecbbb2… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7f779ee56638fb37f8f231742ecbbb2… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26330] 57 commits: Report solid equality errors before custom errors
by Simon Peyton Jones (＠simonpj) 17 Sep '25

17 Sep '25

Simon Peyton Jones pushed to branch wip/T26330 at Glasgow Haskell Compiler / GHC Commits: ba210d98 by Simon Peyton Jones at 2025-09-08T16:26:36+01:00 Report solid equality errors before custom errors This MR fixes #26255 by * Reporting solid equality errors like Int ~ Bool before "custom type errors". See comments in `report1` in `reportWanteds` * Suppressing errors that arise from superclasses of Wanteds. See (SCE1) in Note [Suppressing confusing errors] More details in #26255. - - - - - b6249140 by Simon Peyton Jones at 2025-09-10T10:42:38-04:00 Fix a scoping error in Specialise This small patch fixes #26329, which triggered a scoping error. Test is in T21391, with -fpolymorphic-specialisation enabled - - - - - 45305ab8 by sheaf at 2025-09-10T10:43:29-04:00 Make rationalTo{Float,Double} inline in phase 0 We hold off on inlining these until phase 0 to allow constant-folding rules to fire. However, once we get to phase 0, we should inline them, e.g. to expose unboxing opportunities. See CLC proposal #356. - - - - - 0959d4bc by Andreas Klebinger at 2025-09-10T10:44:12-04:00 Add regression test for #26056 - - - - - dc79593d by sheaf at 2025-09-10T10:45:01-04:00 Deep subsumption: unify mults without tcEqMult As seen in #26332, we may well end up with a non-reflexive multiplicity coercion when doing deep subsumption. We should do the same thing that we do without deep subsumption: unify the multiplicities normally, without requiring that the coercion is reflexive (which is what 'tcEqMult' was doing). Fixes #26332 - - - - - 4bfe2269 by sheaf at 2025-09-10T10:45:50-04:00 lint-codes: fixup MSYS drive letter on Windows This change ensures that System.Directory.listDirectory doesn't trip up on an MSYS-style path like '/c/Foo' when trying to list all testsuite stdout/stderr files as required for testing coverage of GHC diagnostic codes in the testsuite. Fixes #25178 - - - - - 56540775 by Ben Gamari at 2025-09-10T10:46:32-04:00 gitlab-ci: Disable split sections on FreeBSD Due to #26303. - - - - - 1537784b by Moritz Angermann at 2025-09-10T10:47:13-04:00 Improve mach-o relocation information This change adds more information about the symbol and addresses we try to relocate in the linker. This significantly helps when deubbging relocation issues reported by users. - - - - - 4e67855b by Moritz Angermann at 2025-09-10T10:47:54-04:00 test.mk expect GhcLeadingUnderscore, not LeadingUnderscore (in line with the other Ghc prefixed variables. - - - - - c1cdd265 by Moritz Angermann at 2025-09-10T10:48:35-04:00 testsuite: Fix broken exec_signals_child.c There is no signal 0. The signal mask is 1-32. - - - - - 99ac335c by Moritz Angermann at 2025-09-10T10:49:15-04:00 testsuite: clarify Windows/Darwin locale rationale for skipping T6037 T2507 T8959a - - - - - 0e8fa77a by Moritz Angermann at 2025-09-10T10:49:56-04:00 Skip broken tests on macOS (due to leading underscore not handled properly in the expected output.) - - - - - 28570c59 by Zubin Duggal at 2025-09-10T10:50:37-04:00 docs(sphinx): fix links to reverse flags when using the :ghc-flag:`-fno-<flag>` syntax This solution is rather hacky and I suspect there is a better way to do this but I don't know enough about Sphinx to do better. Fixes #26352 - - - - - d17257ed by Cheng Shao at 2025-09-10T17:01:27+02:00 rel-eng: update alpine images to 3.22 This patch is a part of #25876 and updates alpine images to 3.22, while still retaining 3.12 for x86_64 fully_static bindists. ------------------------- Metric Decrease: MultiComponentModulesRecomp ------------------------- - - - - - db3276bb by Sylvain Henry at 2025-09-11T11:27:28-04:00 T16180: indicate that the stack isn't executable - - - - - 11eeeba7 by Sylvain Henry at 2025-09-11T11:27:28-04:00 Fix some tests (statically linked GHC vs libc) When GHC is linked statically, the stdout C global variable that GHC uses isn't shared with the stdout C global variable used by loaded code. As a consequence, the latter must be explicitly flushed because GHC won't flush it before exiting. - - - - - 80a07571 by Sylvain Henry at 2025-09-11T11:28:18-04:00 Testsuite: fix debug_rts detection Running the testsuite without Hadrian should set config.debug_rts correctly too. - - - - - 62ae97de by Duncan Coutts at 2025-09-12T13:23:33-04:00 Handle heap allocation failure in I/O primops The current I/O managers do not use allocateMightFail, but future ones will. To support this properly we need to be able to return to the primop with a failure. We simply use a bool return value. Currently however, we will just throw an exception rather than calling the GC because that's what all the other primops do too. For the general issue of primops invoking GC and retrying, see https://gitlab.haskell.org/ghc/ghc/-/issues/24105 - - - - - cb9093f5 by Duncan Coutts at 2025-09-12T13:23:33-04:00 Move (and rename) scheduleStartSignalHandlers into RtsSignals.h Previously it was a local helper (static) function in Schedule.c. Rename it to startPendingSignalHandlers and deifine it as an inline header function in RtsSignals.h. So it should still be fast. Each (new style) I/O manager is going to need to do the same, so eliminating the duplication now makes sense. - - - - - 9736d44a by Duncan Coutts at 2025-09-12T13:23:33-04:00 Reduce detail in printThreadBlockage I/O blocking cases The printThreadBlockage is used in debug tracing output. For the cases BlockedOn{Read,Write,Delay} the output previously included the fd that was being waited on, and the delay target wake time. Superficially this sounds useful, but it's clearly not that useful because it was already wrong for the Win32 non-threaded I/O manager. In that situation it will print garbage (the async_result pointer, cast to a fd or a time). So given that it apparently never mattered that the information was accurate, then it's hardly a big jump to say it doesn't matter if it is present at all. A good reason to remove it is that otherwise we have to make a new API and a per-I/O manager implementation to fetch the information. And for some I/O manager implementations, this information is not available. It is not available in the win32 non-threaded I/O manager. And for some future Linux ones, there is no need for the fd to be stored, so storing it would be just extra space used for very little gain. So the simplest thing is to just remove the detail. - - - - - bc0f2d5d by Duncan Coutts at 2025-09-12T13:23:33-04:00 Add TimeoutQueue.{c,h} and corresponding tests A data structure used to efficiently manage a collection of timeouts. It is a priority queue based on absolute expiry time. It uses 64bit high-precision Time for the keys. The values are normal closures which allows for example using MVars for unblocking. It is common in many applications for timeouts to be created and then deleted or altered before they expire. Thus the choice of data structure for timeouts should support this efficiently. The implementation choice here is a leftist heap with the extra feature that it supports deleting arbitrary elements, provided the caller retain a pointer to the element. While the deleteMin operation takes O(log n) time, as in all heap structures, the delete operation for arbitrary elements /typically/ takes O(1), and only O(log n) in the worst case. In practice, when managing thousands of timeouts it can be a factor of 10 faster to delete a random timeout queue element than to remove the minimum element. This supports the common use case. The plan is to use it in some of the RTS-side I/O managers to support their timer functionality. In this use case the heap value will be an MVar used for each timeout to unblock waiting threads. - - - - - d1679c9d by Duncan Coutts at 2025-09-12T13:23:33-04:00 Add ClosureTable.{c,h} and corresponding tests A table of pointers to closures on the GC heap with stable indexes. It provides O(1) alloc, free and lookup. The table can be expanded using a simple doubling strategy: in which case allocation is typically O(1) and occasionally O(n) for overall amortised O(1). No shrinking is used. The table itself is heap allocated, and points to other heap objects. As such it's necessary to use markClosureTable to ensure the table is used as a GC root to keep the table entries alive, and maintain proper pointers to them as the GC moves heap objects about. It is designed to be allocated and accesses exclusively from a single capability, enabling it to work without any locking. It is thus similar to the StablePtr table, but per-capability which removes the need for locking. It _should_ also provide lower GC pause times with the non-moving GC by spending only O(1) time in markClosureTable, vs O(n) for markStablePtrTable. The plan is to use it in some of the I/O managers to keep track of in-flight I/O operations (but not timers). This allows the tracking info to be kept on the (unpinned) GC heap, and shared with Haskell code, and by putting a pointer to the tracking information in a table, the index remains stable and can be passed via foreign code (like the kernel). - - - - - 78cb8dd5 by Duncan Coutts at 2025-09-12T13:23:33-04:00 Add the StgAsyncIOOp closure type This is intended to be used by multiple I/O managers to help with tracking in-flight I/O operations. It is called asynchronous because from the point of view of the RTS we have many such operations in progress at once. From the point of view of a Haskell thread of course it can look synchronous. - - - - - a2839896 by Duncan Coutts at 2025-09-12T13:23:33-04:00 Add StgAsyncIOOp and StgTimeoutQueue to tso->block_info These will be used by new I/O managers, for threads blocked on I/O or timeouts. - - - - - fdc2451c by Duncan Coutts at 2025-09-12T13:23:33-04:00 Add a new I/O manager based on poll() This is a proof of concept I/O manager, to show how to add new ones neatly, using the ClosureTable and TimeoutQueue infrastructure. It uses the old unix poll() API, so it is of course limited in performance by that, but it should have the benefit of wide compatibility. Also we neatly avoid a name clash with the existing select() I/O manager. Compared to the select() I/O manager: 1. beause it uses poll() it is not limited to 1024 file descriptors (but it's still O(n) so don't expect great performance); 2. it should have much faster threadDelay (when using it in lots of threads at once) because it's based on the new TimeoutQueue which is O(log n) rather than O(n). Some of the code related to timers/timouts is put into a shared module rts/posix/Timeout.{h,c} since it is intended to be shared with other similar I/O managers. - - - - - 6c273b76 by Duncan Coutts at 2025-09-12T13:23:34-04:00 Document the I/O managers in the user guide and note the new poll I/O manager in the release notes. - - - - - 824fab74 by Duncan Coutts at 2025-09-12T13:23:34-04:00 Use the poll() I/O manager by default That is, for the non-threaded RTS, prefer the poll I/O manager over the legacy select() one, if both can be enabled. This patch is primarily for CI testing, so we should probably remove this patch before merging. We can change defaults later after wider testing and feedback. - - - - - 39392532 by Luite Stegeman at 2025-09-12T13:24:16-04:00 Support larger unboxed sums Change known constructor encoding for sums in interfaces to use 11 bits for both the arity and the alternative (up from 8 and 6, respectively) - - - - - 2af12e21 by Luite Stegeman at 2025-09-12T13:24:16-04:00 Decompose padding smallest-first in Cmm toplevel data constructors This makes each individual padding value aligned - - - - - 418fa78f by Luite Stegeman at 2025-09-12T13:24:16-04:00 Use slots smaller than word as tag for smaller unboxed sums This packs unboxed sums more efficiently by allowing Word8, Word16 and Word32 for the tag field if the number of constructors is small enough - - - - - 8d7e912f by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00 ghc-toolchain: Use ByteOrder rather than new Endianness Don't introduce a duplicate datatype when the previous one is equivalent and already used elsewhere. This avoids unnecessary translation between the two. - - - - - 7d378476 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00 Read Toolchain.Target files rather than 'settings' This commit makes GHC read `lib/targets/default.target`, a file with a serialized value of `ghc-toolchain`'s `GHC.Toolchain.Target`. Moreover, it removes all the now-redundant entries from `lib/settings` that are configured as part of a `Target` but were being written into `settings`. This makes it easier to support multiple targets from the same compiler (aka runtime retargetability). `ghc-toolchain` can be re-run many times standalone to produce a `Target` description for different targets, and, in the future, GHC will be able to pick at runtime amongst different `Target` files. This commit only makes it read the default `Target` configured in-tree or configured when installing the bindist. The remaining bits of `settings` need to be moved to `Target` in follow up commits, but ultimately they all should be moved since they are per-target relevant. Fixes #24212 On Windows, the constant overhead of parsing a slightly more complex data structure causes some small-allocation tests to wiggle around 1 to 2 extra MB (1-2% in these cases). ------------------------- Metric Increase: MultiLayerModulesTH_OneShot T10421 T10547 T12234 T12425 T13035 T18140 T18923 T9198 TcPlugin_RewritePerf ------------------------- - - - - - e0780a16 by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00 ghc-toolchain: Move TgtHasLibm to per-Target file TargetHasLibm is now part of the per-target configuration Towards #26227 - - - - - 8235dd8c by Rodrigo Mesquita at 2025-09-12T17:57:24-04:00 ghc-toolchain: Move UseLibdw to per-Target file To support DWARF unwinding, the RTS must be built with the -f+libdw flag and with the -DUSE_LIBDW macro definition. These flags are passed on build by Hadrian when --enable-dwarf-unwinding is specified at configure time. Whether the RTS was built with support for DWARF is a per-target property, and as such, it was moved to the per-target GHC.Toolchain.Target.Target file. Additionally, we keep in the target file the include and library paths for finding libdw, since libdw should be checked at configure time (be it by configure, or ghc-toolchain, that libdw is properly available). Preserving the user-given include paths for libdw facilitates in the future building the RTS on demand for a given target (if we didn't keep that user input, we couldn't) Towards #26227 - - - - - d5ecf2e8 by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00 ghc-toolchain: Make "Support SMP" a query on a Toolchain.Target "Support SMP" is merely a function of target, so we can represent it as such in `ghc-toolchain`. Hadrian queries the Target using this predicate to determine how to build GHC, and GHC queries the Target similarly to report under --info whether it "Support SMP" Towards #26227 - - - - - e07b031a by Rodrigo Mesquita at 2025-09-12T17:57:25-04:00 ghc-toolchain: Make "tgt rts linker only supports shared libs" function on Target Just like with "Support SMP", "target RTS linker only supports shared libraries" is a predicate on a `Target` so we can just compute it when necessary from the given `Target`. Towards #26227 - - - - - 14123ee6 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00 Solve forall-constraints via an implication, again In this earlier commit: commit 953fd8f1dc080f1c56e3a60b4b7157456949be29 Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com> Date: Mon Jul 21 10:06:43 2025 +0100 Solve forall-constraints immediately, or not at all I used a all-or-nothing strategy for quantified constraints (aka forall-constraints). But alas that fell foul of #26315, and #26376. So this MR goes back to solving a quantified constraint by turning it into an implication; UNLESS we are simplifying constraints from a SPECIALISE pragma, in which case the all-or-nothing strategy is great. See: Note [Solving a Wanted forall-constraint] Other stuff in this MR: * TcSMode becomes a record of flags, rather than an enumeration type; much nicer. * Some fancy footwork to avoid error messages worsening again (The above MR made them better; we want to retain that.) See `GHC.Tc.Errors.Ppr.pprQCOriginExtra`. ------------------------- Metric Decrease: T24471 ------------------------- - - - - - e6c192e2 by Simon Peyton Jones at 2025-09-12T17:58:07-04:00 Add a test case for #26396 ...same bug ast #26315 - - - - - 8f3d80ff by Luite Stegeman at 2025-09-13T08:43:09+02:00 Use mkVirtHeapOffsets for reconstructing terms in RTTI This makes mkVirtHeapOffsets the single source of truth for finding field offsets in closures. - - - - - eb389338 by Luite Stegeman at 2025-09-13T08:43:09+02:00 Sort non-pointer fields by size for more efficient packing This sorts non-pointer fields in mkVirtHeapOffsets, always storing the largest field first. The relative order of equally sized fields remains unchanged. This reduces wasted padding/alignment space in closures with differently sized fields. - - - - - 99b233f4 by Alison at 2025-09-13T16:51:04-04:00 ghc-heap: Fix race condition with profiling builds Apply the same fix from Closures.hs (64fd0fac83) to Heap.hs by adding empty imports to make way-dependent dependencies visible to `ghc -M`. Fixes #15197, #26407 - - - - - 77deaa7a by Cheng Shao at 2025-09-14T21:29:45-04:00 hadrian: build in-tree gmp with -fvisibility=hidden When hadrian builds in-tree gmp, it should build the shared objects with -fvisibility=hidden. The gmp symbols are only used by bignum logic in ghc-internal and shouldn't be exported by the ghc-internal shared library. We should always strive to keep shared library symbol table lean, which benefits platforms with slow dynamic linker or even hard limits about how many symbols can be exported (e.g. macos dyld, win32 dll and wasm dyld). - - - - - 42a18960 by Cheng Shao at 2025-09-14T21:30:26-04:00 Revert "wasm: add brotli compression for ghci browser mode" This reverts commit 731217ce68a1093b5f9e26a07d5bd2cdade2b352. Benchmarks show non-negligible overhead when browser runs on the same host, which is the majority of actual use cases. - - - - - e6755b9f by Cheng Shao at 2025-09-14T21:30:26-04:00 wasm: remove etag logic in ghci browser mode web server This commit removes the etag logic in dyld script's ghci browser mode web server. It was meant to support caching logic of wasm shared libraries, but even if the port is manually specified to make caching even relevant, for localhost the extra overhead around etag logic is simply not worth it according to benchmarks. - - - - - ac5859b9 by sheaf at 2025-09-16T14:58:38-04:00 Add 'Outputable Natural' instance This commit adds an Outputable instance for the Natural natural-number type, as well as a "natural :: Natural -> SDoc" function that mirrors the existing "integer" function. - - - - - d48ebc23 by Cheng Shao at 2025-09-16T14:59:18-04:00 autoconf: emit warning instead of error for FIND_PYTHON logic This patch makes FIND_PYTHON logic emit warning instead of error, so when the user doesn't expect to run the testsuite driver (especially when installing a bindist), python would not be mandatory. Fixes #26347. - - - - - 54b5950e by Sylvain Henry at 2025-09-17T04:45:18-04:00 Print fully qualified unit names in name mismatch It's more user-friendly to directly print the right thing instead of requiring the user to retry with the additional `-dppr-debug` flag. - - - - - 403cb665 by Ben Gamari at 2025-09-17T04:46:00-04:00 configure: Fix consistency between distrib and source CC check Previously distrib/configure.ac did not include `cc`. Closes #26394. - - - - - 2dcd4cb9 by Oleg Grenrus at 2025-09-17T04:46:41-04:00 Use isPrint in showUnique The comment say ``` -- Avoid emitting non-printable characters in pretty uniques. See #25989. ``` so let the code do exactly that. There are tags (at least : and 0 .. 9) which weren't in A .. z range. - - - - - e5dd754b by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Shorten in-module links in hyperlinked source Instead of href="This.Module#ident" to just "#ident" - - - - - 63189b2c by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Use showUnique in internalAnchorIdent Showing the key of Unique as a number is generally not a great idea. GHC Unique has a tag in high bits, so the raw number is unnecessarily big. So now we have ```html <a href="#l-rvgK">bar</a> ``` instead of ```html <a href="#local-6989586621679015689">bar</a> ``` Together with previous changes of shorter intra-module links the effect on compressed files is not huge, that is expected as we simply remove repetitive contents which pack well. ``` 12_694_206 Agda-2.9.0-docs-orig.tar.gz 12_566_065 Agda-2.9.0-docs.tar.gz ``` However when unpacked, the difference can be significant, e.g. Agda's largest module source got 5% reduction: ``` 14_230_117 Agda.Syntax.Parser.Parser.html 13_422_109 Agda.Syntax.Parser.Parser.html ``` The whole hyperlinked source code directory got similar reduction ``` 121M Agda-2.9.0-docs-orig/src 114M Agda-2.9.0-docs/src ``` For the reference, sources are about 2/3 of the generated haddocks ``` 178M Agda-2.9.0-docs-old 172M Agda-2.9.0-docs ``` so we get around 3.5% size reduction overall. Not bad for a small local changes. - - - - - 6f63f57b by Stefan Schulze Frielinghaus at 2025-09-17T04:47:22-04:00 rts: Fix alignment for gen_workspace #26334 After a0fa4941903272c48b050d24e93eec819eff51bd bootstrap is broken on s390x and errors out with rts/sm/GCThread.h:207:5: error: error: alignment of array elements is greater than element size 207 | gen_workspace gens[]; | ^~~~~~~~~~~~~ The alignment constraint is applied via the attribute to the type gen_workspace and leaves the underlying type struct gen_workspace_ untouched. On Aarch64, x86, and s390x the struct has a size of 128 bytes. On Aarch64 and x86 the alignments of 128 and 64 are divisors of the size, respectively, which is why the type is a viable member type for an array. However, on s390x, the alignment is 256 and therefore is not a divisor of the size and hence cannot be used for arrays. Basically I see two fixes here. Either decrease the alignment requirement on s390x, or by applying the alignment constraint on the struct itself. The former might affect performance as noted in a0fa4941903272c48b050d24e93eec819eff51bd. The latter introduces padding bits whenever necessary in order to ensure that sizeof(gen_workspace[N])==N*sizeof(gen_workspace) holds which is done by this patch. - - - - - ff0fa955 by Simon Peyton Jones at 2025-09-17T15:58:55+01:00 Improve pretty printer for HsExpr Given a very deeply-nested application, it just kept printing deeper and deeper. This small change makes it cut off. - - - - - 254f106a by Simon Peyton Jones at 2025-09-17T15:58:55+01:00 wibbles - - - - - a851d465 by Simon Peyton Jones at 2025-09-17T15:58:55+01:00 Fix default values - - - - - 14ee0f83 by Simon Peyton Jones at 2025-09-17T15:58:55+01:00 Improve applications a bit - - - - - acaf2a42 by Simon Peyton Jones at 2025-09-17T15:58:55+01:00 Accept error changes - - - - - 237 changed files: - .gitlab-ci.yml - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py - .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - compiler/GHC/Builtin/Uniques.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Core/Opt/Specialise.hs - compiler/GHC/Core/Type.hs - compiler/GHC/Core/Unify.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/HsToCore/Binds.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Runtime/Heap/Inspect.hs - compiler/GHC/Settings.hs - compiler/GHC/Settings/IO.hs - compiler/GHC/Stg/Unarise.hs - compiler/GHC/StgToCmm/DataCon.hs - compiler/GHC/StgToCmm/Layout.hs - compiler/GHC/SysTools/BaseDir.hs - compiler/GHC/Tc/Deriv/Utils.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Solver.hs - compiler/GHC/Tc/Solver/Default.hs - compiler/GHC/Tc/Solver/Dict.hs - compiler/GHC/Tc/Solver/Equality.hs - compiler/GHC/Tc/Solver/InertSet.hs - compiler/GHC/Tc/Solver/Monad.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/Solver/Solve.hs-boot - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/Evidence.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcType.hs - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Zonk/TcType.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Types/Unique.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Outputable.hs - compiler/ghc.cabal.in - configure.ac - distrib/configure.ac.in - docs/users_guide/9.16.1-notes.rst - docs/users_guide/flags.py - docs/users_guide/runtime_control.rst - hadrian/bindist/Makefile - hadrian/bindist/config.mk.in - hadrian/cfg/default.host.target.in - hadrian/cfg/default.target.in - hadrian/cfg/system.config.in - hadrian/src/Base.hs - hadrian/src/Oracles/Flag.hs - hadrian/src/Oracles/Setting.hs - hadrian/src/Oracles/TestSettings.hs - hadrian/src/Rules/Generate.hs - hadrian/src/Rules/Gmp.hs - hadrian/src/Settings/Packages.hs - libraries/base/changelog.md - libraries/base/src/GHC/RTS/Flags.hs - libraries/ghc-boot/GHC/Settings/Utils.hs - libraries/ghc-boot/ghc-boot.cabal.in - libraries/ghc-heap/GHC/Exts/Heap.hs - libraries/ghc-internal/src/GHC/Internal/Float.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs - linters/lint-codes/LintCodes/Coverage.hs - m4/find_python.m4 - m4/fp_find_libdw.m4 - − m4/fp_settings.m4 - m4/fp_setup_windows_toolchain.m4 - m4/ghc_toolchain.m4 - m4/prep_target_file.m4 - + m4/subst_tooldir.m4 - mk/hsc2hs.in - + rts/ClosureTable.c - + rts/ClosureTable.h - rts/IOManager.c - rts/IOManager.h - rts/IOManagerInternals.h - rts/PrimOps.cmm - rts/RtsSignals.h - rts/Schedule.c - rts/StgMiscClosures.cmm - rts/Threads.c - + rts/TimeoutQueue.c - + rts/TimeoutQueue.h - rts/configure.ac - rts/include/rts/Constants.h - rts/include/rts/Flags.h - rts/include/rts/storage/Closures.h - rts/include/rts/storage/TSO.h - rts/include/stg/MiscClosures.h - rts/linker/MachO.c - + rts/posix/Poll.c - + rts/posix/Poll.h - + rts/posix/Timeout.c - + rts/posix/Timeout.h - rts/rts.cabal - rts/sm/GCThread.h - testsuite/ghc-config/ghc-config.hs - testsuite/mk/test.mk - testsuite/tests/arrows/gadt/T17423.stderr - testsuite/tests/backpack/should_fail/bkpfail11.stderr - testsuite/tests/backpack/should_fail/bkpfail43.stderr - testsuite/tests/codeGen/should_compile/T25166.stdout → testsuite/tests/codeGen/should_compile/T25166.stdout-ws-32 - + testsuite/tests/codeGen/should_compile/T25166.stdout-ws-64 - testsuite/tests/codeGen/should_run/T13825-unit.hs - + testsuite/tests/deriving/should_compile/T26396.hs - testsuite/tests/deriving/should_compile/all.T - testsuite/tests/deriving/should_fail/T12768.stderr - testsuite/tests/deriving/should_fail/T1496.stderr - testsuite/tests/deriving/should_fail/T21302.stderr - testsuite/tests/deriving/should_fail/T22696b.stderr - testsuite/tests/deriving/should_fail/T5498.stderr - testsuite/tests/deriving/should_fail/T7148.stderr - testsuite/tests/deriving/should_fail/T7148a.stderr - testsuite/tests/driver/all.T - testsuite/tests/ffi/should_run/T1288_c.c - testsuite/tests/ffi/should_run/T1288_ghci_c.c - testsuite/tests/ffi/should_run/T2276_c.c - testsuite/tests/ffi/should_run/T2276_ghci_c.c - testsuite/tests/ghc-api/T20757.hs - testsuite/tests/ghc-api/settings-escape/T24265.hs - testsuite/tests/ghc-api/settings-escape/T24265.stderr - + testsuite/tests/ghc-api/settings-escape/ghc-install-folder/lib with spaces/targets/.gitkeep - testsuite/tests/ghci/scripts/T7388.hs - 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+ testsuite/tests/typecheck/should_fail/T26255c.hs - + testsuite/tests/typecheck/should_fail/T26255c.stderr - testsuite/tests/typecheck/should_fail/T8603.stderr - testsuite/tests/typecheck/should_fail/UnliftedNewtypesFamilyKindFail2.stderr - testsuite/tests/typecheck/should_fail/all.T - testsuite/tests/typecheck/should_fail/tcfail128.stderr - testsuite/tests/typecheck/should_fail/tcfail153.stderr - testsuite/tests/typecheck/should_fail/tcfail168.stderr - testsuite/tests/typecheck/should_fail/tcfail177.stderr - testsuite/tests/typecheck/should_fail/tcfail185.stderr - testsuite/tests/typecheck/should_run/Typeable1.stderr - + testsuite/tests/unboxedsums/UbxSumUnpackedSize.hs - + testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout - + testsuite/tests/unboxedsums/UbxSumUnpackedSize.stdout-ws-32 - testsuite/tests/unboxedsums/all.T - testsuite/tests/unboxedsums/unboxedsums_unit_tests.hs - utils/ghc-pkg/Main.hs - utils/ghc-pkg/ghc-pkg.cabal.in - utils/ghc-toolchain/exe/Main.hs - utils/ghc-toolchain/ghc-toolchain.cabal - + utils/ghc-toolchain/src/GHC/Toolchain/Library.hs - utils/ghc-toolchain/src/GHC/Toolchain/PlatformDetails.hs - utils/ghc-toolchain/src/GHC/Toolchain/Target.hs - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cpp.hs - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cxx.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs - utils/haddock/hypsrc-test/Main.hs - utils/haddock/hypsrc-test/ref/src/CPP.html - utils/haddock/hypsrc-test/ref/src/Classes.html - utils/haddock/hypsrc-test/ref/src/Constructors.html - utils/haddock/hypsrc-test/ref/src/Identifiers.html - utils/haddock/hypsrc-test/ref/src/LinkingIdentifiers.html - utils/haddock/hypsrc-test/ref/src/Literals.html - utils/haddock/hypsrc-test/ref/src/Operators.html - utils/haddock/hypsrc-test/ref/src/Polymorphism.html - utils/haddock/hypsrc-test/ref/src/PositionPragmas.html - utils/haddock/hypsrc-test/ref/src/Quasiquoter.html - utils/haddock/hypsrc-test/ref/src/Records.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellQuasiquotes.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellSplices.html - utils/haddock/hypsrc-test/ref/src/Types.html - utils/haddock/hypsrc-test/ref/src/UsingQuasiquotes.html - utils/jsffi/dyld.mjs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6e80c6a495d4ad2942e630405135ab… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6e80c6a495d4ad2942e630405135ab… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/no-ws-spans] Don't wrap spaces in s
by Oleg Grenrus (＠phadej) 17 Sep '25

17 Sep '25

Oleg Grenrus pushed to branch wip/no-ws-spans at Glasgow Haskell Compiler / GHC Commits: b901f41a by Oleg Grenrus at 2025-09-17T17:38:49+03:00 Don't wrap spaces in s Doing similar comparison as in 63189b2ceca07edf4e179f4180ca60d470c62cb3 With this change the gzipped documentation is now 2% smaller (previously 1%) 12_694_206 Agda-2.9.0-docs-orig.tar.gz 12_436_829 Agda-2.9.0-docs.tar.gz Unzipped docs are 5% smaller (previously 3%) 178M Agda-2.9.0-docs-orig 169M Agda-2.9.0-docs Individual hyperlinked sources are around 7-10% smaller (previously 5%) (`Parser` module is generated by happy and has relatively little whitespace) 14_230_117 Agda.Syntax.Parser.Parser.html 13_220_758 Agda.Syntax.Parser.Parser.html Agda's hyperlinked sources are 9% smaller now: 121M Agda-2.9.0-docs-orig/src 110M Agda-2.9.0-docs/src - - - - - 17 changed files: - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs - utils/haddock/hypsrc-test/ref/src/Bug1091.html - utils/haddock/hypsrc-test/ref/src/CPP.html - utils/haddock/hypsrc-test/ref/src/Classes.html - utils/haddock/hypsrc-test/ref/src/Constructors.html - utils/haddock/hypsrc-test/ref/src/Identifiers.html - utils/haddock/hypsrc-test/ref/src/LinkingIdentifiers.html - utils/haddock/hypsrc-test/ref/src/Literals.html - utils/haddock/hypsrc-test/ref/src/Operators.html - utils/haddock/hypsrc-test/ref/src/Polymorphism.html - utils/haddock/hypsrc-test/ref/src/PositionPragmas.html - utils/haddock/hypsrc-test/ref/src/Quasiquoter.html - utils/haddock/hypsrc-test/ref/src/Records.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellQuasiquotes.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellSplices.html - utils/haddock/hypsrc-test/ref/src/Types.html - utils/haddock/hypsrc-test/ref/src/UsingQuasiquotes.html The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b901f41ad4d3ac8d249f73d7b3a2ac7… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b901f41ad4d3ac8d249f73d7b3a2ac7… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/sol-fix-typo
by Simon Hengel (＠sol) 17 Sep '25

17 Sep '25

Simon Hengel pushed new branch wip/sol-fix-typo at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/sol-fix-typo You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/no-ws-spans] 9 commits: Add 'Outputable Natural' instance
by Oleg Grenrus (＠phadej) 17 Sep '25

17 Sep '25

Oleg Grenrus pushed to branch wip/no-ws-spans at Glasgow Haskell Compiler / GHC Commits: ac5859b9 by sheaf at 2025-09-16T14:58:38-04:00 Add 'Outputable Natural' instance This commit adds an Outputable instance for the Natural natural-number type, as well as a "natural :: Natural -> SDoc" function that mirrors the existing "integer" function. - - - - - d48ebc23 by Cheng Shao at 2025-09-16T14:59:18-04:00 autoconf: emit warning instead of error for FIND_PYTHON logic This patch makes FIND_PYTHON logic emit warning instead of error, so when the user doesn't expect to run the testsuite driver (especially when installing a bindist), python would not be mandatory. Fixes #26347. - - - - - 54b5950e by Sylvain Henry at 2025-09-17T04:45:18-04:00 Print fully qualified unit names in name mismatch It's more user-friendly to directly print the right thing instead of requiring the user to retry with the additional `-dppr-debug` flag. - - - - - 403cb665 by Ben Gamari at 2025-09-17T04:46:00-04:00 configure: Fix consistency between distrib and source CC check Previously distrib/configure.ac did not include `cc`. Closes #26394. - - - - - 2dcd4cb9 by Oleg Grenrus at 2025-09-17T04:46:41-04:00 Use isPrint in showUnique The comment say ``` -- Avoid emitting non-printable characters in pretty uniques. See #25989. ``` so let the code do exactly that. There are tags (at least : and 0 .. 9) which weren't in A .. z range. - - - - - e5dd754b by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Shorten in-module links in hyperlinked source Instead of href="This.Module#ident" to just "#ident" - - - - - 63189b2c by Oleg Grenrus at 2025-09-17T04:46:42-04:00 Use showUnique in internalAnchorIdent Showing the key of Unique as a number is generally not a great idea. GHC Unique has a tag in high bits, so the raw number is unnecessarily big. So now we have ```html <a href="#l-rvgK">bar</a> ``` instead of ```html <a href="#local-6989586621679015689">bar</a> ``` Together with previous changes of shorter intra-module links the effect on compressed files is not huge, that is expected as we simply remove repetitive contents which pack well. ``` 12_694_206 Agda-2.9.0-docs-orig.tar.gz 12_566_065 Agda-2.9.0-docs.tar.gz ``` However when unpacked, the difference can be significant, e.g. Agda's largest module source got 5% reduction: ``` 14_230_117 Agda.Syntax.Parser.Parser.html 13_422_109 Agda.Syntax.Parser.Parser.html ``` The whole hyperlinked source code directory got similar reduction ``` 121M Agda-2.9.0-docs-orig/src 114M Agda-2.9.0-docs/src ``` For the reference, sources are about 2/3 of the generated haddocks ``` 178M Agda-2.9.0-docs-old 172M Agda-2.9.0-docs ``` so we get around 3.5% size reduction overall. Not bad for a small local changes. - - - - - 6f63f57b by Stefan Schulze Frielinghaus at 2025-09-17T04:47:22-04:00 rts: Fix alignment for gen_workspace #26334 After a0fa4941903272c48b050d24e93eec819eff51bd bootstrap is broken on s390x and errors out with rts/sm/GCThread.h:207:5: error: error: alignment of array elements is greater than element size 207 | gen_workspace gens[]; | ^~~~~~~~~~~~~ The alignment constraint is applied via the attribute to the type gen_workspace and leaves the underlying type struct gen_workspace_ untouched. On Aarch64, x86, and s390x the struct has a size of 128 bytes. On Aarch64 and x86 the alignments of 128 and 64 are divisors of the size, respectively, which is why the type is a viable member type for an array. However, on s390x, the alignment is 256 and therefore is not a divisor of the size and hence cannot be used for arrays. Basically I see two fixes here. Either decrease the alignment requirement on s390x, or by applying the alignment constraint on the struct itself. The former might affect performance as noted in a0fa4941903272c48b050d24e93eec819eff51bd. The latter introduces padding bits whenever necessary in order to ensure that sizeof(gen_workspace[N])==N*sizeof(gen_workspace) holds which is done by this patch. - - - - - c180dd21 by Oleg Grenrus at 2025-09-17T12:51:53+03:00 Don't wrap spaces in s - - - - - 30 changed files: - compiler/GHC/Iface/Errors/Ppr.hs - compiler/GHC/Types/Unique.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Outputable.hs - configure.ac - distrib/configure.ac.in - m4/find_python.m4 - rts/sm/GCThread.h - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs - utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cxx.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Utils.hs - utils/haddock/hypsrc-test/Main.hs - utils/haddock/hypsrc-test/ref/src/Bug1091.html - utils/haddock/hypsrc-test/ref/src/CPP.html - utils/haddock/hypsrc-test/ref/src/Classes.html - utils/haddock/hypsrc-test/ref/src/Constructors.html - utils/haddock/hypsrc-test/ref/src/Identifiers.html - utils/haddock/hypsrc-test/ref/src/LinkingIdentifiers.html - utils/haddock/hypsrc-test/ref/src/Literals.html - utils/haddock/hypsrc-test/ref/src/Operators.html - utils/haddock/hypsrc-test/ref/src/Polymorphism.html - utils/haddock/hypsrc-test/ref/src/PositionPragmas.html - utils/haddock/hypsrc-test/ref/src/Quasiquoter.html - utils/haddock/hypsrc-test/ref/src/Records.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellQuasiquotes.html - utils/haddock/hypsrc-test/ref/src/TemplateHaskellSplices.html - utils/haddock/hypsrc-test/ref/src/Types.html - utils/haddock/hypsrc-test/ref/src/UsingQuasiquotes.html The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/25a48365fa37f8629338e39008c3e3… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/25a48365fa37f8629338e39008c3e3… You're receiving this email because of your account on gitlab.haskell.org.

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