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[Git][ghc/ghc][wip/T20264] Get the types right in Prep
by Simon Peyton Jones (＠simonpj) 05 Mar '26

05 Mar '26

Simon Peyton Jones pushed to branch wip/T20264 at Glasgow Haskell Compiler / GHC Commits: 897e5543 by Simon Peyton Jones at 2026-03-05T08:36:32+00:00 Get the types right in Prep - - - - - 1 changed file: - compiler/GHC/CoreToStg/Prep.hs Changes: ===================================== compiler/GHC/CoreToStg/Prep.hs ===================================== @@ -1569,9 +1569,8 @@ cpeArg :: CorePrepEnv -> Demand -> CoreArg -> UniqSM (Floats, CpeArg) cpeArg env dmd arg = do { (floats1, arg1) <- cpeRhsE env arg -- arg1 can be a lambda - ; let arg_ty = exprType arg - lev = typeLevity arg_ty - dec = wantFloatLocal NonRecursive dmd lev floats1 arg1 + ; let lev = typeLevity (exprType arg1) + dec = wantFloatLocal NonRecursive dmd lev floats1 arg1 ; (floats2, arg2) <- executeFloatDecision env dec floats1 arg1 -- Else case: arg1 might have lambdas, and we can't -- put them inside a wrapBinds @@ -1581,7 +1580,13 @@ cpeArg env dmd arg -- see Note [ANF-ising literal string arguments] ; if exprIsTrivial arg2 then return (floats2, arg2) - else do { v <- (`setIdDemandInfo` dmd) <$> newVar env arg_ty + else do { let arg_ty = exprType arg2 + -- NB: arg_ty might not be same as (exprType arg1) because + -- the latter has the floats wrapped around it + -- E.g. let a = Int in id @a{=Int} 3 + -- exprType arg1 will be `a`, but if we didn't float then + -- exprType arg2 will be `Int` + ; v <- (`setIdDemandInfo` dmd) <$> newVar env arg_ty -- See Note [Pin demand info on floats] ; let arity = cpeArgArity env dec floats1 arg2 arg3 = cpeEtaExpand arity arg2 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/897e554352ee4cbcbd92f4632eb1e10… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/897e554352ee4cbcbd92f4632eb1e10… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/backports-9.12.4] 8 commits: Bump exceptions submodule to 0.10.12.
by Zubin (＠wz1000) 05 Mar '26

05 Mar '26

Zubin pushed to branch wip/backports-9.12.4 at Glasgow Haskell Compiler / GHC Commits: 7630ef4e by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump exceptions submodule to 0.10.12. - - - - - 06f47576 by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump file-io submodule to 0.1.6. - - - - - 8f6f0053 by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump filepath submodule to 1.5.5.0. - - - - - 2129f6f1 by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump haskeline submodule to 0.8.4.1. - - - - - 995cb006 by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump mtl submodule to 2.3.2. - - - - - 4e021a4b by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump os-string submodule to 2.0.10. - - - - - 58d74a0c by Zubin Duggal at 2026-03-05T11:56:26+05:30 Bump unix submodule to 2.8.8.0. - - - - - 6d8735c3 by Zubin Duggal at 2026-03-05T11:56:26+05:30 Prepare release 9.12.4 - - - - - 17 changed files: - configure.ac - + docs/users_guide/9.12.4-notes.rst - docs/users_guide/release-notes.rst - libraries/base/base.cabal.in - libraries/base/changelog.md - libraries/exceptions - libraries/file-io - libraries/filepath - libraries/haskeline - libraries/mtl - libraries/os-string - libraries/unix - testsuite/tests/ghc-e/should_fail/T9930fail.stderr - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 Changes: ===================================== configure.ac ===================================== @@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12.3], [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/9.12.4-notes.rst ===================================== @@ -0,0 +1,166 @@ +.. _release-9-12-4: + +Version 9.12.4 +============== + +The significant changes to the various parts of the compiler are listed in the +following sections. See the `migration guide +<https://gitlab.haskell.org/ghc/ghc/-/wikis/migration/9.12>`_ on the GHC Wiki +for specific guidance on migrating programs to this release. + +Compiler +~~~~~~~~ + +- Fixed a bug in CSE where the in-scope set was not properly maintained (:ghc-ticket:`25468`) +- Fixed ``matchExpectedFunTys`` to use ``tcMkScaledFunTys`` (:ghc-ticket:`26277`) +- Fixed ``parenBreakableList`` usage in ``ppHsContext`` for better pretty-printing of contexts +- Improved error messages for bad record updates to allow out-of-scope data constructors (:ghc-ticket:`26391`) +- Fixed a missing InVar->OutVar lookup in ``SetLevels`` (:ghc-ticket:`26681`) +- Fixed split sections on Windows (:ghc-ticket:`26696`, :ghc-ticket:`26494`) +- Fixed split sections for the LLVM backend (:ghc-ticket:`26770`) +- Don't re-use stack slots for growing registers (:ghc-ticket:`26668`) +- Fixed cast worker/wrapper incorrectly firing on INLINE functions (:ghc-ticket:`26903`) +- Fixed non-determinism in ``TyLitMap`` by using deterministic maps for strings (:ghc-ticket:`26846`) +- Fixed non-determinism in ``WithHsDocIdentifiers`` binary instance by using a stable sort (:ghc-ticket:`26858`) +- Added ``-mcmodel=medium`` module flag to generated LLVM IR on LoongArch +- Pass the ``mcmodel=medium`` parameter to CC via GHC on LoongArch +- Pass the ``+evex512`` attribute to LLVM 18+ when ``-mavx512f`` is set (:ghc-ticket:`26410`) +- Improved error handling in ``getPackageArchives`` (:ghc-ticket:`26383`) +- Fixed a shadowing bug in implicit parameters (:ghc-ticket:`26451`) +- Fixed a subtle bug in ``GHC.Core.Utils.mkTick`` that could generate type-incorrect code (:ghc-ticket:`26772`) +- Fixed a long-standing interaction between ticks and casts in ``Eliminate Identity Cases`` +- ``NamedDefaults``: require the class to be standard or have an in-scope default declaration (:ghc-ticket:`25775`, :ghc-ticket:`25778`) + +Runtime System +~~~~~~~~~~~~~~ + +- Fixed a deadlock with eventlog flush interval and RTS shutdown (:ghc-ticket:`26573`) +- Fixed eager black holes: record mutated closure and fix assertion (:ghc-ticket:`26495`) +- Fixed object file format detection in ``loadArchive`` (:ghc-ticket:`26630`) +- Use ``INFO_TABLE_CONSTR`` for ``stg_dummy_ret_closure`` (:ghc-ticket:`26745`) +- Fixed lost wakeups in ``threadPaused`` for threads blocked on black holes (:ghc-ticket:`26324`) +- Fixed ``stg_AP_STACK`` to push the correct update frame (:ghc-ticket:`26324`) +- Fixed potential loop in heap reservation logic on certain kernels (:ghc-ticket:`26151`) +- Don't use CAS without ``PARALLEL_GC`` on +- Switch prim to use modern atomic compiler builtins (:ghc-ticket:`26729`) +- Removed obsolete ``CC_SUPPORTS_TLS``, ``HAS_VISIBILITY_HIDDEN``, ``COMPILING_WINDOWS_DLL``, + and ``__GNUC__``-related logic +- Removed the ``-O3`` pragma hack in ``Hash.c`` +- Removed unnecessary Cabal flags + +Code Generation +~~~~~~~~~~~~~~~ + +- NCG for PPC: add pattern for ``CmmRegOff`` to ``iselExpr64`` (:ghc-ticket:`26828`) +- PPC NCG: Use libcall for 64-bit ``cmpxchg`` on 32-bit PowerPC (:ghc-ticket:`23969`) + +Bytecode Compiler +~~~~~~~~~~~~~~~~~ + +- Use 32 bits for breakpoint index (:ghc-ticket:`26325`) + +``base`` library +~~~~~~~~~~~~~~~~ + +- Expose ``Backtraces`` constructor and fields (:ghc-ticket:`26049`) +- Store ``StackTrace`` and ``StackSnapshot`` in ``Backtraces``, deferring decoding until display +- Evaluate backtraces for ``error`` exceptions at the moment they are thrown + (`CLC proposal #383 <https://github.com/haskell/core-libraries-committee/issues/383>`__, + :ghc-ticket:`26751`) + +``ghc-experimental`` library +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +- Fixed ``GHC.Exception.Backtrace.Experimental`` module +- Added ability to customise the collection of exception annotations + +``ghc-pkg`` +~~~~~~~~~~~~ + +- Removed ``traceId`` from ``ghc-pkg`` executable + +``ghc-toolchain`` +~~~~~~~~~~~~~~~~~ + +- Dropped ``ld.gold`` from merge object command + +Packaging and Build System +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +- Added ``hpc`` to release script +- Use a response file to invoke GHC when analysing dependencies +- Fixed ``GHC.Platform.Host`` generation for cross stage1 (:ghc-ticket:`26449`) +- Fixed runtime error during ``users_guide`` build with Sphinx 9.1.0 (:ghc-ticket:`26810`) +- Added ``ghc-{experimental,internal}.cabal`` to the list of dependencies of the doc target (:ghc-ticket:`26738`) +- Updated ``libffi`` to 3.5.2 +- Bumped ``directory`` submodule to 1.3.10.1 +- Bumped ``exceptions`` submodule to 0.10.12 +- Bumped ``file-io`` submodule to 0.1.6 +- Bumped ``filepath`` submodule to 1.5.5.0 +- Bumped ``haskeline`` submodule to 0.8.4.1 +- Bumped ``mtl`` submodule to 2.3.2 +- Bumped ``os-string`` submodule to 2.0.10 +- Bumped ``text`` submodule to 2.1.4 +- Bumped ``transformers`` submodule to 0.6.3.0 +- Bumped ``unix`` submodule to 2.8.8.0 +- Bumped ``Win32`` submodule to 2.14.2.1 + +Wasm Backend +~~~~~~~~~~~~ + +- Fixed dyld handling for forward declared ``GOT.func`` items (:ghc-ticket:`26430`) +- Ensure ``setKeepCAFs()`` is called in GHCi (:ghc-ticket:`26106`) +- Prevent bundlers from resolving ``import("node:timers")`` +- Use ``import.meta.main`` for proper distinction of Node.js main modules (:ghc-ticket:`26916`) + +Included libraries +~~~~~~~~~~~~~~~~~~ + +The package database provided with this distribution also contains a number of +packages other than GHC itself. See the changelogs provided with these packages +for further change information. + +.. ghc-package-list:: + + compiler/ghc.cabal: The compiler itself + libraries/array/array.cabal: Dependency of ``ghc`` library + libraries/base/base.cabal: Core library + libraries/binary/binary.cabal: Dependency of ``ghc`` library + libraries/bytestring/bytestring.cabal: Dependency of ``ghc`` library + libraries/Cabal/Cabal/Cabal.cabal: Dependency of ``ghc-pkg`` utility + libraries/Cabal/Cabal-syntax/Cabal-syntax.cabal: Dependency of ``ghc-pkg`` utility + libraries/containers/containers/containers.cabal: Dependency of ``ghc`` library + libraries/deepseq/deepseq.cabal: Dependency of ``ghc`` library + libraries/directory/directory.cabal: Dependency of ``ghc`` library + libraries/exceptions/exceptions.cabal: Dependency of ``ghc`` and ``haskeline`` library + libraries/file-io/file-io.cabal: Dependency of ``directory`` library + libraries/filepath/filepath.cabal: Dependency of ``ghc`` library + libraries/ghc-boot/ghc-boot.cabal: Internal compiler library + libraries/ghc-boot-th/ghc-boot-th.cabal: Internal compiler library + libraries/ghc-compact/ghc-compact.cabal: Core library + libraries/ghc-experimental/ghc-experimental.cabal: Core library + libraries/ghc-heap/ghc-heap.cabal: GHC heap-walking library + libraries/ghci/ghci.cabal: The REPL interface + libraries/ghc-internal/ghc-internal.cabal: Core library + libraries/ghc-platform/ghc-platform.cabal: Internal library + libraries/ghc-prim/ghc-prim.cabal: Core library + libraries/haskeline/haskeline.cabal: Dependency of ``ghci`` executable + libraries/hpc/hpc.cabal: Dependency of ``hpc`` executable + libraries/integer-gmp/integer-gmp.cabal: Core library + libraries/mtl/mtl.cabal: Dependency of ``Cabal`` library + libraries/os-string/os-string.cabal: Dependency of ``filepath`` library + libraries/parsec/parsec.cabal: Dependency of ``Cabal`` library + libraries/pretty/pretty.cabal: Dependency of ``ghc`` library + libraries/process/process.cabal: Dependency of ``ghc`` library + libraries/semaphore-compat/semaphore-compat.cabal: Dependency of ``ghc`` library + libraries/stm/stm.cabal: Dependency of ``haskeline`` library + libraries/template-haskell/template-haskell.cabal: Core library + libraries/terminfo/terminfo.cabal: Dependency of ``haskeline`` library + libraries/text/text.cabal: Dependency of ``Cabal`` library + libraries/time/time.cabal: Dependency of ``ghc`` library + libraries/transformers/transformers.cabal: Dependency of ``ghc`` library + libraries/unix/unix.cabal: Dependency of ``ghc`` library + libraries/Win32/Win32.cabal: Dependency of ``ghc`` library + libraries/xhtml/xhtml.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-api/haddock-api.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-library/haddock-library.cabal: Dependency of ``haddock`` executable ===================================== docs/users_guide/release-notes.rst ===================================== @@ -7,3 +7,4 @@ Release notes 9.12.1-notes 9.12.2-notes 9.12.3-notes + 9.12.4-notes ===================================== 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: 4.21.1.0 +version: 4.21.2.0 -- NOTE: Don't forget to update ./changelog.md license: BSD-3-Clause ===================================== libraries/base/changelog.md ===================================== @@ -1,7 +1,9 @@ # Changelog for [`base` package](http://hackage.haskell.org/package/base) -## 4.21.2.0 *TBA* - * Evaluate backtraces for "error" exceptions at the moment they are thrown. ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383)) +## 4.21.2.0 *March 2026* + * Expose `Backtraces` constructor and fields ([CLC proposal #199](https://github.com/haskell/core-libraries-committee/issues/199), [#26049](https://gitlab.haskell.org/ghc/ghc/-/issues/26049)) + * Store `StackTrace` and `StackSnapshot` in `Backtraces`, deferring decoding until display + * Evaluate backtraces for "error" exceptions at the moment they are thrown ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383), [#26751](https://gitlab.haskell.org/ghc/ghc/-/issues/26751)) ## 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)). ===================================== libraries/exceptions ===================================== @@ -1 +1 @@ -Subproject commit b3a88ccc70acd7aa83be64235ab8c3ef1f08e96b +Subproject commit a3da039855479e3c8542e8b45986599d0414ff68 ===================================== libraries/file-io ===================================== @@ -1 +1 @@ -Subproject commit 21303160b5dd91d6197bd1d20a8796ba2a819d4e +Subproject commit 516e57977dfc031de5e00e8fc0bf5ab4cc6802f5 ===================================== libraries/filepath ===================================== @@ -1 +1 @@ -Subproject commit 65b0f8f31aac4a306135e27734988327f8eb1e6f +Subproject commit baac7d7e76449f76fc6785e77206edb5530b6bfb ===================================== libraries/haskeline ===================================== @@ -1 +1 @@ -Subproject commit 5f4bf62bf1f4846ad0b8d1fa9d45f902e3934511 +Subproject commit d0d8902f88fde549f76771feeb40f16941a22a9f ===================================== libraries/mtl ===================================== @@ -1 +1 @@ -Subproject commit 37cbd924cb71eba591a2e2b6b131767f632d22c9 +Subproject commit 4b5080f43cbc372a437d5fecb144c7b75aadd86b ===================================== libraries/os-string ===================================== @@ -1 +1 @@ -Subproject commit c08666bf7bf528e607fc1eacc20032ec59e69df3 +Subproject commit 71f66e1af2288867becaa567dfb10c1d791b0343 ===================================== libraries/unix ===================================== @@ -1 +1 @@ -Subproject commit 90e7d70de337ad759102b2445ebef6980684a9d3 +Subproject commit 60f432b76871bd7787df07dd3e2a567caba393f5 ===================================== testsuite/tests/ghc-e/should_fail/T9930fail.stderr ===================================== @@ -7,5 +7,7 @@ While handling default output name would overwrite the input file; must specify | Usage: For basic information, try the `--help' option. HasCallStack backtrace: - bracket, called at compiler/GHC/Driver/Make.hs:2955:3 in ghc-9.13-inplace:GHC.Driver.Make + throwIO, called at libraries/exceptions/src/Control/Monad/Catch.hs:371:13 in exceptions-0.10.12-inplace:Control.Monad.Catch + throwM, called at libraries/exceptions/src/Control/Monad/Catch.hs:860:36 in exceptions-0.10.12-inplace:Control.Monad.Catch + onException, called at compiler/GHC/Driver/Make.hs:2955:3 in ghc-9.13-inplace:GHC.Driver.Make ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -4324,13 +4324,13 @@ module GHC.Exception.Backtrace.Experimental where data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} type CollectExceptionAnnotationMechanism :: * data CollectExceptionAnnotationMechanism = ... - collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Internal.Types.IO Backtraces - collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation + collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces + collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation displayBacktraces :: Backtraces -> GHC.Internal.Base.String - getBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.IO GHC.Internal.Types.Bool - getCollectExceptionAnnotationMechanism :: GHC.Internal.Types.IO CollectExceptionAnnotationMechanism - setBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.Bool -> GHC.Internal.Types.IO () - setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO a) -> GHC.Internal.Types.IO () + getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool + getCollectExceptionAnnotationMechanism :: GHC.Types.IO CollectExceptionAnnotationMechanism + setBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.Bool -> GHC.Types.IO () + setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO a) -> GHC.Types.IO () module GHC.PrimOps where -- Safety: Unsafe View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3ff8c5c12cad03c0c1ed02cc9159b1… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/3ff8c5c12cad03c0c1ed02cc9159b1… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/backports-9.12.4] Prepare release 9.12.4
by Zubin (＠wz1000) 05 Mar '26

05 Mar '26

Zubin pushed to branch wip/backports-9.12.4 at Glasgow Haskell Compiler / GHC Commits: 3ff8c5c1 by Zubin Duggal at 2026-03-05T11:09:31+05:30 Prepare release 9.12.4 - - - - - 9 changed files: - configure.ac - + docs/users_guide/9.12.4-notes.rst - docs/users_guide/release-notes.rst - libraries/base/base.cabal.in - libraries/base/changelog.md - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 Changes: ===================================== configure.ac ===================================== @@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12.3], [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/9.12.4-notes.rst ===================================== @@ -0,0 +1,166 @@ +.. _release-9-12-4: + +Version 9.12.4 +============== + +The significant changes to the various parts of the compiler are listed in the +following sections. See the `migration guide +<https://gitlab.haskell.org/ghc/ghc/-/wikis/migration/9.12>`_ on the GHC Wiki +for specific guidance on migrating programs to this release. + +Compiler +~~~~~~~~ + +- Fixed a bug in CSE where the in-scope set was not properly maintained (:ghc-ticket:`25468`) +- Fixed ``matchExpectedFunTys`` to use ``tcMkScaledFunTys`` (:ghc-ticket:`26277`) +- Fixed ``parenBreakableList`` usage in ``ppHsContext`` for better pretty-printing of contexts +- Improved error messages for bad record updates to allow out-of-scope data constructors (:ghc-ticket:`26391`) +- Fixed a missing InVar->OutVar lookup in ``SetLevels`` (:ghc-ticket:`26681`) +- Fixed split sections on Windows (:ghc-ticket:`26696`, :ghc-ticket:`26494`) +- Fixed split sections for the LLVM backend (:ghc-ticket:`26770`) +- Don't re-use stack slots for growing registers (:ghc-ticket:`26668`) +- Fixed cast worker/wrapper incorrectly firing on INLINE functions (:ghc-ticket:`26903`) +- Fixed non-determinism in ``TyLitMap`` by using deterministic maps for strings (:ghc-ticket:`26846`) +- Fixed non-determinism in ``WithHsDocIdentifiers`` binary instance by using a stable sort (:ghc-ticket:`26858`) +- Added ``-mcmodel=medium`` module flag to generated LLVM IR on LoongArch +- Pass the ``mcmodel=medium`` parameter to CC via GHC on LoongArch +- Pass the ``+evex512`` attribute to LLVM 18+ when ``-mavx512f`` is set (:ghc-ticket:`26410`) +- Improved error handling in ``getPackageArchives`` (:ghc-ticket:`26383`) +- Fixed a shadowing bug in implicit parameters (:ghc-ticket:`26451`) +- Fixed a subtle bug in ``GHC.Core.Utils.mkTick`` that could generate type-incorrect code (:ghc-ticket:`26772`) +- Fixed a long-standing interaction between ticks and casts in ``Eliminate Identity Cases`` +- ``NamedDefaults``: require the class to be standard or have an in-scope default declaration (:ghc-ticket:`25775`, :ghc-ticket:`25778`) + +Runtime System +~~~~~~~~~~~~~~ + +- Fixed a deadlock with eventlog flush interval and RTS shutdown (:ghc-ticket:`26573`) +- Fixed eager black holes: record mutated closure and fix assertion (:ghc-ticket:`26495`) +- Fixed object file format detection in ``loadArchive`` (:ghc-ticket:`26630`) +- Use ``INFO_TABLE_CONSTR`` for ``stg_dummy_ret_closure`` (:ghc-ticket:`26745`) +- Fixed lost wakeups in ``threadPaused`` for threads blocked on black holes (:ghc-ticket:`26324`) +- Fixed ``stg_AP_STACK`` to push the correct update frame (:ghc-ticket:`26324`) +- Fixed potential loop in heap reservation logic on certain kernels (:ghc-ticket:`26151`) +- Don't use CAS without ``PARALLEL_GC`` on +- Switch prim to use modern atomic compiler builtins (:ghc-ticket:`26729`) +- Removed obsolete ``CC_SUPPORTS_TLS``, ``HAS_VISIBILITY_HIDDEN``, ``COMPILING_WINDOWS_DLL``, + and ``__GNUC__``-related logic +- Removed the ``-O3`` pragma hack in ``Hash.c`` +- Removed unnecessary Cabal flags + +Code Generation +~~~~~~~~~~~~~~~ + +- NCG for PPC: add pattern for ``CmmRegOff`` to ``iselExpr64`` (:ghc-ticket:`26828`) +- PPC NCG: Use libcall for 64-bit ``cmpxchg`` on 32-bit PowerPC (:ghc-ticket:`23969`) + +Bytecode Compiler +~~~~~~~~~~~~~~~~~ + +- Use 32 bits for breakpoint index (:ghc-ticket:`26325`) + +``base`` library +~~~~~~~~~~~~~~~~ + +- Expose ``Backtraces`` constructor and fields (:ghc-ticket:`26049`) +- Store ``StackTrace`` and ``StackSnapshot`` in ``Backtraces``, deferring decoding until display +- Evaluate backtraces for ``error`` exceptions at the moment they are thrown + (`CLC proposal #383 <https://github.com/haskell/core-libraries-committee/issues/383>`__, + :ghc-ticket:`26751`) + +``ghc-experimental`` library +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +- Fixed ``GHC.Exception.Backtrace.Experimental`` module +- Added ability to customise the collection of exception annotations + +``ghc-pkg`` +~~~~~~~~~~~~ + +- Removed ``traceId`` from ``ghc-pkg`` executable + +``ghc-toolchain`` +~~~~~~~~~~~~~~~~~ + +- Dropped ``ld.gold`` from merge object command + +Packaging and Build System +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +- Added ``hpc`` to release script +- Use a response file to invoke GHC when analysing dependencies +- Fixed ``GHC.Platform.Host`` generation for cross stage1 (:ghc-ticket:`26449`) +- Fixed runtime error during ``users_guide`` build with Sphinx 9.1.0 (:ghc-ticket:`26810`) +- Added ``ghc-{experimental,internal}.cabal`` to the list of dependencies of the doc target (:ghc-ticket:`26738`) +- Updated ``libffi`` to 3.5.2 +- Bumped ``directory`` submodule to 1.3.10.1 +- Bumped ``exceptions`` submodule to 0.10.12 +- Bumped ``file-io`` submodule to 0.1.6 +- Bumped ``filepath`` submodule to 1.5.5.0 +- Bumped ``haskeline`` submodule to 0.8.4.1 +- Bumped ``mtl`` submodule to 2.3.2 +- Bumped ``os-string`` submodule to 2.0.10 +- Bumped ``text`` submodule to 2.1.4 +- Bumped ``transformers`` submodule to 0.6.3.0 +- Bumped ``unix`` submodule to 2.8.8.0 +- Bumped ``Win32`` submodule to 2.14.2.1 + +Wasm Backend +~~~~~~~~~~~~ + +- Fixed dyld handling for forward declared ``GOT.func`` items (:ghc-ticket:`26430`) +- Ensure ``setKeepCAFs()`` is called in GHCi (:ghc-ticket:`26106`) +- Prevent bundlers from resolving ``import("node:timers")`` +- Use ``import.meta.main`` for proper distinction of Node.js main modules (:ghc-ticket:`26916`) + +Included libraries +~~~~~~~~~~~~~~~~~~ + +The package database provided with this distribution also contains a number of +packages other than GHC itself. See the changelogs provided with these packages +for further change information. + +.. ghc-package-list:: + + compiler/ghc.cabal: The compiler itself + libraries/array/array.cabal: Dependency of ``ghc`` library + libraries/base/base.cabal: Core library + libraries/binary/binary.cabal: Dependency of ``ghc`` library + libraries/bytestring/bytestring.cabal: Dependency of ``ghc`` library + libraries/Cabal/Cabal/Cabal.cabal: Dependency of ``ghc-pkg`` utility + libraries/Cabal/Cabal-syntax/Cabal-syntax.cabal: Dependency of ``ghc-pkg`` utility + libraries/containers/containers/containers.cabal: Dependency of ``ghc`` library + libraries/deepseq/deepseq.cabal: Dependency of ``ghc`` library + libraries/directory/directory.cabal: Dependency of ``ghc`` library + libraries/exceptions/exceptions.cabal: Dependency of ``ghc`` and ``haskeline`` library + libraries/file-io/file-io.cabal: Dependency of ``directory`` library + libraries/filepath/filepath.cabal: Dependency of ``ghc`` library + libraries/ghc-boot/ghc-boot.cabal: Internal compiler library + libraries/ghc-boot-th/ghc-boot-th.cabal: Internal compiler library + libraries/ghc-compact/ghc-compact.cabal: Core library + libraries/ghc-experimental/ghc-experimental.cabal: Core library + libraries/ghc-heap/ghc-heap.cabal: GHC heap-walking library + libraries/ghci/ghci.cabal: The REPL interface + libraries/ghc-internal/ghc-internal.cabal: Core library + libraries/ghc-platform/ghc-platform.cabal: Internal library + libraries/ghc-prim/ghc-prim.cabal: Core library + libraries/haskeline/haskeline.cabal: Dependency of ``ghci`` executable + libraries/hpc/hpc.cabal: Dependency of ``hpc`` executable + libraries/integer-gmp/integer-gmp.cabal: Core library + libraries/mtl/mtl.cabal: Dependency of ``Cabal`` library + libraries/os-string/os-string.cabal: Dependency of ``filepath`` library + libraries/parsec/parsec.cabal: Dependency of ``Cabal`` library + libraries/pretty/pretty.cabal: Dependency of ``ghc`` library + libraries/process/process.cabal: Dependency of ``ghc`` library + libraries/semaphore-compat/semaphore-compat.cabal: Dependency of ``ghc`` library + libraries/stm/stm.cabal: Dependency of ``haskeline`` library + libraries/template-haskell/template-haskell.cabal: Core library + libraries/terminfo/terminfo.cabal: Dependency of ``haskeline`` library + libraries/text/text.cabal: Dependency of ``Cabal`` library + libraries/time/time.cabal: Dependency of ``ghc`` library + libraries/transformers/transformers.cabal: Dependency of ``ghc`` library + libraries/unix/unix.cabal: Dependency of ``ghc`` library + libraries/Win32/Win32.cabal: Dependency of ``ghc`` library + libraries/xhtml/xhtml.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-api/haddock-api.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-library/haddock-library.cabal: Dependency of ``haddock`` executable ===================================== docs/users_guide/release-notes.rst ===================================== @@ -7,3 +7,4 @@ Release notes 9.12.1-notes 9.12.2-notes 9.12.3-notes + 9.12.4-notes ===================================== 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: 4.21.1.0 +version: 4.21.2.0 -- NOTE: Don't forget to update ./changelog.md license: BSD-3-Clause ===================================== libraries/base/changelog.md ===================================== @@ -1,7 +1,9 @@ # Changelog for [`base` package](http://hackage.haskell.org/package/base) -## 4.21.2.0 *TBA* - * Evaluate backtraces for "error" exceptions at the moment they are thrown. ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383)) +## 4.21.2.0 *March 2026* + * Expose `Backtraces` constructor and fields ([CLC proposal #199](https://github.com/haskell/core-libraries-committee/issues/199), [#26049](https://gitlab.haskell.org/ghc/ghc/-/issues/26049)) + * Store `StackTrace` and `StackSnapshot` in `Backtraces`, deferring decoding until display + * Evaluate backtraces for "error" exceptions at the moment they are thrown ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383), [#26751](https://gitlab.haskell.org/ghc/ghc/-/issues/26751)) ## 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)). ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -4324,13 +4324,13 @@ module GHC.Exception.Backtrace.Experimental where data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} type CollectExceptionAnnotationMechanism :: * data CollectExceptionAnnotationMechanism = ... - collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Internal.Types.IO Backtraces - collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation + collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces + collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation displayBacktraces :: Backtraces -> GHC.Internal.Base.String - getBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.IO GHC.Internal.Types.Bool - getCollectExceptionAnnotationMechanism :: GHC.Internal.Types.IO CollectExceptionAnnotationMechanism - setBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.Bool -> GHC.Internal.Types.IO () - setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO a) -> GHC.Internal.Types.IO () + getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool + getCollectExceptionAnnotationMechanism :: GHC.Types.IO CollectExceptionAnnotationMechanism + setBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.Bool -> GHC.Types.IO () + setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO a) -> GHC.Types.IO () module GHC.PrimOps where -- Safety: Unsafe View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3ff8c5c12cad03c0c1ed02cc9159b16… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/3ff8c5c12cad03c0c1ed02cc9159b16… You're receiving this email because of your account on gitlab.haskell.org.

1 0

[Git][ghc/ghc][wip/backports-9.12.4] 10 commits: Bump Win32 submodule to 2.14.2.1.
by Zubin (＠wz1000) 05 Mar '26

05 Mar '26

Zubin pushed to branch wip/backports-9.12.4 at Glasgow Haskell Compiler / GHC Commits: 2ee8a948 by Zubin Duggal at 2026-03-05T10:59:34+05:30 Bump Win32 submodule to 2.14.2.1. - - - - - 928c81aa by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump directory submodule to 1.3.10.1. - - - - - 6377207a by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump exceptions submodule to 0.10.12. - - - - - 6b32321d by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump file-io submodule to 0.1.6. - - - - - 287e618e by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump filepath submodule to 1.5.5.0. - - - - - fb5464e6 by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump haskeline submodule to 0.8.4.1. - - - - - 8800f521 by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump mtl submodule to 2.3.2. - - - - - 83f5b0de by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump os-string submodule to 2.0.10. - - - - - e47e83a0 by Zubin Duggal at 2026-03-05T10:59:35+05:30 Bump unix submodule to 2.8.8.0. - - - - - 3825a5ed by Zubin Duggal at 2026-03-05T10:59:35+05:30 Prepare release 9.12.4 - - - - - 18 changed files: - configure.ac - + docs/users_guide/9.12.4-notes.rst - docs/users_guide/release-notes.rst - libraries/Win32 - libraries/base/base.cabal.in - libraries/base/changelog.md - libraries/directory - libraries/exceptions - libraries/file-io - libraries/filepath - libraries/haskeline - libraries/mtl - libraries/os-string - libraries/unix - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 Changes: ===================================== configure.ac ===================================== @@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12.3], [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/9.12.4-notes.rst ===================================== @@ -0,0 +1,154 @@ +.. _release-9-12-4: + +Version 9.12.4 +============== + +The significant changes to the various parts of the compiler are listed in the +following sections. See the `migration guide +<https://gitlab.haskell.org/ghc/ghc/-/wikis/migration/9.12>`_ on the GHC Wiki +for specific guidance on migrating programs to this release. + +Compiler +~~~~~~~~ + +- Fixed a bug in CSE where the in-scope set was not properly maintained (:ghc-ticket:`25468`) +- Fixed ``matchExpectedFunTys`` to use ``tcMkScaledFunTys`` (:ghc-ticket:`26277`) +- Fixed ``parenBreakableList`` usage in ``ppHsContext`` for better pretty-printing of contexts +- Improved error messages for bad record updates to allow out-of-scope data constructors (:ghc-ticket:`26391`) +- Fixed a missing InVar->OutVar lookup in ``SetLevels`` (:ghc-ticket:`26681`) +- Fixed split sections on Windows (:ghc-ticket:`26696`, :ghc-ticket:`26494`) +- Fixed split sections for the LLVM backend (:ghc-ticket:`26770`) +- Don't re-use stack slots for growing registers (:ghc-ticket:`26668`) +- Fixed cast worker/wrapper incorrectly firing on INLINE functions (:ghc-ticket:`26903`) +- Fixed non-determinism in ``TyLitMap`` by using deterministic maps for strings (:ghc-ticket:`26846`) +- Fixed non-determinism in ``WithHsDocIdentifiers`` binary instance by using a stable sort (:ghc-ticket:`26858`) +- Added ``-mcmodel=medium`` module flag to generated LLVM IR on LoongArch +- Pass the ``mcmodel=medium`` parameter to CC via GHC on LoongArch +- Pass the ``+evex512`` attribute to LLVM 18+ when ``-mavx512f`` is set (:ghc-ticket:`26410`) +- Improved error handling in ``getPackageArchives`` (:ghc-ticket:`26383`) +- Fixed a shadowing bug in implicit parameters (:ghc-ticket:`26451`) +- Fixed a subtle bug in ``GHC.Core.Utils.mkTick`` that could generate type-incorrect code (:ghc-ticket:`26772`) +- Fixed a long-standing interaction between ticks and casts in ``Eliminate Identity Cases`` +- ``NamedDefaults``: require the class to be standard or have an in-scope default declaration (:ghc-ticket:`25775`, :ghc-ticket:`25778`) + +Runtime System +~~~~~~~~~~~~~~ + +- Fixed a deadlock with eventlog flush interval and RTS shutdown (:ghc-ticket:`26573`) +- Fixed eager black holes: record mutated closure and fix assertion (:ghc-ticket:`26495`) +- Fixed object file format detection in ``loadArchive`` (:ghc-ticket:`26630`) +- Use ``INFO_TABLE_CONSTR`` for ``stg_dummy_ret_closure`` (:ghc-ticket:`26745`) +- Fixed lost wakeups in ``threadPaused`` for threads blocked on black holes (:ghc-ticket:`26324`) +- Fixed ``stg_AP_STACK`` to push the correct update frame (:ghc-ticket:`26324`) +- Fixed potential loop in heap reservation logic on certain kernels (:ghc-ticket:`26151`) +- Don't use CAS without ``PARALLEL_GC`` on +- Switch prim to use modern atomic compiler builtins (:ghc-ticket:`26729`) +- Removed obsolete ``CC_SUPPORTS_TLS``, ``HAS_VISIBILITY_HIDDEN``, ``COMPILING_WINDOWS_DLL``, + and ``__GNUC__``-related logic +- Removed the ``-O3`` pragma hack in ``Hash.c`` +- Removed unnecessary Cabal flags + +Code Generation +~~~~~~~~~~~~~~~ + +- NCG for PPC: add pattern for ``CmmRegOff`` to ``iselExpr64`` (:ghc-ticket:`26828`) +- PPC NCG: Use libcall for 64-bit ``cmpxchg`` on 32-bit PowerPC (:ghc-ticket:`23969`) + +Bytecode Compiler +~~~~~~~~~~~~~~~~~ + +- Use 32 bits for breakpoint index (:ghc-ticket:`26325`) + +``base`` library +~~~~~~~~~~~~~~~~ + +- Expose ``Backtraces`` constructor and fields (:ghc-ticket:`26049`) +- Store ``StackTrace`` and ``StackSnapshot`` in ``Backtraces``, deferring decoding until display +- Evaluate backtraces for ``error`` exceptions at the moment they are thrown + (`CLC proposal #383 <https://github.com/haskell/core-libraries-committee/issues/383>`__, + :ghc-ticket:`26751`) + +``ghc-experimental`` library +~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +- Fixed ``GHC.Exception.Backtrace.Experimental`` module +- Added ability to customise the collection of exception annotations + +``ghc-pkg`` +~~~~~~~~~~~~ + +- Removed ``traceId`` from ``ghc-pkg`` executable + +``ghc-toolchain`` +~~~~~~~~~~~~~~~~~ + +- Dropped ``ld.gold`` from merge object command + +Build System +~~~~~~~~~~~~ + +- Added ``hpc`` to release script +- Use a response file to invoke GHC when analysing dependencies +- Fixed ``GHC.Platform.Host`` generation for cross stage1 (:ghc-ticket:`26449`) +- Fixed runtime error during ``users_guide`` build with Sphinx 9.1.0 (:ghc-ticket:`26810`) +- Added ``ghc-{experimental,internal}.cabal`` to the list of dependencies of the doc target (:ghc-ticket:`26738`) + +Wasm Backend +~~~~~~~~~~~~ + +- Fixed dyld handling for forward declared ``GOT.func`` items (:ghc-ticket:`26430`) +- Ensure ``setKeepCAFs()`` is called in GHCi (:ghc-ticket:`26106`) +- Prevent bundlers from resolving ``import("node:timers")`` +- Use ``import.meta.main`` for proper distinction of Node.js main modules (:ghc-ticket:`26916`) + +Included libraries +~~~~~~~~~~~~~~~~~~ + +The package database provided with this distribution also contains a number of +packages other than GHC itself. See the changelogs provided with these packages +for further change information. + +.. ghc-package-list:: + + compiler/ghc.cabal: The compiler itself + libraries/array/array.cabal: Dependency of ``ghc`` library + libraries/base/base.cabal: Core library + libraries/binary/binary.cabal: Dependency of ``ghc`` library + libraries/bytestring/bytestring.cabal: Dependency of ``ghc`` library + libraries/Cabal/Cabal/Cabal.cabal: Dependency of ``ghc-pkg`` utility + libraries/Cabal/Cabal-syntax/Cabal-syntax.cabal: Dependency of ``ghc-pkg`` utility + libraries/containers/containers/containers.cabal: Dependency of ``ghc`` library + libraries/deepseq/deepseq.cabal: Dependency of ``ghc`` library + libraries/directory/directory.cabal: Dependency of ``ghc`` library + libraries/exceptions/exceptions.cabal: Dependency of ``ghc`` and ``haskeline`` library + libraries/file-io/file-io.cabal: Dependency of ``directory`` library + libraries/filepath/filepath.cabal: Dependency of ``ghc`` library + libraries/ghc-boot/ghc-boot.cabal: Internal compiler library + libraries/ghc-boot-th/ghc-boot-th.cabal: Internal compiler library + libraries/ghc-compact/ghc-compact.cabal: Core library + libraries/ghc-experimental/ghc-experimental.cabal: Core library + libraries/ghc-heap/ghc-heap.cabal: GHC heap-walking library + libraries/ghci/ghci.cabal: The REPL interface + libraries/ghc-internal/ghc-internal.cabal: Core library + libraries/ghc-platform/ghc-platform.cabal: Internal library + libraries/ghc-prim/ghc-prim.cabal: Core library + libraries/haskeline/haskeline.cabal: Dependency of ``ghci`` executable + libraries/hpc/hpc.cabal: Dependency of ``hpc`` executable + libraries/integer-gmp/integer-gmp.cabal: Core library + libraries/mtl/mtl.cabal: Dependency of ``Cabal`` library + libraries/os-string/os-string.cabal: Dependency of ``filepath`` library + libraries/parsec/parsec.cabal: Dependency of ``Cabal`` library + libraries/pretty/pretty.cabal: Dependency of ``ghc`` library + libraries/process/process.cabal: Dependency of ``ghc`` library + libraries/semaphore-compat/semaphore-compat.cabal: Dependency of ``ghc`` library + libraries/stm/stm.cabal: Dependency of ``haskeline`` library + libraries/template-haskell/template-haskell.cabal: Core library + libraries/terminfo/terminfo.cabal: Dependency of ``haskeline`` library + libraries/text/text.cabal: Dependency of ``Cabal`` library + libraries/time/time.cabal: Dependency of ``ghc`` library + libraries/transformers/transformers.cabal: Dependency of ``ghc`` library + libraries/unix/unix.cabal: Dependency of ``ghc`` library + libraries/Win32/Win32.cabal: Dependency of ``ghc`` library + libraries/xhtml/xhtml.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-api/haddock-api.cabal: Dependency of ``haddock`` executable + utils/haddock/haddock-library/haddock-library.cabal: Dependency of ``haddock`` executable ===================================== docs/users_guide/release-notes.rst ===================================== @@ -7,3 +7,4 @@ Release notes 9.12.1-notes 9.12.2-notes 9.12.3-notes + 9.12.4-notes ===================================== libraries/Win32 ===================================== @@ -1 +1 @@ -Subproject commit 027cbcf0de25d681823ea92fb545a2604c3a6a8b +Subproject commit 7d0772bb265a6c59eb14c441cf65c778895528df ===================================== 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: 4.21.1.0 +version: 4.21.2.0 -- NOTE: Don't forget to update ./changelog.md license: BSD-3-Clause ===================================== libraries/base/changelog.md ===================================== @@ -1,7 +1,9 @@ # Changelog for [`base` package](http://hackage.haskell.org/package/base) -## 4.21.2.0 *TBA* - * Evaluate backtraces for "error" exceptions at the moment they are thrown. ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383)) +## 4.21.2.0 *March 2026* + * Expose `Backtraces` constructor and fields ([CLC proposal #199](https://github.com/haskell/core-libraries-committee/issues/199), [#26049](https://gitlab.haskell.org/ghc/ghc/-/issues/26049)) + * Store `StackTrace` and `StackSnapshot` in `Backtraces`, deferring decoding until display + * Evaluate backtraces for "error" exceptions at the moment they are thrown ([CLC proposal #383](https://github.com/haskell/core-libraries-committee/issues/383), [#26751](https://gitlab.haskell.org/ghc/ghc/-/issues/26751)) ## 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)). ===================================== libraries/directory ===================================== @@ -1 +1 @@ -Subproject commit 005fa061171a55d35ce8dfe936cf3703525a8616 +Subproject commit 8c712e834f277544fc03e96dfbbb769126dc0a7c ===================================== libraries/exceptions ===================================== @@ -1 +1 @@ -Subproject commit b3a88ccc70acd7aa83be64235ab8c3ef1f08e96b +Subproject commit a3da039855479e3c8542e8b45986599d0414ff68 ===================================== libraries/file-io ===================================== @@ -1 +1 @@ -Subproject commit 21303160b5dd91d6197bd1d20a8796ba2a819d4e +Subproject commit 516e57977dfc031de5e00e8fc0bf5ab4cc6802f5 ===================================== libraries/filepath ===================================== @@ -1 +1 @@ -Subproject commit 65b0f8f31aac4a306135e27734988327f8eb1e6f +Subproject commit baac7d7e76449f76fc6785e77206edb5530b6bfb ===================================== libraries/haskeline ===================================== @@ -1 +1 @@ -Subproject commit 5f4bf62bf1f4846ad0b8d1fa9d45f902e3934511 +Subproject commit d0d8902f88fde549f76771feeb40f16941a22a9f ===================================== libraries/mtl ===================================== @@ -1 +1 @@ -Subproject commit 37cbd924cb71eba591a2e2b6b131767f632d22c9 +Subproject commit 4b5080f43cbc372a437d5fecb144c7b75aadd86b ===================================== libraries/os-string ===================================== @@ -1 +1 @@ -Subproject commit c08666bf7bf528e607fc1eacc20032ec59e69df3 +Subproject commit 71f66e1af2288867becaa567dfb10c1d791b0343 ===================================== libraries/unix ===================================== @@ -1 +1 @@ -Subproject commit 90e7d70de337ad759102b2445ebef6980684a9d3 +Subproject commit 60f432b76871bd7787df07dd3e2a567caba393f5 ===================================== testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-mingw32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/base-exports.stdout-ws-32 ===================================== @@ -322,7 +322,7 @@ module Control.Exception.Backtrace where type BacktraceMechanism :: * data BacktraceMechanism = CostCentreBacktrace | HasCallStackBacktrace | ExecutionBacktrace | IPEBacktrace type Backtraces :: * - data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe [GHC.Internal.ExecutionStack.Internal.Location], btrIpe :: GHC.Internal.Maybe.Maybe [GHC.Internal.Stack.CloneStack.StackEntry]} + data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces displayBacktraces :: Backtraces -> GHC.Internal.Base.String getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool ===================================== testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 ===================================== @@ -4324,13 +4324,13 @@ module GHC.Exception.Backtrace.Experimental where data Backtraces = Backtraces {btrCostCentre :: GHC.Internal.Maybe.Maybe (GHC.Internal.Ptr.Ptr GHC.Internal.Stack.CCS.CostCentreStack), btrHasCallStack :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.Types.CallStack, btrExecutionStack :: GHC.Internal.Maybe.Maybe GHC.Internal.ExecutionStack.Internal.StackTrace, btrIpe :: GHC.Internal.Maybe.Maybe GHC.Internal.Stack.CloneStack.StackSnapshot} type CollectExceptionAnnotationMechanism :: * data CollectExceptionAnnotationMechanism = ... - collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Internal.Types.IO Backtraces - collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation + collectBacktraces :: (?callStack::GHC.Internal.Stack.Types.CallStack) => GHC.Types.IO Backtraces + collectExceptionAnnotation :: GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO GHC.Internal.Exception.Context.SomeExceptionAnnotation displayBacktraces :: Backtraces -> GHC.Internal.Base.String - getBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.IO GHC.Internal.Types.Bool - getCollectExceptionAnnotationMechanism :: GHC.Internal.Types.IO CollectExceptionAnnotationMechanism - setBacktraceMechanismState :: BacktraceMechanism -> GHC.Internal.Types.Bool -> GHC.Internal.Types.IO () - setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Internal.Types.IO a) -> GHC.Internal.Types.IO () + getBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.IO GHC.Types.Bool + getCollectExceptionAnnotationMechanism :: GHC.Types.IO CollectExceptionAnnotationMechanism + setBacktraceMechanismState :: BacktraceMechanism -> GHC.Types.Bool -> GHC.Types.IO () + setCollectExceptionAnnotation :: forall a. GHC.Internal.Exception.Context.ExceptionAnnotation a => (GHC.Internal.Stack.Types.HasCallStack => GHC.Types.IO a) -> GHC.Types.IO () module GHC.PrimOps where -- Safety: Unsafe View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a86f8f8d8a1f121bd0d49672efc6aa… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a86f8f8d8a1f121bd0d49672efc6aa… 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] 13 commits: Correct `hIsReadable` and `hIsWritable` for duplex handles
by Marge Bot (＠marge-bot) 05 Mar '26

05 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 4a186d26 by Wolfgang Jeltsch at 2026-03-04T19:47:10-05:00 Correct `hIsReadable` and `hIsWritable` for duplex handles This contribution implements CLC proposal #371. It changes `hIsReadable` and `hIsWritable` such that they always throw a respective exception when encountering a closed or semi-closed handle, not just in the case of a file handle. - - - - - a297f9c7 by Wolfgang Jeltsch at 2026-03-04T19:47:10-05:00 Document `SemiClosedHandle` - - - - - e7ee773c by Wolfgang Jeltsch at 2026-03-04T19:47:10-05:00 Tell users what “semi-closed” means for duplex handles - - - - - 128689e0 by Cheng Shao at 2026-03-04T19:47:13-05:00 compiler: add myCapabilityExpr to GHC.Cmm.Utils This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is computed from `BaseReg`. It's convenient for codegen logic where one needs to pass the current Capability's pointer. - - - - - 31a52893 by Cheng Shao at 2026-03-04T19:47:13-05:00 compiler: lower tryPutMVar# into a ccall directly This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it completely and making the compiler lower `tryPutMVar#` into a ccall to `performTryPutMVar` directly, without landing into an intermediate C or Cmm function. `performTryPutMVar` is promoted to a public RTS function with default visibility, and the compiler lowering logic takes into account the C ABI of `performTryPutMVar` and converts from C Bool to primop's `Int#` result properly. - - - - - f3c99a09 by Ilias Tsitsimpis at 2026-03-04T19:47:17-05:00 Fix determinism of linker arguments The switch from Data.Map to UniqMap in 3b5be05ac29 introduced non-determinism in the order of packages passed to the linker. This resulted in non-reproducible builds where the DT_NEEDED entries in dynamic libraries were ordered differently across builds. Fix the regression by explicitly sorting the package list derived from UniqMap. Fixes #26838 - - - - - d9df35f2 by Matthew Pickering at 2026-03-04T19:47:18-05:00 determinism: Use a deterministic renaming when writing bytecode files Now when writing the bytecode file, a counter and substitution are used to provide deterministic keys to local variables (rather than relying on uniques). This change ensures that `.gbc` are produced deterministically. Fixes #26499 - - - - - 4b1a53d4 by Teo Camarasu at 2026-03-04T19:47:20-05:00 ghc-internal: delete Version hs-boot loop Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module. Resolves #26940 - - - - - a1e71623 by Sylvain Henry at 2026-03-04T19:47:48-05:00 Linker: implement support for COMMON symbols (#6107) Add some support for COMMON symbols. We don't support common symbols having different sizes where the larger one is allocated after the smaller one. The linker will fail with an appropriate error message if it happens. - - - - - 75dbedca by Cheng Shao at 2026-03-04T19:47:49-05:00 compiler: fix redundant import of GHC.Hs.Lit This patch removes a redundant import of `GHC.Hs.Lit` which causes a ghc build failure with validate flavours when bootstrapping from 9.14. Fixes #26972. - - - - - 85726253 by Cheng Shao at 2026-03-04T19:47:49-05:00 compiler: avoid unneeded traversals in GHC.Unit.State Following !15591, this patch avoids unneeded traversals in `reportCycles`/`reportUnusable` when log verbosity is below given threshold. Also applies `logVerbAtLeast` when appropriate. Co-authored-by: Codex <codex(a)openai.com> - - - - - 382b1b78 by Cheng Shao at 2026-03-04T19:47:50-05:00 ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool This patch fixes redundant import in `GHC.Internal.Event.Windows.ManagedThreadPool` that causes a compilation error when building windows target with validate flavours and bootstrapping from 9.14. Fixes #26976. - - - - - 240cc9ab by sheaf at 2026-03-04T19:47:51-05:00 System.Info.fullCompilerVersion: add 'since' annot Fixes #26973 - - - - - 35 changed files: - compiler/GHC/ByteCode/Serialize.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Hs/Type.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/Unit/State.hs - compiler/GHC/Utils/Error.hs - libraries/base/changelog.md - libraries/base/src/GHC/Unicode.hs - libraries/base/src/System/Info.hs - libraries/ghc-internal/ghc-internal.cabal.in - − libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Types.hs - libraries/ghc-internal/src/GHC/Internal/Unicode.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Version.hs - libraries/ghc-internal/tools/ucd2haskell/exe/UCD2Haskell/ModuleGenerators.hs - rts/Linker.c - rts/LinkerInternals.h - rts/PrimOps.cmm - rts/RtsSymbols.c - rts/Threads.c - rts/Threads.h - rts/include/rts/Threads.h - rts/include/stg/MiscClosures.h - rts/linker/Elf.c - rts/linker/MachO.c - rts/linker/PEi386.c - testsuite/tests/rts/linker/Makefile - + testsuite/tests/rts/linker/T6107.hs - + testsuite/tests/rts/linker/T6107.stdout - + testsuite/tests/rts/linker/T6107_sym1.s - + testsuite/tests/rts/linker/T6107_sym2.s - testsuite/tests/rts/linker/all.T The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/188d58e11dc90cb24a3b60ac6e5aec… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/188d58e11dc90cb24a3b60ac6e5aec… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/regression-tests-2] Add regression test for #15588
by Simon Jakobi (＠sjakobi2) 05 Mar '26

05 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/regression-tests-2 at Glasgow Haskell Compiler / GHC Commits: f917ac96 by Simon Jakobi at 2026-03-04T23:34:01+01:00 Add regression test for #15588 Closes #15588. - - - - - 3 changed files: - + testsuite/tests/dependent/should_fail/T15588.hs - + testsuite/tests/dependent/should_fail/T15588.stderr - testsuite/tests/dependent/should_fail/all.T Changes: ===================================== testsuite/tests/dependent/should_fail/T15588.hs ===================================== @@ -0,0 +1,25 @@ +{- This program used to cause a panic (#15588), but it should possibly even be +accepted. See #15589. -} +{-# LANGUAGE AllowAmbiguousTypes #-} +{-# LANGUAGE DataKinds #-} +{-# LANGUAGE PolyKinds #-} +{-# LANGUAGE ScopedTypeVariables #-} +{-# LANGUAGE TypeFamilies #-} +{-# LANGUAGE TypeOperators #-} +module T15588 where + +import Data.Proxy +import Data.Type.Equality +import Data.Type.Bool +import Data.Kind + +data SameKind :: forall k. k -> k -> Type +type family IfK (e :: Proxy (j :: Bool)) (f :: m) (g :: n) :: If j m n where + IfK (_ :: Proxy True) f _ = f + IfK (_ :: Proxy False) _ g = g + +y :: forall ck (c :: ck). ck :~: Proxy True -> () +y Refl = let x :: forall a b (d :: a). SameKind (IfK c b d) d + x = undefined + in () + ===================================== testsuite/tests/dependent/should_fail/T15588.stderr ===================================== @@ -0,0 +1,7 @@ +T15588.hs:18:9: error: [GHC-25897] + • Couldn't match kind ‘j’ with ‘True’ + Expected kind ‘Proxy j’, + but ‘_ :: Proxy True’ has kind ‘Proxy True’ + • In the first argument of ‘IfK’, namely ‘(_ :: Proxy True)’ + In the type family declaration for ‘IfK’ + ===================================== testsuite/tests/dependent/should_fail/all.T ===================================== @@ -34,6 +34,7 @@ test('T15215', normal, compile_fail, ['']) test('T15308', normal, compile_fail, ['-fno-print-explicit-kinds']) test('T15343', normal, compile_fail, ['']) test('T15380', normal, compile_fail, ['']) +test('T15588', normal, compile_fail, ['']) test('T15591b', normal, compile_fail, ['']) test('T15591c', normal, compile_fail, ['']) test('T15743c', normal, compile_fail, ['']) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f917ac96e733d77113768f00b044a65… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f917ac96e733d77113768f00b044a65… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26985] ghc-internal: move parts of Weak finalizer to base
by Teo Camarasu (＠teo) 05 Mar '26

05 Mar '26

Teo Camarasu pushed to branch wip/T26985 at Glasgow Haskell Compiler / GHC Commits: 264ff562 by Teo Camarasu at 2026-03-04T21:55:41+00:00 ghc-internal: move parts of Weak finalizer to base We move parts of the Weak finalizer interface to `base` only the parts that the RTS needs to know about are kept in `ghc-internal`. This lets us then prune our imports somewhat and get rid of some SOURCE imports. Resolves #26985 - - - - - 9 changed files: - libraries/base/src/GHC/Weak.hs - libraries/base/src/GHC/Weak/Finalize.hs - − libraries/base/src/GHC/Weak/Finalizehs - libraries/base/src/System/Mem/Weak.hs - − libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot - − libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs-boot - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghc-internal/src/GHC/Internal/Weak.hs - libraries/ghc-internal/src/GHC/Internal/Weak/Finalize.hs Changes: ===================================== libraries/base/src/GHC/Weak.hs ===================================== @@ -29,3 +29,5 @@ module GHC.Weak ) where import GHC.Internal.Weak +import GHC.Internal.Weak.Finalize +import GHC.Weak.Finalize ===================================== libraries/base/src/GHC/Weak/Finalize.hs ===================================== @@ -17,6 +17,14 @@ import GHC.Internal.Weak.Finalize -- These imports can be removed once runFinalizerBatch is removed, -- as can MagicHash above. import GHC.Internal.Base (Int, Array#, IO, State#, RealWorld) +import GHC.Internal.Base +import GHC.Internal.Exception +import GHC.Internal.IORef +import GHC.Internal.Conc.Sync (labelThreadByteArray#, myThreadId) +import GHC.Internal.IO (catchException, unsafePerformIO) +import GHC.Internal.IO.Handle.Types (Handle) +import GHC.Internal.IO.Handle.Text (hPutStrLn) +import GHC.Internal.Encoding.UTF8 (utf8EncodeByteArray#) {-# DEPRECATED runFinalizerBatch @@ -36,3 +44,20 @@ runFinalizerBatch :: Int -> Array# (State# RealWorld -> State# RealWorld) -> IO () runFinalizerBatch = GHC.Internal.Weak.Finalize.runFinalizerBatch + +-- | Set the global action called to report exceptions thrown by weak pointer +-- finalizers to the user. +-- +-- @since base-4.18.0.0 +setFinalizerExceptionHandler :: (SomeException -> IO ()) -> IO () +setFinalizerExceptionHandler = writeIORef finalizerExceptionHandler + +-- | An exception handler for 'Handle' finalization that prints the error to +-- the given 'Handle', but doesn't rethrow it. +-- +-- @since base-4.18.0.0 +printToHandleFinalizerExceptionHandler :: Handle -> SomeException -> IO () +printToHandleFinalizerExceptionHandler hdl se = + hPutStrLn hdl msg `catchException` (\(SomeException _) -> return ()) + where + msg = "Exception during weak pointer finalization (ignored): " ++ displayException se ++ "\n" ===================================== libraries/base/src/GHC/Weak/Finalizehs deleted ===================================== ===================================== libraries/base/src/System/Mem/Weak.hs ===================================== @@ -91,6 +91,7 @@ module System.Mem.Weak ( import Prelude import GHC.Internal.Weak +import GHC.Weak -- | A specialised version of 'mkWeak', where the key and the value are -- the same object: ===================================== libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot deleted ===================================== @@ -1,70 +0,0 @@ -{-# LANGUAGE MagicHash, NoImplicitPrelude #-} -{-# OPTIONS_HADDOCK not-home #-} - ------------------------------------------------------------------------------ --- | --- Module : GHC.Internal.Conc.Sync [boot] --- Copyright : (c) The University of Glasgow, 1994-2002 --- License : see libraries/base/LICENSE --- --- Maintainer : ghc-devs(a)haskell.org --- Stability : internal --- Portability : non-portable (GHC extensions) --- --- Basic concurrency stuff. --- ------------------------------------------------------------------------------ - -module GHC.Internal.Conc.Sync - ( forkIO, - ThreadId(..), - myThreadId, - showThreadId, - ThreadStatus(..), - threadStatus, - sharedCAF, - labelThreadByteArray# - ) where - -import GHC.Internal.Base -import GHC.Internal.Ptr - -forkIO :: IO () -> IO ThreadId - -data ThreadId = ThreadId ThreadId# - -data BlockReason - = BlockedOnMVar - -- ^blocked on 'MVar' - {- possibly (see 'threadstatus' below): - | BlockedOnMVarRead - -- ^blocked on reading an empty 'MVar' - -} - | BlockedOnBlackHole - -- ^blocked on a computation in progress by another thread - | BlockedOnException - -- ^blocked in 'throwTo' - | BlockedOnSTM - -- ^blocked in 'retry' in an STM transaction - | BlockedOnForeignCall - -- ^currently in a foreign call - | BlockedOnOther - -- ^blocked on some other resource. Without @-threaded@, - -- I\/O and 'threadDelay' show up as 'BlockedOnOther', with @-threaded@ - -- they show up as 'BlockedOnMVar'. - -data ThreadStatus - = ThreadRunning - -- ^the thread is currently runnable or running - | ThreadFinished - -- ^the thread has finished - | ThreadBlocked BlockReason - -- ^the thread is blocked on some resource - | ThreadDied - -- ^the thread received an uncaught exception - -myThreadId :: IO ThreadId -showThreadId :: ThreadId -> String -threadStatus :: ThreadId -> IO ThreadStatus -sharedCAF :: a -> (Ptr a -> IO (Ptr a)) -> IO a -labelThreadByteArray# :: ThreadId -> ByteArray# -> IO () ===================================== libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs-boot deleted ===================================== @@ -1,8 +0,0 @@ -{-# LANGUAGE NoImplicitPrelude #-} - -module GHC.Internal.IO.Handle.Text ( hPutStrLn ) where - -import GHC.Internal.Base (String, IO) -import {-# SOURCE #-} GHC.Internal.IO.Handle.Types (Handle) - -hPutStrLn :: Handle -> String -> IO () ===================================== libraries/ghc-internal/src/GHC/Internal/TopHandler.hs ===================================== @@ -50,6 +50,8 @@ import GHC.Internal.IO.Handle import GHC.Internal.IO.StdHandles import GHC.Internal.IO.Exception import GHC.Internal.Weak +import GHC.Internal.Weak.Finalize +import GHC.Internal.IO.Handle.Types () #if defined(mingw32_HOST_OS) import GHC.Internal.ConsoleHandler as GHC.ConsoleHandler ===================================== libraries/ghc-internal/src/GHC/Internal/Weak.hs ===================================== @@ -24,19 +24,9 @@ module GHC.Internal.Weak ( mkWeak, deRefWeak, finalize, - - -- * Handling exceptions - -- | When an exception is thrown by a finalizer called by the - -- garbage collector, GHC calls a global handler which can be set with - -- 'setFinalizerExceptionHandler'. Note that any exceptions thrown by - -- this handler will be ignored. - setFinalizerExceptionHandler, - getFinalizerExceptionHandler, - printToHandleFinalizerExceptionHandler ) where import GHC.Internal.Base -import GHC.Internal.Weak.Finalize {-| A weak pointer object with a key and a value. The value has type @v@. ===================================== libraries/ghc-internal/src/GHC/Internal/Weak/Finalize.hs ===================================== @@ -4,26 +4,17 @@ {-# LANGUAGE Unsafe #-} module GHC.Internal.Weak.Finalize - ( -- * Handling exceptions - -- | When an exception is thrown by a finalizer called by the - -- garbage collector, GHC calls a global handler which can be set with - -- 'setFinalizerExceptionHandler'. Note that any exceptions thrown by - -- this handler will be ignored. - setFinalizerExceptionHandler - , getFinalizerExceptionHandler - , printToHandleFinalizerExceptionHandler - -- * Internal + ( getFinalizerExceptionHandler , runFinalizerBatch + , finalizerExceptionHandler ) where import GHC.Internal.Base -import GHC.Internal.Exception -import GHC.Internal.IORef -import {-# SOURCE #-} GHC.Internal.Conc.Sync (labelThreadByteArray#, myThreadId) -import GHC.Internal.IO (catchException, unsafePerformIO) -import {-# SOURCE #-} GHC.Internal.IO.Handle.Types (Handle) -import {-# SOURCE #-} GHC.Internal.IO.Handle.Text (hPutStrLn) -import GHC.Internal.Encoding.UTF8 (utf8EncodeByteArray#) +import GHC.Internal.Conc.Sync ( labelThreadByteArray#, myThreadId ) +import GHC.Internal.Encoding.UTF8 ( utf8EncodeByteArray# ) +import GHC.Internal.Exception ( SomeException(..) ) +import GHC.Internal.IO ( catchException, unsafePerformIO ) +import GHC.Internal.IORef ( IORef, newIORef, readIORef ) data ByteArray = ByteArray ByteArray# @@ -75,20 +66,3 @@ finalizerExceptionHandler = unsafePerformIO $ newIORef (const $ return ()) -- @since base-4.18.0.0 getFinalizerExceptionHandler :: IO (SomeException -> IO ()) getFinalizerExceptionHandler = readIORef finalizerExceptionHandler - --- | Set the global action called to report exceptions thrown by weak pointer --- finalizers to the user. --- --- @since base-4.18.0.0 -setFinalizerExceptionHandler :: (SomeException -> IO ()) -> IO () -setFinalizerExceptionHandler = writeIORef finalizerExceptionHandler - --- | An exception handler for 'Handle' finalization that prints the error to --- the given 'Handle', but doesn't rethrow it. --- --- @since base-4.18.0.0 -printToHandleFinalizerExceptionHandler :: Handle -> SomeException -> IO () -printToHandleFinalizerExceptionHandler hdl se = - hPutStrLn hdl msg `catchException` (\(SomeException _) -> return ()) - where - msg = "Exception during weak pointer finalization (ignored): " ++ displayException se ++ "\n" View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/264ff5627ace715d9b179bd8a1e64e6… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/264ff5627ace715d9b179bd8a1e64e6… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/T26985
by Teo Camarasu (＠teo) 05 Mar '26

05 Mar '26

Teo Camarasu pushed new branch wip/T26985 at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/T26985 You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26930] ghc-internal: float Generics to top of module graph
by Teo Camarasu (＠teo) 05 Mar '26

05 Mar '26

Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: a7eb4232 by Teo Camarasu at 2026-03-04T21:02:45+00:00 ghc-internal: float Generics to top of module graph We remove GHC.Internal.Generics from the critical path of the `ghc-internal` module graph. GHC.Internal.Generics used to be in the middle of the module graph, but now it is nearer the top (built later). This change thins out the module graph and allows us to get rid of the ByteOrder hs-boot file. We implement this by moving Generics instances from the module where the datatype is defined to the GHC.Internal.Generics module. This trades off increasing the compiled size of GHC.Internal.Generics with reducing the dependency footprint of datatype modules. Not all instances are moved to GHC.Internal.Generics. For instance, `GHC.Internal.Control.Monad.Fix` keeps its instance as it is one of the very last modules compiled in `ghc-internal` and so inverting the relationship here would risk adding GHC.Internal.Generics back onto the critical path. We also don't change modules that are re-exported from the `template-haskell` or `ghc-heap`. This is done to make it easy to eventually move `Generics` to `base` once something like #26657 is implemented. Resolves #26930 Metric Decrease: T21839c - - - - - 21 changed files: - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - testsuite/tests/ghci/scripts/ListTuplePunsPpr.stdout - testsuite/tests/ghci/scripts/T10963.stderr - testsuite/tests/ghci/scripts/ghci064.stdout - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a7eb4232369e76db5045014394666b6… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a7eb4232369e76db5045014394666b6… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/regression-tests-2] Add regression test for #12640
by Simon Jakobi (＠sjakobi2) 05 Mar '26

05 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/regression-tests-2 at Glasgow Haskell Compiler / GHC Commits: ec46588f by Simon Jakobi at 2026-03-04T22:04:05+01:00 Add regression test for #12640 Closes #12640. - - - - - 3 changed files: - + testsuite/tests/simplCore/should_compile/T12640.hs - + testsuite/tests/simplCore/should_compile/T12640.stderr - testsuite/tests/simplCore/should_compile/all.T Changes: ===================================== testsuite/tests/simplCore/should_compile/T12640.hs ===================================== @@ -0,0 +1,18 @@ +{-# LANGUAGE MultiParamTypeClasses, FunctionalDependencies #-} +module T12640 where + +class Ex2 a b c | a b -> c where + (+++) :: a -> b -> c + +instance Ex2 Bool Bool Bool where + (+++) = ex_or + +{-# INLINE [2] ex_or #-} +ex_or = (||) + +{-# RULES +"force-inline" forall a b . ex_or a b = a || b + #-} + +main = print (True +++ True) + ===================================== testsuite/tests/simplCore/should_compile/T12640.stderr ===================================== @@ -0,0 +1,2 @@ +Rule fired: Class op show (BUILTIN) +Rule fired: force-inline (T12640) ===================================== testsuite/tests/simplCore/should_compile/all.T ===================================== @@ -227,6 +227,7 @@ test('T9509', test('T12603', normal, makefile_test, ['T12603']) +test('T12640', [grep_errmsg(r'force-inline')], compile, ['-O2 -ddump-rule-firings']) test('T12877', normal, makefile_test, ['T12877']) test('T13027', normal, compile, ['']) test('T13025', View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ec46588f79d0048138afd7049af90c8… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ec46588f79d0048138afd7049af90c8… You're receiving this email because of your account on gitlab.haskell.org.

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