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[Git][ghc/ghc][wip/dcoutts/idle-gc] 15 commits: Introduce `-fimport-loaded-targets` GHCi flag
by Duncan Coutts (＠dcoutts) 22 Mar '26

22 Mar '26

Duncan Coutts pushed to branch wip/dcoutts/idle-gc at Glasgow Haskell Compiler / GHC Commits: 86bd9bfc by fendor at 2026-03-17T23:46:09-04:00 Introduce `-fimport-loaded-targets` GHCi flag This new flag automatically adds all loaded targets to the GHCi session by adding an `InteractiveImport` for the loaded targets. By default, this flag is disabled, as it potentially increases memory-usage. This interacts with the flag `-fno-load-initial-targets` as follows: * If no module is loaded, no module is added as an interactive import. * If a reload loads up to a module, all loaded modules are added as interactive imports. * Unloading modules removes them from the interactive context. Fixes #26866 by rendering the use of a `-ghci-script` to achieve the same thing redundant. - - - - - e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Remove GHC.Internal.Data.Eq It served no purpose other than being a re-export. - - - - - 6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Refine GHC.Internal.Base imports Removed re-exports from GHC.Internal.Base. This reveals some modules that don't actually use anything *defined* in GHC.Internal.Base, and that can be pushed down a little in the import graph. Replaced most imports of GHC.Internal.Base with non-wildcard imports from modules where the identifiers are actually defined. Part of #26834 Metric Decrease: T5321FD - - - - - 7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00 ci: clone, don't copy when creating the cabal cache Also removed WINDOWS_HOST variable detected via uname - we now just check whether the CI job has windows in its name. This works because we only ever care about it if the respective job is not a cross job. We also statically detect darwin cross jobs in the same way. We only ever have darwin -> darwin cross jobs so this is enough to detect the host reliably. - - - - - f8817879 by mangoiv at 2026-03-17T23:48:44-04:00 ci: mark size_hello_artifact fragile on darwin x86 The size of the x86_64 hello artifact is not stable which results in flaky testruns. Resolves #26814 - - - - - 41e4a120 by Duncan Coutts at 2026-03-20T14:35:41+00:00 Remove signal-based ticker implementations Fixes issue #27073 All supported platforms should work with the pthreads + nanosleep based ticker implementation. This avoids all the problems with using signals. In practice, all supported platforms were probably using the non-signal tickers already, which is probably why we do not get lots of reports about deadlocks and other weirdness: we were definately using functions that are not async signal safe in the tick handler (such as fflush to flussh the eventlog). Only Solaris was explicitly using the timer_create ticker impl, and even Solaris could probably use the pthreads one (if anyone cared: Solaris is no longer a Teir 3 supported platform). Plausibly the only supported platform that this will change will be AIX, which should now use the pthreads impl. - - - - - b2bd2031 by Duncan Coutts at 2026-03-20T14:35:41+00:00 Tidy up some timer/ticker comments elsewhere - - - - - 33cb0627 by Duncan Coutts at 2026-03-20T14:35:41+00:00 Remove now-unused install_vtalrm_handler Support function used by both of the signal-based ticker implementations. - - - - - 2a3c5355 by Duncan Coutts at 2026-03-20T14:36:24+00:00 No longer probe for timer_create in rts/configure It was only used by the TimerCreate.c ticker impl. - - - - - 77f009cc by Duncan Coutts at 2026-03-22T14:50:01+00:00 Note that rtsTimerSignal is deprecated. - - - - - 08ce2396 by Duncan Coutts at 2026-03-22T14:52:23+00:00 Add an FdWakup module for posix I/O managers This will be used to implement wakeupIOManager for in-RTS I/O managers. It provides a notification/wakeup mechanism using FDs, suitable for situations when I/O managers are blocked on a set of fds anyway. - - - - - e83a7b27 by Duncan Coutts at 2026-03-22T14:52:23+00:00 Add prompt shutdown to the pthread ticker implementation. The Linux timerfd ticker monitors a pipe which is used by exitTicker to ensure a prompt wakeup and shutdown. The pthread ticker lacked this and so would only exit at the next ticker wakeup (10ms by default). This patch adds the same mechanism to the pthread ticker. This changes the pthread ticker from waiting by using nanosleep() to waiting using either ppoll() or select(), so that it can wait on both a time and a file descriptor. On Linux at least, a test program to compare the timing jitter of these APIs shows that using nanpsleep, ppoll or select makes no statistical difference to the maximum or average jitter. This is a step towards unifying the posix ticker implementations, so that we can have just one portable one (albeit with some limited cpp). It is also a step towards using the ticker as part of a more general implementation of wakeUpRts, since this will require a method to wake the rts from a signal handler context (ctl-c handler). - - - - - 972b07ec by Duncan Coutts at 2026-03-22T14:52:23+00:00 Update ticker header commentary It was antique and didn't apply even to the previous implementation, and certainly not to the updated one. - - - - - c81a29c1 by Duncan Coutts at 2026-03-22T14:54:00+00:00 Remove the timerfd-based ticker implementation There does not appear to be any remaining advantage on Linux to using the timerfd ticker implementation over the portable one (using ppoll on Linux for precise timing). The eventfd implementation was originally added at a time when Linux was still using a signal based implementation. So it made sense at the time. See (closed) issue #10840. - - - - - c5e86753 by Duncan Coutts at 2026-03-22T14:55:37+00:00 Consolodate to a single posix ticker implementation Previously we had four implementations, two using signals and two using threads. Having just one should make behaviour more consistent between platforms, and should make maintenance easier. - - - - - 302 changed files: - .gitlab/ci.sh - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - libraries/base/src/Control/Applicative.hs - libraries/base/src/Data/Char.hs - libraries/base/src/Data/Eq.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Prelude.hs - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Function.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/Functor/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Data/IORef.hs - libraries/ghc-internal/src/GHC/Internal/Data/List.hs - libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/OldList.hs - libraries/ghc-internal/src/GHC/Internal/Data/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Proxy.hs - libraries/ghc-internal/src/GHC/Internal/Data/STRef.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/String.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Bool.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Coercion.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Equality.hs - libraries/ghc-internal/src/GHC/Internal/Data/Type/Ord.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Unique.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs - libraries/ghc-internal/src/GHC/Internal/Debug/Trace.hs-boot - libraries/ghc-internal/src/GHC/Internal/Encoding/UTF8.hs - libraries/ghc-internal/src/GHC/Internal/Enum.hs - libraries/ghc-internal/src/GHC/Internal/Environment.hs - libraries/ghc-internal/src/GHC/Internal/Event/Array.hs - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Event/EPoll.hsc - libraries/ghc-internal/src/GHC/Internal/Event/IntVar.hs - libraries/ghc-internal/src/GHC/Internal/Event/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Event/Internal/Types.hs - libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Manager.hs - libraries/ghc-internal/src/GHC/Internal/Event/PSQ.hs - libraries/ghc-internal/src/GHC/Internal/Event/Poll.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Thread.hs - libraries/ghc-internal/src/GHC/Internal/Event/TimeOut.hs - libraries/ghc-internal/src/GHC/Internal/Event/TimerManager.hs - libraries/ghc-internal/src/GHC/Internal/Event/Unique.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/Clock.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ConsoleEvent.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/FFI.hsc - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows/Thread.hs - libraries/ghc-internal/src/GHC/Internal/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs-boot - libraries/ghc-internal/src/GHC/Internal/Exception/Context.hs - libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs - libraries/ghc-internal/src/GHC/Internal/ExecutionStack.hs - libraries/ghc-internal/src/GHC/Internal/ExecutionStack/Internal.hsc - libraries/ghc-internal/src/GHC/Internal/Exts.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs-boot - libraries/ghc-internal/src/GHC/Internal/Fingerprint/Type.hs - libraries/ghc-internal/src/GHC/Internal/Float.hs - libraries/ghc-internal/src/GHC/Internal/Float/ConversionUtils.hs - libraries/ghc-internal/src/GHC/Internal/Float/RealFracMethods.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/ConstPtr.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/Error.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/String.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/String/Encoding.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/C/Types.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/ForeignPtr/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Alloc.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Array.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Error.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Pool.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Marshal/Utils.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Ptr.hs - libraries/ghc-internal/src/GHC/Internal/Foreign/Storable.hs - libraries/ghc-internal/src/GHC/Internal/ForeignPtr.hs - libraries/ghc-internal/src/GHC/Internal/ForeignSrcLang.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/GHCi.hs - libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/Heap/Closures.hs - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTable/Types.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/InfoTableProf.hsc - libraries/ghc-internal/src/GHC/Internal/Heap/ProfInfo/Types.hs - libraries/ghc-internal/src/GHC/Internal/IO.hs - libraries/ghc-internal/src/GHC/Internal/IO/Buffer.hs - libraries/ghc-internal/src/GHC/Internal/IO/BufferedIO.hs - libraries/ghc-internal/src/GHC/Internal/IO/Device.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage/API.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/CodePage/Table.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Failure.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Iconv.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Latin1.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/Types.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF16.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF32.hs - libraries/ghc-internal/src/GHC/Internal/IO/Encoding/UTF8.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs-boot - libraries/ghc-internal/src/GHC/Internal/IO/FD.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/FD.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Internals.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/Flock.hsc - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/LinuxOFD.hsc - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/NoOp.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock/Windows.hsc - 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/IO/Handle/Windows.hs - libraries/ghc-internal/src/GHC/Internal/IO/IOMode.hs - libraries/ghc-internal/src/GHC/Internal/IO/SubSystem.hs - libraries/ghc-internal/src/GHC/Internal/IO/Unsafe.hs - libraries/ghc-internal/src/GHC/Internal/IO/Windows/Encoding.hs - libraries/ghc-internal/src/GHC/Internal/IO/Windows/Handle.hsc - libraries/ghc-internal/src/GHC/Internal/IOArray.hs - libraries/ghc-internal/src/GHC/Internal/IORef.hs - libraries/ghc-internal/src/GHC/Internal/InfoProv.hs - libraries/ghc-internal/src/GHC/Internal/InfoProv/Types.hsc - libraries/ghc-internal/src/GHC/Internal/Int.hs - libraries/ghc-internal/src/GHC/Internal/IsList.hs - libraries/ghc-internal/src/GHC/Internal/Ix.hs - libraries/ghc-internal/src/GHC/Internal/JS/Foreign/Callback.hs - libraries/ghc-internal/src/GHC/Internal/JS/Prim/Internal.hs - libraries/ghc-internal/src/GHC/Internal/JS/Prim/Internal/Build.hs - libraries/ghc-internal/src/GHC/Internal/LanguageExtensions.hs - libraries/ghc-internal/src/GHC/Internal/Lexeme.hs - libraries/ghc-internal/src/GHC/Internal/List.hs - libraries/ghc-internal/src/GHC/Internal/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Num.hs - libraries/ghc-internal/src/GHC/Internal/Numeric.hs - libraries/ghc-internal/src/GHC/Internal/OverloadedLabels.hs - libraries/ghc-internal/src/GHC/Internal/Pack.hs - libraries/ghc-internal/src/GHC/Internal/Profiling.hs - libraries/ghc-internal/src/GHC/Internal/Ptr.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/Real.hs - libraries/ghc-internal/src/GHC/Internal/ST.hs - libraries/ghc-internal/src/GHC/Internal/STM.hs - libraries/ghc-internal/src/GHC/Internal/STRef.hs - libraries/ghc-internal/src/GHC/Internal/Show.hs - libraries/ghc-internal/src/GHC/Internal/Stable.hs - libraries/ghc-internal/src/GHC/Internal/StableName.hs - libraries/ghc-internal/src/GHC/Internal/Stack.hs - libraries/ghc-internal/src/GHC/Internal/Stack.hs-boot - libraries/ghc-internal/src/GHC/Internal/Stack/Annotation.hs - libraries/ghc-internal/src/GHC/Internal/Stack/CCS.hsc - libraries/ghc-internal/src/GHC/Internal/Stack/CloneStack.hs - libraries/ghc-internal/src/GHC/Internal/Stack/Constants.hsc - libraries/ghc-internal/src/GHC/Internal/Stack/ConstantsProf.hsc - libraries/ghc-internal/src/GHC/Internal/Stack/Decode.hs - libraries/ghc-internal/src/GHC/Internal/StaticPtr.hs - libraries/ghc-internal/src/GHC/Internal/StaticPtr/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Stats.hsc - libraries/ghc-internal/src/GHC/Internal/Storable.hs - libraries/ghc-internal/src/GHC/Internal/System/Environment.hs - libraries/ghc-internal/src/GHC/Internal/System/Environment/Blank.hsc - libraries/ghc-internal/src/GHC/Internal/System/Environment/ExecutablePath.hsc - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - libraries/ghc-internal/src/GHC/Internal/System/IO/Error.hs - libraries/ghc-internal/src/GHC/Internal/System/Mem.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Types.hs - libraries/ghc-internal/src/GHC/Internal/TH/Lib.hs - libraries/ghc-internal/src/GHC/Internal/TH/Lift.hs - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - libraries/ghc-internal/src/GHC/Internal/TH/Syntax.hs - libraries/ghc-internal/src/GHC/Internal/Text/ParserCombinators/ReadP.hs - libraries/ghc-internal/src/GHC/Internal/Text/ParserCombinators/ReadPrec.hs - libraries/ghc-internal/src/GHC/Internal/Text/Read.hs - libraries/ghc-internal/src/GHC/Internal/Text/Read/Lex.hs - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghc-internal/src/GHC/Internal/TypeLits.hs - libraries/ghc-internal/src/GHC/Internal/TypeLits/Internal.hs - libraries/ghc-internal/src/GHC/Internal/TypeNats.hs - libraries/ghc-internal/src/GHC/Internal/TypeNats/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Unicode.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - 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/Unsafe/Coerce.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Conc.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Conc/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Exports.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Flag.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Imports.hs - libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Types.hs - libraries/ghc-internal/src/GHC/Internal/Weak.hs - libraries/ghc-internal/src/GHC/Internal/Weak/Finalize.hs - libraries/ghc-internal/src/GHC/Internal/Windows.hs - libraries/ghc-internal/src/GHC/Internal/Word.hs - libraries/ghc-internal/tools/ucd2haskell/exe/UCD2Haskell/ModuleGenerators.hs - libraries/ghci/GHCi/CreateBCO.hs - − m4/fp_check_timer_create.m4 - rts/Timer.c - rts/configure.ac - rts/include/rts/Timer.h - rts/include/stg/SMP.h - + rts/posix/FdWakeup.c - + rts/posix/FdWakeup.h - rts/posix/Signals.c - rts/posix/Signals.h - rts/posix/Ticker.c - − rts/posix/ticker/Pthread.c - − rts/posix/ticker/Setitimer.c - − rts/posix/ticker/TimerCreate.c - − rts/posix/ticker/TimerFd.c - rts/rts.cabal - testsuite/tests/ghci/prog-mhu005/Makefile - testsuite/tests/ghci/prog-mhu005/all.T - + testsuite/tests/ghci/prog-mhu005/prog-mhu005b.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005b.stdout - + testsuite/tests/ghci/prog-mhu005/prog-mhu005c.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005c.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005c.stdout - + testsuite/tests/ghci/prog-mhu005/prog-mhu005d.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005d.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005d.stdout - + testsuite/tests/ghci/prog-mhu005/prog-mhu005e.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005e.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005e.stdout - + testsuite/tests/ghci/prog-mhu005/prog-mhu005f.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005f.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005f.stdout - + testsuite/tests/ghci/prog-mhu005/prog-mhu005g.script - + testsuite/tests/ghci/prog-mhu005/prog-mhu005g.stderr - + testsuite/tests/ghci/prog-mhu005/prog-mhu005g.stdout - testsuite/tests/ghci/prog022/Makefile - testsuite/tests/ghci/prog022/all.T - + testsuite/tests/ghci/prog022/ghci.prog022c.script - + testsuite/tests/ghci/prog022/ghci.prog022c.stderr - + testsuite/tests/ghci/prog022/ghci.prog022c.stdout - + testsuite/tests/ghci/prog022/ghci.prog022d.script - + testsuite/tests/ghci/prog022/ghci.prog022d.stderr - + testsuite/tests/ghci/prog022/ghci.prog022d.stdout - + testsuite/tests/ghci/prog022/ghci.prog022e.script - + testsuite/tests/ghci/prog022/ghci.prog022e.stderr - + testsuite/tests/ghci/prog022/ghci.prog022e.stdout - + testsuite/tests/ghci/prog022/ghci.prog022f.script - + testsuite/tests/ghci/prog022/ghci.prog022f.stderr - + testsuite/tests/ghci/prog022/ghci.prog022f.stdout - testsuite/tests/interface-stability/template-haskell-exports.stdout - testsuite/tests/perf/size/all.T - testsuite/tests/profiling/should_run/callstack001.stdout - testsuite/tests/profiling/should_run/callstack002.stderr - testsuite/tests/profiling/should_run/callstack002.stdout The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d95a36c7a929529cb356ad0c2fa7d1… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d95a36c7a929529cb356ad0c2fa7d1… 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 near top of module graph
by Teo Camarasu (＠teo) 22 Mar '26

22 Mar '26

Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: 9d3679bc by Teo Camarasu at 2026-03-22T14:49:12+00:00 ghc-internal: Float Generics to near 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 - - - - - 23 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/Event/Control.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/RTS/Flags.hsc - 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/9d3679bc3f452c66791e2065f0e6669… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9d3679bc3f452c66791e2065f0e6669… 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 near top of module graph
by Teo Camarasu (＠teo) 22 Mar '26

22 Mar '26

Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: 837849ac by Teo Camarasu at 2026-03-22T14:47:47+00:00 ghc-internal: Float Generics to near 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 - - - - - 24 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/Conc/IO.hs - 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/Event/Control.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/RTS/Flags.hsc - 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/837849ac82c1b8fefd61ce0ff1ce3c1… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/837849ac82c1b8fefd61ce0ff1ce3c1… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/supersven/libDir-setting] 34 commits: Configure: Fix check for --target support in stage0 CC
by Sven Tennie (＠supersven) 22 Mar '26

22 Mar '26

Sven Tennie pushed to branch wip/supersven/libDir-setting at Glasgow Haskell Compiler / GHC Commits: 43638643 by Andreas Klebinger at 2026-03-15T18:15:48-04:00 Configure: Fix check for --target support in stage0 CC The check FP_PROG_CC_LINKER_TARGET used $CC unconditionally to check for --target support. However this fails for the stage0 config where the C compiler used is not $CC but $CC_STAGE0. Since we already pass the compiler under test into the macro I simply changed it to use that instead. Fixes #26999 - - - - - 18fd0df6 by Simon Hengel at 2026-03-15T18:16:33-04:00 Fix typo in recursive_do.rst - - - - - 86bd9bfc by fendor at 2026-03-17T23:46:09-04:00 Introduce `-fimport-loaded-targets` GHCi flag This new flag automatically adds all loaded targets to the GHCi session by adding an `InteractiveImport` for the loaded targets. By default, this flag is disabled, as it potentially increases memory-usage. This interacts with the flag `-fno-load-initial-targets` as follows: * If no module is loaded, no module is added as an interactive import. * If a reload loads up to a module, all loaded modules are added as interactive imports. * Unloading modules removes them from the interactive context. Fixes #26866 by rendering the use of a `-ghci-script` to achieve the same thing redundant. - - - - - e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Remove GHC.Internal.Data.Eq It served no purpose other than being a re-export. - - - - - 6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Refine GHC.Internal.Base imports Removed re-exports from GHC.Internal.Base. This reveals some modules that don't actually use anything *defined* in GHC.Internal.Base, and that can be pushed down a little in the import graph. Replaced most imports of GHC.Internal.Base with non-wildcard imports from modules where the identifiers are actually defined. Part of #26834 Metric Decrease: T5321FD - - - - - 7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00 ci: clone, don't copy when creating the cabal cache Also removed WINDOWS_HOST variable detected via uname - we now just check whether the CI job has windows in its name. This works because we only ever care about it if the respective job is not a cross job. We also statically detect darwin cross jobs in the same way. We only ever have darwin -> darwin cross jobs so this is enough to detect the host reliably. - - - - - f8817879 by mangoiv at 2026-03-17T23:48:44-04:00 ci: mark size_hello_artifact fragile on darwin x86 The size of the x86_64 hello artifact is not stable which results in flaky testruns. Resolves #26814 - - - - - e34cb6da by Adam Gundry at 2026-03-20T12:20:00-04:00 ghci: Mention active language edition in startup banner Per GHC proposal 632, this makes the GHCi startup banner include the active language edition, plus an indication of whether this was the default (as opposed to being explicitly selected via an option such as `-XGHC2024`). For example: ``` $ ghci GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help Using default language edition: GHC2024 ghci> ``` Fixes #26037. - - - - - 52c3e6ba by sheaf at 2026-03-20T12:21:09-04:00 Improve incomplete record selector warnings This commit stops GHC from emitting spurious incomplete record selector warnings for bare selectors/projections such as .fld There are two places we currently emit incomplete record selector warnings: 1. In the desugarer, when we see a record selector or an occurrence of 'getField'. Here, we can use pattern matching information to ensure we don't give false positives. 2. In the typechecker, which might sometimes give false positives but can emit warnings in cases that the pattern match checker would otherwise miss. This is explained in Note [Detecting incomplete record selectors] in GHC.HsToCore.Pmc. Now, we obviously don't want to emit the same error twice, and generally we prefer (1), as those messages contain fewer false positives. So we suppress (2) when we are sure we are going to emit (1); the logic for doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel, and works by looking at the CtOrigin. Now, the issue was that this logic handled explicit record selectors as well as overloaded record field selectors such as "x.r" (which turns into a simple GetFieldOrigin CtOrigin), but it didn't properly handle record projectors like ".fld" or ".fld1.fld2" (which result in other CtOrigins such as 'RecordFieldProjectionOrigin'). To solve this problem, we re-use the 'isHasFieldOrigin' introduced in fbdc623a (slightly adjusted). On the way, we also had to update the desugarer with special handling for the 'ExpandedThingTc' case in 'ds_app', to make sure that 'ds_app_var' sees all the type arguments to 'getField' in order for it to indeed emit warnings like in (1). Fixes #26686 - - - - - 309d7e87 by Cheng Shao at 2026-03-20T12:21:53-04:00 rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray# Following !15234, this patch improves `resizeMutableByteArray#` memory efficiency by growing the `MutableByteArray#` in-place if possible, addressing an old todo comment here. Also adds a new test case `resizeMutableByteArrayInPlace` that stresses this behavior. - - - - - 7d4ef162 by Matthew Craven at 2026-03-20T12:22:47-04:00 Change representation of floating point literals This commit changes the representation of floating point literals throughough the compiler, in particular in Core and Cmm. The Rational type is deficient for this purpose, dealing poorly with NaN, +/-Infinity, and negative zero. Instead, the new module GHC.Types.Literal.Floating uses the host Float/Double type to represent NaNs, infinities and negative zero. It also contains a Rational constructor, for the benefit of -fexcess-precision. Other changes: - Remove Note [negative zero] and related code This also removes the restrictions on constant-folding of division by zero, and should make any problems with NaN/Infinity more obvious. - Use -0.0 as the additive identity for Core constant folding rules for floating-point addition, fixing #21227. - Manual worker-wrapper for GHC.Float.rationalToDouble. This is intended to prevent the compiler's WW on this function from interfering with constant-folding. This change means that we now avoid allocating a box for the result of a 'realToFrac' call in T10359. - Combine floatDecodeOp and doubleDecodeOp. This change also fixes a bug in doubleDecodeOp wherein it would incorrectly produce an Int# instead of an Int64# literal for the mantissa component with 64-bit targets. - Use Float/Double for assembly immediates, and update the X86 and PowerPC backends to properly handle special values such as NaN and infinity. - Allow 'rational_to' to handle zero denominators, fixing a TODO in GHC.Core.Opt.ConstantFold. Fixes #8364 #9811 #18897 #21227 Progress towards #26919 Metric Decrease: T10359 Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> ------------------------- Metric Decrease: T1969 T5321FD ------------------------- - - - - - 80e2dd4f by Zubin Duggal at 2026-03-20T12:23:33-04:00 compiler/ffi: Collapse void pointer chains in capi wrappers New gcc/clang treat -Wincompatible-pointer-types as an error by default. Since C only allows implicit conversion from void*, not void**, capi wrappers for functions taking e.g. abstract** would fail to compile when the Haskell type Ptr (Ptr Abstract) was naively translated to void**. Collapse nested void pointers to a single void* when the pointee type has no known C representation. Fixes #26852 - - - - - 1c50bd7b by Luite Stegeman at 2026-03-20T12:24:37-04:00 Move some functions related to pointer tagging to a separate module - - - - - bfd7aafd by Luite Stegeman at 2026-03-20T12:24:37-04:00 Branchless unpacking for enumeration types Change unpacking for enumeration types to go to Word8#/Word16#/Word# directly instead of going through an intermediate unboxed sum. This allows us to do a branchless conversion using DataToTag and TagToEnum. Fixes #26970 - - - - - 72b20fc0 by Luite Stegeman at 2026-03-20T12:25:30-04:00 bytecode: Carefully SLIDE off the end of a stack chunk The SLIDE bytecode instruction was not checking for stack chunk boundaries and could corrupt the stack underflow frame, leading to crashes. We add a check to use safe writes if we cross the chunk boundary and also handle stack underflow if Sp is advanced past the underflow frame. fix #27001 - - - - - 2e22b43c by Cheng Shao at 2026-03-20T12:26:14-04:00 ghci: serialize BCOByteArray buffer directly when possible This patch changes the `Binary` instances of `BCOByteArray` to directly serialize the underlying buffer when possible, while also taking into account the issue of host-dependent `Word` width. See added comments and amended `Note [BCOByteArray serialization]` for detailed explanation. Closes #27020. - - - - - 89d9ba37 by Sylvain Henry at 2026-03-20T12:27:34-04:00 JS: replace BigInt with Number arithmetic for 32/64-bit quot/rem (#23597) Replace BigInt-based implementations of quotWord32, remWord32, quotRemWord32, quotRem2Word32, quotWord64, remWord64, quotInt64, and remInt64 with pure Number (double/integer) arithmetic to avoid the overhead of BigInt promotion. - - - - - ae4ddd60 by Sylvain Henry at 2026-03-20T12:28:28-04:00 Core: add constant-folding rules for Addr# eq/ne (#18032) - - - - - 3e767f98 by Matthew Pickering at 2026-03-20T12:29:11-04:00 Use OsPath rather than FilePath in Downsweep cache This gets us one step closure to uniformly using `OsPath` in the compiler. - - - - - 2c57de29 by Cheng Shao at 2026-03-20T12:29:55-04:00 hadrian: fix ghc-in-ghci flavour stage0 shared libraries This patch fixes missing stage0 shared libraries in hadrian ghc-in-ghci flavour, which was accidentally dropped in 669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression in HLS support on linux/macos. Fixes #27057. - - - - - 5b1be555 by Sylvain Henry at 2026-03-20T12:30:48-04:00 JS: install rts/Types.h header file (#27033) It was an omission, making HsFFI.h not usable with GHC using the JS backend. - - - - - b883f08f by Cheng Shao at 2026-03-20T12:31:33-04:00 hadrian: don't compile RTS with -Winline This patch removes `-Winline` from cflags when compiling the RTS, given that: 1. It generates a huge pile of spam and hurts developer experience 2. Whether inlining happens is highly dependent on toolchains, flavours, etc, and it's not really an issue to fix if inlining doesn't happen; it's a hint to the C compiler anyway. Fixes #27060. - - - - - 333387d6 by Cheng Shao at 2026-03-20T12:31:33-04:00 hadrian: compile libffi-clib with -Wno-deprecated-declarations This patch adds `-Wno-deprecated-declarations` to cflags of `libffi-clib`, given that it produces noise at compile-time that aren't really our issue to fix anyway, it's from vendored libffi source code. - - - - - 67c47771 by Rodrigo Mesquita at 2026-03-20T12:32:17-04:00 Expose decodeStackWithIpe from ghc-experimental This decoding is useful to the debugger and it wasn't originally exported as an oversight. - - - - - 18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00 Add support for custom external interpreter commands It can be useful for GHC API clients to implement their own external interpreter commands. For example, the debugger may want an efficient way to inspect the stacks of the running threads in the external interpreter. - - - - - 4636d906 by mangoiv at 2026-03-21T04:44:10-04:00 ci: remove obsolete fallback for old debian and ubuntu versions - - - - - 2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00 ci: drop ubuntu 18 and 20 Ubuntu 18 EOL: May 2023 Ubuntu 20 EOL: May 2025 We should probably not make another major release supporting these platforms. Also updates the generator script. Resolves #25876 - - - - - de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00 rts: fix -Wcompare-distinct-pointer-types errors This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. - - - - - b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00 ghc-internal: fix unused imports This commit fixes unused imports in `ghc-internal` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00 ghci: fix unused imports This commit fixes unused imports in `ghci` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - 955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00 compiler: fix unused imports in GHC.Tc.Types.Origin This commit fixes unused imports in `GHC.Tc.Types.Origin` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #27059. - - - - - 3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00 hadrian: fix missing +werror in validate flavour This patch fixes missing `+werror` in validate flavour, which was an oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066. - - - - - 44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00 ci: bump CACHE_REV and add the missing reminder This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI errors due to stale cabal cache on some runners, and also adds a reminder to remind future maintainers. Fixes #27075. - - - - - f6bdd8bf by Sven Tennie at 2026-03-22T13:00:05+00:00 Add config setting for LibDir Previously, the libDir was derived from topDir. This won't work for inplace stage2 cross-compilers where binaries and libraries are in different stage dirs (`_build/stage1/` for executables and `_build/stage2` for libraries). - - - - - 409 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - .gitlab/generate-ci/flake.lock - .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/Names.hs - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/Cmm/CommonBlockElim.hs - compiler/GHC/Cmm/Expr.hs - compiler/GHC/Cmm/Opt.hs - compiler/GHC/Cmm/Parser.y - compiler/GHC/Cmm/Type.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.hs - compiler/GHC/CmmToAsm/AArch64/Ppr.hs - compiler/GHC/CmmToAsm/AArch64/Regs.hs - compiler/GHC/CmmToAsm/LA64/CodeGen.hs - compiler/GHC/CmmToAsm/LA64/Ppr.hs - compiler/GHC/CmmToAsm/LA64/Regs.hs - compiler/GHC/CmmToAsm/PPC/CodeGen.hs - compiler/GHC/CmmToAsm/PPC/Ppr.hs - compiler/GHC/CmmToAsm/PPC/Regs.hs - compiler/GHC/CmmToAsm/RV64/CodeGen.hs - compiler/GHC/CmmToAsm/RV64/Ppr.hs - compiler/GHC/CmmToAsm/RV64/Regs.hs - compiler/GHC/CmmToAsm/Wasm/FromCmm.hs - compiler/GHC/CmmToAsm/X86/CodeGen.hs - compiler/GHC/CmmToAsm/X86/Ppr.hs - compiler/GHC/CmmToAsm/X86/Regs.hs - compiler/GHC/CmmToC.hs - compiler/GHC/CmmToLlvm/CodeGen.hs - compiler/GHC/CmmToLlvm/Data.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Driver/Config/Interpreter.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/Driver/DynFlags.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/C.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - + compiler/GHC/Platform/Tag.hs - compiler/GHC/Settings.hs - compiler/GHC/Settings/IO.hs - compiler/GHC/Stg/Unarise.hs - compiler/GHC/StgToByteCode.hs - compiler/GHC/StgToCmm/Closure.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/StgToCmm/Lit.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Literal.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/TyCl/Build.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Types/Id/Make.hs - compiler/GHC/Types/Literal.hs - + compiler/GHC/Types/Literal/Floating.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Utils/Binary.hs - compiler/ghc.cabal.in - docs/users_guide/9.16.1-notes.rst - docs/users_guide/exts/recursive_do.rst - docs/users_guide/ghci.rst - docs/users_guide/utils.py - ghc/GHCi/UI.hs - ghc/Main.hs - hadrian/bindist/Makefile - hadrian/cabal.project - hadrian/src/Rules/Generate.hs - hadrian/src/Settings/Flavours/GhcInGhci.hs - hadrian/src/Settings/Flavours/Validate.hs - hadrian/src/Settings/Packages.hs - libraries/base/src/Control/Applicative.hs - libraries/base/src/Data/Char.hs - libraries/base/src/Data/Eq.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Prelude.hs - libraries/ghc-experimental/ghc-experimental.cabal.in - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - + libraries/ghc-experimental/src/GHC/Stack/Decode/Experimental.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs - 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+ testsuite/tests/simplStg/should_run/unpack_enum.stdout The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/647bf2de83be22a89cf4b11b25ddf3… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/647bf2de83be22a89cf4b11b25ddf3… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26930] 10 commits: Add support for custom external interpreter commands
by Teo Camarasu (＠teo) 22 Mar '26

22 Mar '26

Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: 18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00 Add support for custom external interpreter commands It can be useful for GHC API clients to implement their own external interpreter commands. For example, the debugger may want an efficient way to inspect the stacks of the running threads in the external interpreter. - - - - - 4636d906 by mangoiv at 2026-03-21T04:44:10-04:00 ci: remove obsolete fallback for old debian and ubuntu versions - - - - - 2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00 ci: drop ubuntu 18 and 20 Ubuntu 18 EOL: May 2023 Ubuntu 20 EOL: May 2025 We should probably not make another major release supporting these platforms. Also updates the generator script. Resolves #25876 - - - - - de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00 rts: fix -Wcompare-distinct-pointer-types errors This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. - - - - - b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00 ghc-internal: fix unused imports This commit fixes unused imports in `ghc-internal` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00 ghci: fix unused imports This commit fixes unused imports in `ghci` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - 955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00 compiler: fix unused imports in GHC.Tc.Types.Origin This commit fixes unused imports in `GHC.Tc.Types.Origin` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #27059. - - - - - 3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00 hadrian: fix missing +werror in validate flavour This patch fixes missing `+werror` in validate flavour, which was an oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066. - - - - - 44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00 ci: bump CACHE_REV and add the missing reminder This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI errors due to stale cabal cache on some runners, and also adds a reminder to remind future maintainers. Fixes #27075. - - - - - 4e96765c by Teo Camarasu at 2026-03-22T12:27:57+00:00 ghc-internal: Float Generics to near 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 - - - - - 52 changed files: - .gitlab-ci.yml - .gitlab/generate-ci/flake.lock - .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/Tc/Types/Origin.hs - docs/users_guide/utils.py - hadrian/cabal.project - hadrian/src/Settings/Flavours/Validate.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - 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/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc - libraries/ghc-internal/src/GHC/Internal/Float.hs - libraries/ghc-internal/src/GHC/Internal/Float/RealFracMethods.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/IO/FD.hs - libraries/ghc-internal/src/GHC/Internal/Int.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/System/Environment.hs - libraries/ghc-internal/src/GHC/Internal/System/Environment/Blank.hsc - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - libraries/ghci/GHCi/Message.hs - libraries/ghci/GHCi/Run.hs - libraries/ghci/GHCi/Server.hs - rts/Interpreter.c - + testsuite/tests/ghci/custom-external-interpreter-commands/Main.hs - + testsuite/tests/ghci/custom-external-interpreter-commands/all.T - + testsuite/tests/ghci/custom-external-interpreter-commands/custom-external-interpreter-commands.stdout - 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/-/compare/98f38fe35408529c5803dc4d28b3a0… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/98f38fe35408529c5803dc4d28b3a0… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T13729] 32 commits: Introduce `-fimport-loaded-targets` GHCi flag
by Simon Jakobi (＠sjakobi2) 22 Mar '26

22 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T13729 at Glasgow Haskell Compiler / GHC Commits: 86bd9bfc by fendor at 2026-03-17T23:46:09-04:00 Introduce `-fimport-loaded-targets` GHCi flag This new flag automatically adds all loaded targets to the GHCi session by adding an `InteractiveImport` for the loaded targets. By default, this flag is disabled, as it potentially increases memory-usage. This interacts with the flag `-fno-load-initial-targets` as follows: * If no module is loaded, no module is added as an interactive import. * If a reload loads up to a module, all loaded modules are added as interactive imports. * Unloading modules removes them from the interactive context. Fixes #26866 by rendering the use of a `-ghci-script` to achieve the same thing redundant. - - - - - e3d4c1bb by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Remove GHC.Internal.Data.Eq It served no purpose other than being a re-export. - - - - - 6f4f6cf0 by mniip at 2026-03-17T23:47:03-04:00 ghc-internal: Refine GHC.Internal.Base imports Removed re-exports from GHC.Internal.Base. This reveals some modules that don't actually use anything *defined* in GHC.Internal.Base, and that can be pushed down a little in the import graph. Replaced most imports of GHC.Internal.Base with non-wildcard imports from modules where the identifiers are actually defined. Part of #26834 Metric Decrease: T5321FD - - - - - 7fb51f54 by mangoiv at 2026-03-17T23:48:00-04:00 ci: clone, don't copy when creating the cabal cache Also removed WINDOWS_HOST variable detected via uname - we now just check whether the CI job has windows in its name. This works because we only ever care about it if the respective job is not a cross job. We also statically detect darwin cross jobs in the same way. We only ever have darwin -> darwin cross jobs so this is enough to detect the host reliably. - - - - - f8817879 by mangoiv at 2026-03-17T23:48:44-04:00 ci: mark size_hello_artifact fragile on darwin x86 The size of the x86_64 hello artifact is not stable which results in flaky testruns. Resolves #26814 - - - - - e34cb6da by Adam Gundry at 2026-03-20T12:20:00-04:00 ghci: Mention active language edition in startup banner Per GHC proposal 632, this makes the GHCi startup banner include the active language edition, plus an indication of whether this was the default (as opposed to being explicitly selected via an option such as `-XGHC2024`). For example: ``` $ ghci GHCi, version 9.14.1: https://www.haskell.org/ghc/ :? for help Using default language edition: GHC2024 ghci> ``` Fixes #26037. - - - - - 52c3e6ba by sheaf at 2026-03-20T12:21:09-04:00 Improve incomplete record selector warnings This commit stops GHC from emitting spurious incomplete record selector warnings for bare selectors/projections such as .fld There are two places we currently emit incomplete record selector warnings: 1. In the desugarer, when we see a record selector or an occurrence of 'getField'. Here, we can use pattern matching information to ensure we don't give false positives. 2. In the typechecker, which might sometimes give false positives but can emit warnings in cases that the pattern match checker would otherwise miss. This is explained in Note [Detecting incomplete record selectors] in GHC.HsToCore.Pmc. Now, we obviously don't want to emit the same error twice, and generally we prefer (1), as those messages contain fewer false positives. So we suppress (2) when we are sure we are going to emit (1); the logic for doing so is in GHC.Tc.Instance.Class.warnIncompleteRecSel, and works by looking at the CtOrigin. Now, the issue was that this logic handled explicit record selectors as well as overloaded record field selectors such as "x.r" (which turns into a simple GetFieldOrigin CtOrigin), but it didn't properly handle record projectors like ".fld" or ".fld1.fld2" (which result in other CtOrigins such as 'RecordFieldProjectionOrigin'). To solve this problem, we re-use the 'isHasFieldOrigin' introduced in fbdc623a (slightly adjusted). On the way, we also had to update the desugarer with special handling for the 'ExpandedThingTc' case in 'ds_app', to make sure that 'ds_app_var' sees all the type arguments to 'getField' in order for it to indeed emit warnings like in (1). Fixes #26686 - - - - - 309d7e87 by Cheng Shao at 2026-03-20T12:21:53-04:00 rts: opportunistically grow the MutableByteArray# in-place in resizeMutableByteArray# Following !15234, this patch improves `resizeMutableByteArray#` memory efficiency by growing the `MutableByteArray#` in-place if possible, addressing an old todo comment here. Also adds a new test case `resizeMutableByteArrayInPlace` that stresses this behavior. - - - - - 7d4ef162 by Matthew Craven at 2026-03-20T12:22:47-04:00 Change representation of floating point literals This commit changes the representation of floating point literals throughough the compiler, in particular in Core and Cmm. The Rational type is deficient for this purpose, dealing poorly with NaN, +/-Infinity, and negative zero. Instead, the new module GHC.Types.Literal.Floating uses the host Float/Double type to represent NaNs, infinities and negative zero. It also contains a Rational constructor, for the benefit of -fexcess-precision. Other changes: - Remove Note [negative zero] and related code This also removes the restrictions on constant-folding of division by zero, and should make any problems with NaN/Infinity more obvious. - Use -0.0 as the additive identity for Core constant folding rules for floating-point addition, fixing #21227. - Manual worker-wrapper for GHC.Float.rationalToDouble. This is intended to prevent the compiler's WW on this function from interfering with constant-folding. This change means that we now avoid allocating a box for the result of a 'realToFrac' call in T10359. - Combine floatDecodeOp and doubleDecodeOp. This change also fixes a bug in doubleDecodeOp wherein it would incorrectly produce an Int# instead of an Int64# literal for the mantissa component with 64-bit targets. - Use Float/Double for assembly immediates, and update the X86 and PowerPC backends to properly handle special values such as NaN and infinity. - Allow 'rational_to' to handle zero denominators, fixing a TODO in GHC.Core.Opt.ConstantFold. Fixes #8364 #9811 #18897 #21227 Progress towards #26919 Metric Decrease: T10359 Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> ------------------------- Metric Decrease: T1969 T5321FD ------------------------- - - - - - 80e2dd4f by Zubin Duggal at 2026-03-20T12:23:33-04:00 compiler/ffi: Collapse void pointer chains in capi wrappers New gcc/clang treat -Wincompatible-pointer-types as an error by default. Since C only allows implicit conversion from void*, not void**, capi wrappers for functions taking e.g. abstract** would fail to compile when the Haskell type Ptr (Ptr Abstract) was naively translated to void**. Collapse nested void pointers to a single void* when the pointee type has no known C representation. Fixes #26852 - - - - - 1c50bd7b by Luite Stegeman at 2026-03-20T12:24:37-04:00 Move some functions related to pointer tagging to a separate module - - - - - bfd7aafd by Luite Stegeman at 2026-03-20T12:24:37-04:00 Branchless unpacking for enumeration types Change unpacking for enumeration types to go to Word8#/Word16#/Word# directly instead of going through an intermediate unboxed sum. This allows us to do a branchless conversion using DataToTag and TagToEnum. Fixes #26970 - - - - - 72b20fc0 by Luite Stegeman at 2026-03-20T12:25:30-04:00 bytecode: Carefully SLIDE off the end of a stack chunk The SLIDE bytecode instruction was not checking for stack chunk boundaries and could corrupt the stack underflow frame, leading to crashes. We add a check to use safe writes if we cross the chunk boundary and also handle stack underflow if Sp is advanced past the underflow frame. fix #27001 - - - - - 2e22b43c by Cheng Shao at 2026-03-20T12:26:14-04:00 ghci: serialize BCOByteArray buffer directly when possible This patch changes the `Binary` instances of `BCOByteArray` to directly serialize the underlying buffer when possible, while also taking into account the issue of host-dependent `Word` width. See added comments and amended `Note [BCOByteArray serialization]` for detailed explanation. Closes #27020. - - - - - 89d9ba37 by Sylvain Henry at 2026-03-20T12:27:34-04:00 JS: replace BigInt with Number arithmetic for 32/64-bit quot/rem (#23597) Replace BigInt-based implementations of quotWord32, remWord32, quotRemWord32, quotRem2Word32, quotWord64, remWord64, quotInt64, and remInt64 with pure Number (double/integer) arithmetic to avoid the overhead of BigInt promotion. - - - - - ae4ddd60 by Sylvain Henry at 2026-03-20T12:28:28-04:00 Core: add constant-folding rules for Addr# eq/ne (#18032) - - - - - 3e767f98 by Matthew Pickering at 2026-03-20T12:29:11-04:00 Use OsPath rather than FilePath in Downsweep cache This gets us one step closure to uniformly using `OsPath` in the compiler. - - - - - 2c57de29 by Cheng Shao at 2026-03-20T12:29:55-04:00 hadrian: fix ghc-in-ghci flavour stage0 shared libraries This patch fixes missing stage0 shared libraries in hadrian ghc-in-ghci flavour, which was accidentally dropped in 669d09f950a6e88b903d9fd8a7571531774d4d5d and resulted in a regression in HLS support on linux/macos. Fixes #27057. - - - - - 5b1be555 by Sylvain Henry at 2026-03-20T12:30:48-04:00 JS: install rts/Types.h header file (#27033) It was an omission, making HsFFI.h not usable with GHC using the JS backend. - - - - - b883f08f by Cheng Shao at 2026-03-20T12:31:33-04:00 hadrian: don't compile RTS with -Winline This patch removes `-Winline` from cflags when compiling the RTS, given that: 1. It generates a huge pile of spam and hurts developer experience 2. Whether inlining happens is highly dependent on toolchains, flavours, etc, and it's not really an issue to fix if inlining doesn't happen; it's a hint to the C compiler anyway. Fixes #27060. - - - - - 333387d6 by Cheng Shao at 2026-03-20T12:31:33-04:00 hadrian: compile libffi-clib with -Wno-deprecated-declarations This patch adds `-Wno-deprecated-declarations` to cflags of `libffi-clib`, given that it produces noise at compile-time that aren't really our issue to fix anyway, it's from vendored libffi source code. - - - - - 67c47771 by Rodrigo Mesquita at 2026-03-20T12:32:17-04:00 Expose decodeStackWithIpe from ghc-experimental This decoding is useful to the debugger and it wasn't originally exported as an oversight. - - - - - 18513365 by Matthew Pickering at 2026-03-21T04:43:26-04:00 Add support for custom external interpreter commands It can be useful for GHC API clients to implement their own external interpreter commands. For example, the debugger may want an efficient way to inspect the stacks of the running threads in the external interpreter. - - - - - 4636d906 by mangoiv at 2026-03-21T04:44:10-04:00 ci: remove obsolete fallback for old debian and ubuntu versions - - - - - 2e3a2805 by mangoiv at 2026-03-21T04:44:10-04:00 ci: drop ubuntu 18 and 20 Ubuntu 18 EOL: May 2023 Ubuntu 20 EOL: May 2025 We should probably not make another major release supporting these platforms. Also updates the generator script. Resolves #25876 - - - - - de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00 rts: fix -Wcompare-distinct-pointer-types errors This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. - - - - - b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00 ghc-internal: fix unused imports This commit fixes unused imports in `ghc-internal` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00 ghci: fix unused imports This commit fixes unused imports in `ghci` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - 955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00 compiler: fix unused imports in GHC.Tc.Types.Origin This commit fixes unused imports in `GHC.Tc.Types.Origin` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #27059. - - - - - 3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00 hadrian: fix missing +werror in validate flavour This patch fixes missing `+werror` in validate flavour, which was an oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066. - - - - - 44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00 ci: bump CACHE_REV and add the missing reminder This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI errors due to stale cabal cache on some runners, and also adds a reminder to remind future maintainers. Fixes #27075. - - - - - f49b9561 by Simon Jakobi at 2026-03-22T12:30:12+01:00 Add regression test for #13729 Closes #13729. - - - - - 412 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - .gitlab/generate-ci/flake.lock - .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/Names.hs - compiler/GHC/ByteCode/Asm.hs - compiler/GHC/Cmm/CommonBlockElim.hs - compiler/GHC/Cmm/Expr.hs - compiler/GHC/Cmm/Opt.hs - compiler/GHC/Cmm/Parser.y - compiler/GHC/Cmm/Type.hs - compiler/GHC/Cmm/Utils.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.hs - compiler/GHC/CmmToAsm/AArch64/Ppr.hs - compiler/GHC/CmmToAsm/AArch64/Regs.hs - compiler/GHC/CmmToAsm/LA64/CodeGen.hs - compiler/GHC/CmmToAsm/LA64/Ppr.hs - compiler/GHC/CmmToAsm/LA64/Regs.hs - compiler/GHC/CmmToAsm/PPC/CodeGen.hs - compiler/GHC/CmmToAsm/PPC/Ppr.hs - compiler/GHC/CmmToAsm/PPC/Regs.hs - compiler/GHC/CmmToAsm/RV64/CodeGen.hs - compiler/GHC/CmmToAsm/RV64/Ppr.hs - compiler/GHC/CmmToAsm/RV64/Regs.hs - compiler/GHC/CmmToAsm/Wasm/FromCmm.hs - compiler/GHC/CmmToAsm/X86/CodeGen.hs - compiler/GHC/CmmToAsm/X86/Ppr.hs - compiler/GHC/CmmToAsm/X86/Regs.hs - compiler/GHC/CmmToC.hs - compiler/GHC/CmmToLlvm/CodeGen.hs - compiler/GHC/CmmToLlvm/Data.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Make.hs - compiler/GHC/Core/Opt/ConstantFold.hs - compiler/GHC/Driver/Downsweep.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Foreign/C.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - + compiler/GHC/Platform/Tag.hs - compiler/GHC/Stg/Unarise.hs - compiler/GHC/StgToByteCode.hs - compiler/GHC/StgToCmm/Closure.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/StgToCmm/Lit.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Literal.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/TyCl/Build.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Types/Id/Make.hs - compiler/GHC/Types/Literal.hs - + compiler/GHC/Types/Literal/Floating.hs - compiler/GHC/Types/RepType.hs - compiler/GHC/Utils/Binary.hs - compiler/ghc.cabal.in - docs/users_guide/9.16.1-notes.rst - docs/users_guide/ghci.rst - docs/users_guide/utils.py - ghc/GHCi/UI.hs - ghc/Main.hs - hadrian/cabal.project - hadrian/src/Settings/Flavours/GhcInGhci.hs - hadrian/src/Settings/Flavours/Validate.hs - hadrian/src/Settings/Packages.hs - libraries/base/src/Control/Applicative.hs - libraries/base/src/Data/Char.hs - libraries/base/src/Data/Eq.hs - libraries/base/src/Data/Semigroup.hs - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Weak/Finalize.hs - libraries/base/src/Prelude.hs - libraries/ghc-experimental/ghc-experimental.cabal.in - libraries/ghc-experimental/src/GHC/Profiling/Eras.hs - + libraries/ghc-experimental/src/GHC/Stack/Decode/Experimental.hs - libraries/ghc-internal/codepages/MakeTable.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs - libraries/ghc-internal/src/GHC/Internal/Arr.hs - libraries/ghc-internal/src/GHC/Internal/Base.hs - libraries/ghc-internal/src/GHC/Internal/Bits.hs - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - libraries/ghc-internal/src/GHC/Internal/Char.hs - libraries/ghc-internal/src/GHC/Internal/Clock.hsc - libraries/ghc-internal/src/GHC/Internal/ClosureTypes.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Bound.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Conc/POSIX.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Signal.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs - libraries/ghc-internal/src/GHC/Internal/Conc/Windows.hs - libraries/ghc-internal/src/GHC/Internal/ConsoleHandler.hsc - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Concurrent/MVar.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception.hs - libraries/ghc-internal/src/GHC/Internal/Control/Exception/Base.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/IO/Class.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Bits.hs - libraries/ghc-internal/src/GHC/Internal/Data/Data.hs - libraries/ghc-internal/src/GHC/Internal/Data/Dynamic.hs - libraries/ghc-internal/src/GHC/Internal/Data/Either.hs - − libraries/ghc-internal/src/GHC/Internal/Data/Eq.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Function.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - 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+ testsuite/tests/rts/resizeMutableByteArrayInPlace.hs - + testsuite/tests/simplCore/should_compile/T18032.hs - + testsuite/tests/simplCore/should_compile/T18032.stderr - testsuite/tests/simplCore/should_compile/all.T - testsuite/tests/simplStg/should_run/all.T - + testsuite/tests/simplStg/should_run/unpack_enum.hs - + testsuite/tests/simplStg/should_run/unpack_enum.stdout The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/33eb4560be7d58461c994a8402d177… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/33eb4560be7d58461c994a8402d177… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T18177] Add regression test for #18177
by Simon Jakobi (＠sjakobi2) 22 Mar '26

22 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T18177 at Glasgow Haskell Compiler / GHC Commits: 43d551a2 by Simon Jakobi at 2026-03-22T11:59:12+01:00 Add regression test for #18177 Closes #18177. Assisted-by: Codex - - - - - 2 changed files: - + testsuite/tests/driver/T18177.hs - testsuite/tests/driver/all.T Changes: ===================================== testsuite/tests/driver/T18177.hs ===================================== @@ -0,0 +1 @@ +module T18177 where ===================================== testsuite/tests/driver/all.T ===================================== @@ -314,6 +314,12 @@ test('MultiRootsErr', normal, multimod_compile_fail, ['MultiRootsErr', 'MultiRoo test('patch-level2', normal, compile, ['-Wcpp-undef']) test('T16476a', normal, makefile_test, []) test('T16476b', normal, makefile_test, []) + +# Test that GHC can handle an empty preprocessor response file. +# This used to cause GHC to hang indefinitely: #18177 +test('T18177', [pre_cmd('touch cpp-args')], compile, + ['-v0 -fforce-recomp -fhpc -optP@cpp-args -optP-DX']) + test('T20569', extra_files(["T20569/"]), makefile_test, []) test('T21866', normal, multimod_compile, ['T21866','-no-link']) test('T21349', extra_files(['T21349']), makefile_test, []) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/43d551a235211b600e2a2d3e9e9d7c7… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/43d551a235211b600e2a2d3e9e9d7c7… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] Rebase fixup: staged libraryWays
by Sven Tennie (＠supersven) 22 Mar '26

22 Mar '26

Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC Commits: 385bdab5 by Sven at 2026-03-22T09:42:33+00:00 Rebase fixup: staged libraryWays libraryWays depends on the architecture supporting shared libs. This is stage dependend for cross-compilers (host and target could have different properties). - - - - - 6 changed files: - hadrian/src/Flavour.hs - hadrian/src/Flavour/Type.hs - hadrian/src/Hadrian/Haskell/Hash.hs - hadrian/src/Settings.hs - hadrian/src/Settings/Default.hs - hadrian/src/Settings/Flavours/GhcInGhci.hs Changes: ===================================== hadrian/src/Flavour.hs ===================================== @@ -325,7 +325,7 @@ disableDynamicGhcPrograms flavour = flavour { dynamicGhcPrograms = const (pure F -- | Don't build libraries in dynamic 'Way's. disableDynamicLibs :: Flavour -> Flavour disableDynamicLibs flavour = - flavour { libraryWays = prune $ libraryWays flavour, + flavour { libraryWays = prune . libraryWays flavour, rtsWays = prune $ rtsWays flavour, dynamicGhcPrograms = const (pure False) } @@ -338,7 +338,7 @@ disableDynamicLibs flavour = enableProfiledLibs :: Flavour -> Flavour enableProfiledLibs flavour = flavour - { libraryWays = addProfilingWays $ libraryWays flavour, + { libraryWays = addProfilingWays . libraryWays flavour, rtsWays = addProfilingWays $ rtsWays flavour } where @@ -351,7 +351,7 @@ enableProfiledLibs flavour = -- | Don't build libraries in profiled 'Way's. disableProfiledLibs :: Flavour -> Flavour disableProfiledLibs flavour = - flavour { libraryWays = prune $ libraryWays flavour + flavour { libraryWays = prune . libraryWays flavour , rtsWays = prune $ rtsWays flavour } where @@ -473,9 +473,9 @@ hostFullyStatic flavour = [ notM stage1 ? pure ws, stage1 ? pure (ws `Set.difference` Set.fromList [dynamic, profilingDynamic, threadedDynamic, threadedDebugDynamic, threadedProfilingDynamic, threadedDebugProfilingDynamic, debugDynamic, debugProfilingDynamic]) - ] - , libraryWays = do - ws <- libraryWays f + ] + , libraryWays = \stage -> do + ws <- libraryWays f stage mconcat [ notM stage1 ? pure ws, stage1 ===================================== hadrian/src/Flavour/Type.hs ===================================== @@ -29,7 +29,8 @@ data Flavour = Flavour { textWithSIMDUTF :: Stage -- ^ stage of the /built/ compiler -> Action Bool, -- | Build libraries these ways. - libraryWays :: Ways, + libraryWays :: Stage -- ^ stage of the /built/ compiler + -> Ways, -- | Build RTS these ways. rtsWays :: Ways, -- | Build dynamic GHC programs. ===================================== hadrian/src/Hadrian/Haskell/Hash.hs ===================================== @@ -130,7 +130,7 @@ pkgHashOracle = void $ addOracleCache $ \(PkgHashKey (stag, pkg)) -> do let pkgHashCompilerId = "ghc-" ++ projectVersion pkgHashPlatform = targetOs - libWays <- interpretInContext vanilla_ctx (libraryWays flav) + libWays <- interpretInContext vanilla_ctx (libraryWays flav stag) dyn_ghc <- dynamicGhcPrograms flav stag flags <- interpret (target vanilla_ctx (Cabal Flags stag) [] []) getArgs let pkgHashFlagAssignment = flags ===================================== hadrian/src/Settings.hs ===================================== @@ -38,7 +38,10 @@ getArgs :: Args getArgs = mconcat [ defaultBuilderArgs, defaultPackageArgs, getExtraArgs ] getLibraryWays :: Ways -getLibraryWays = expr flavour >>= libraryWays +getLibraryWays = do + flav <- expr flavour + stage <- getStage + libraryWays flav stage getRtsWays :: Ways getRtsWays = expr flavour >>= rtsWays ===================================== hadrian/src/Settings/Default.hs ===================================== @@ -288,7 +288,7 @@ defaultFlavour = Flavour , bignumBackend = defaultBignumBackend , bignumCheck = False , textWithSIMDUTF = const (return False) - , libraryWays = defaultLibraryWays + , libraryWays = const defaultLibraryWays , rtsWays = defaultRtsWays , dynamicGhcPrograms = defaultDynamicGhcPrograms , ghcProfiled = const False ===================================== hadrian/src/Settings/Flavours/GhcInGhci.hs ===================================== @@ -11,11 +11,11 @@ ghcInGhciFlavour :: Flavour ghcInGhciFlavour = disableProfiledLibs $ defaultFlavour { name = "ghc-in-ghci" , extraArgs = ghciArgs - , libraryWays = + , libraryWays = \stage -> Set.fromList <$> mconcat [ pure [vanilla] - , platformSupportsSharedLibs ? pure [dynamic] + , targetSupportsSharedLibs stage ? pure [dynamic] ] } View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/385bdab509f8440c1608a3648e687b0… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/385bdab509f8440c1608a3648e687b0… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] ci: bump CACHE_REV and add the missing reminder
by Marge Bot (＠marge-bot) 22 Mar '26

22 Mar '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 44f118f0 by Cheng Shao at 2026-03-22T04:54:01-04:00 ci: bump CACHE_REV and add the missing reminder This patch bumps `CACHE_REV` to address recent `[Cabal-7159]` CI errors due to stale cabal cache on some runners, and also adds a reminder to remind future maintainers. Fixes #27075. - - - - - 2 changed files: - .gitlab-ci.yml - hadrian/cabal.project Changes: ===================================== .gitlab-ci.yml ===================================== @@ -15,7 +15,7 @@ variables: # Sequential version number of all cached things. # Bump to invalidate GitLab CI cache. - CACHE_REV: 11 + CACHE_REV: 12 # Disable shallow clones; they break our linting rules GIT_DEPTH: 0 ===================================== hadrian/cabal.project ===================================== @@ -4,6 +4,8 @@ packages: ./ -- This essentially freezes the build plan for hadrian -- It would be wise to keep this up to date with the state set in .gitlab/ci.sh. +-- Also remember to bump CACHE_REV in .gitlab-ci.yml, otherwise stale +-- cabal cache on some runners may result in [Cabal-7159] errors. index-state: 2026-03-10T17:36:36Z -- N.B. Compile with -O0 since this is not a performance-critical executable View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/44f118f09dcde49f64d03e427312df4… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/44f118f09dcde49f64d03e427312df4… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] 5 commits: rts: fix -Wcompare-distinct-pointer-types errors
by Marge Bot (＠marge-bot) 22 Mar '26

22 Mar '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: de54e264 by Cheng Shao at 2026-03-21T17:52:08+01:00 rts: fix -Wcompare-distinct-pointer-types errors This commit fixes `-Wcompare-distinct-pointer-types` errors in the RTS which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. - - - - - b9bd73de by Cheng Shao at 2026-03-21T17:52:08+01:00 ghc-internal: fix unused imports This commit fixes unused imports in `ghc-internal` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - da946a16 by Cheng Shao at 2026-03-21T17:03:51+00:00 ghci: fix unused imports This commit fixes unused imports in `ghci` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #26987 #27059. - - - - - 955b1cf8 by Cheng Shao at 2026-03-21T17:03:51+00:00 compiler: fix unused imports in GHC.Tc.Types.Origin This commit fixes unused imports in `GHC.Tc.Types.Origin` which should have been caught by the `validate` flavour but was warnings in CI due to the recent `+werror` regression. Fixes #27059. - - - - - 3b1aeb50 by Cheng Shao at 2026-03-21T17:03:51+00:00 hadrian: fix missing +werror in validate flavour This patch fixes missing `+werror` in validate flavour, which was an oversight in bb3a2ba1eefadf0b2ef4f39b31337a23eec67f29. Fixes #27066. - - - - - 19 changed files: - compiler/GHC/Tc/Types/Origin.hs - hadrian/src/Settings/Flavours/Validate.hs - libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc - libraries/ghc-internal/src/GHC/Internal/Float.hs - libraries/ghc-internal/src/GHC/Internal/Float/RealFracMethods.hs - libraries/ghc-internal/src/GHC/Internal/IO/FD.hs - libraries/ghc-internal/src/GHC/Internal/Int.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/System/Environment.hs - libraries/ghc-internal/src/GHC/Internal/System/Environment/Blank.hsc - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghci/GHCi/Message.hs - libraries/ghci/GHCi/Server.hs - rts/Interpreter.c Changes: ===================================== compiler/GHC/Tc/Types/Origin.hs ===================================== @@ -83,7 +83,6 @@ import qualified Data.Kind as Hs import Data.List.NonEmpty (NonEmpty (..)) import Data.Maybe (isNothing) import qualified Data.Semigroup as Semi -import GHC.Generics {- ********************************************************************* * * ===================================== hadrian/src/Settings/Flavours/Validate.hs ===================================== @@ -8,7 +8,7 @@ import {-# SOURCE #-} Settings.Default -- Please update doc/flavours.md when changing this file. validateFlavour :: Flavour -validateFlavour = enableLinting $ quickValidateFlavour +validateFlavour = enableLinting $ werror $ quickValidateFlavour { name = "validate" , extraArgs = validateArgs <> defaultHaddockExtraArgs , ghcDebugAssertions = (<= Stage1) ===================================== libraries/ghc-internal/src/GHC/Internal/Conc/IO.hs ===================================== @@ -58,7 +58,7 @@ module GHC.Internal.Conc.IO #endif ) where -import GHC.Internal.Base (otherwise, pure, return, ($)) +import GHC.Internal.Base (otherwise, return, ($)) import GHC.Internal.Conc.Sync as Sync import GHC.Internal.Err (errorWithoutStackTrace) import GHC.Internal.STM as STM @@ -82,6 +82,10 @@ import qualified GHC.Internal.Wasm.Prim.Conc as Wasm import qualified GHC.Internal.Wasm.Prim.Flag as Wasm #endif +#if defined(javascript_HOST_ARCH) +import GHC.Internal.Base (pure) +#endif + ensureIOManagerIsRunning :: IO () #if defined(javascript_HOST_ARCH) ensureIOManagerIsRunning = pure () ===================================== libraries/ghc-internal/src/GHC/Internal/Event/Control.hs ===================================== @@ -29,7 +29,7 @@ module GHC.Internal.Event.Control #include <ghcplatform.h> #include "EventConfig.h" -import GHC.Internal.Base (fmap, otherwise, pure, return, when, ($), (.)) +import GHC.Internal.Base (fmap, otherwise, return, when, ($), (.)) import GHC.Internal.Classes (Eq(..), (&&)) import GHC.Internal.IORef import GHC.Internal.Conc.Signal (Signal) @@ -56,6 +56,10 @@ import GHC.Internal.Foreign.C.Types (CULLong(..)) import GHC.Internal.Foreign.C.Error (eAGAIN, eWOULDBLOCK, eBADF) #endif +#if defined(wasm32_HOST_ARCH) +import GHC.Internal.Base (pure) +#endif + data ControlMessage = CMsgWakeup | CMsgDie | CMsgSignal {-# UNPACK #-} !(ForeignPtr Word8) ===================================== libraries/ghc-internal/src/GHC/Internal/Event/KQueue.hsc ===================================== @@ -33,7 +33,7 @@ import GHC.Internal.Data.Bits (Bits(..), FiniteBits(..)) import GHC.Internal.Err (errorWithoutStackTrace, undefined) import GHC.Internal.Int import GHC.Internal.Data.Maybe (Maybe(..), catMaybes) -import GHC.Internal.Types (Bool(..), Int, IO) +import GHC.Internal.Types (Bool(..), IO) import GHC.Internal.Word (Word16, Word32) import GHC.Internal.Foreign.C.Error (throwErrnoIfMinus1, eINTR, eINVAL, eNOTSUP, getErrno, throwErrno) ===================================== libraries/ghc-internal/src/GHC/Internal/Float.hs ===================================== @@ -185,12 +185,12 @@ import GHC.Internal.Prim ( decodeFloat_Int#, divideFloat#, double2Float#, eqWord#, expDouble#, expFloat#, expm1Double#, expm1Float#, fabsDouble#, fabsFloat#, float2Double#, geFloat#, gtFloat#, gtWord#, int2Float#, int2Double#, - int2Word#, int64ToInt#, leFloat#, log1pDouble#, log1pFloat#, logDouble#, + int2Word#, leFloat#, log1pDouble#, log1pFloat#, logDouble#, logFloat#, ltFloat#, ltWord#, minusFloat#, minusWord#, negateDouble#, negateFloat#, negateInt#, plusFloat#, powerFloat#, sinDouble#, sinFloat#, sinhDouble#, sinhFloat#, sqrtDouble#, sqrtFloat#, tanDouble#, tanFloat#, tanhDouble#, tanhFloat#, timesFloat#, uncheckedIShiftRA#, uncheckedShiftL#, - word2Float#, word2Double#, word2Int#, word64ToWord#, + word2Float#, word2Double#, word2Int#, (+#), (+##), (-#), (-##), (*##), (**##), (/##), (<#), (<##), (<=#), (<=##), (>#), (>##), (>=#), (>=##), ) @@ -206,6 +206,13 @@ import GHC.Internal.Float.RealFracMethods import GHC.Internal.Float.ConversionUtils import GHC.Internal.Bignum.BigNat +#if WORD_SIZE_IN_BITS == 64 +import GHC.Internal.Prim ( + int64ToInt#, + word64ToWord#, + ) +#endif + infixr 8 ** -- $setup ===================================== libraries/ghc-internal/src/GHC/Internal/Float/RealFracMethods.hs ===================================== @@ -66,7 +66,7 @@ import GHC.Internal.Classes (Ord(..)) import GHC.Internal.Num () -- instance Num Integer -- (We could remove uses with a little effort) import GHC.Internal.Prim ( - Int#, eqFloat#, decodeFloat_Int#, double2Int#, float2Int#, int2Float#, + eqFloat#, decodeFloat_Int#, double2Int#, float2Int#, int2Float#, int2Double#, int2Word#, ltFloat#, minusFloat#, negateFloat#, negateDouble#, negateInt#, uncheckedIShiftL#, uncheckedIShiftRA#, uncheckedIShiftRL#, (+#), (-#), (<#), (>#), (-##), (==##), (<##), @@ -86,6 +86,10 @@ import GHC.Internal.Prim ( #else +import GHC.Internal.Prim ( + Int#, + ) + #define TO64 integerToInt# #define FROM64 IS #define MINUS64 ( -# ) @@ -355,4 +359,3 @@ foreign import ccall unsafe "rintDouble" foreign import ccall unsafe "rintFloat" c_rintFloat :: Float -> Float - ===================================== libraries/ghc-internal/src/GHC/Internal/IO/FD.hs ===================================== @@ -30,7 +30,7 @@ module GHC.Internal.IO.FD ( ) where import GHC.Internal.Base ( - String, fmap, id, otherwise, pure, return, when, ($), (.), (++), (>>=), + String, fmap, otherwise, pure, return, when, ($), (.), (++), (>>=), ) import GHC.Internal.Bits import GHC.Internal.Classes (Eq(..), Ord(..), not, (&&), (||)) @@ -58,6 +58,10 @@ import GHC.Internal.Err (error) import GHC.Internal.Windows import GHC.Internal.IO.SubSystem ((<!>)) import GHC.Internal.Foreign.Storable +#else +import GHC.Internal.Base ( + id, + ) #endif import GHC.Internal.Foreign.C.Types ===================================== libraries/ghc-internal/src/GHC/Internal/Int.hs ===================================== @@ -51,7 +51,7 @@ import GHC.Internal.Classes ( Eq(..), Ord(..), eqInt, neInt, gtInt, geInt, ltInt, leInt, divInt8#, divInt16#, divInt32#, - divModInt8#, divModInt16#, divModInt32#, divModInt#, + divModInt8#, divModInt16#, divModInt32#, modInt8#, modInt16#, modInt32#, (&&), (||), ) @@ -63,6 +63,12 @@ import GHC.Internal.Arr import GHC.Internal.Show import GHC.Internal.Types (Bool(..), Float, Double, Int(..), isTrue#) +#if WORD_SIZE_IN_BITS == 64 +import GHC.Internal.Classes ( + divModInt#, + ) +#endif + ------------------------------------------------------------------------ -- type Int8 ------------------------------------------------------------------------ ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags.hsc ===================================== @@ -66,7 +66,7 @@ import GHC.Internal.Ptr import GHC.Internal.Types (Bool(..), Double, Int) import GHC.Internal.Word import GHC.Internal.Base ( - String, otherwise, pure, return, (.), (++), (<*>), (=<<), + String, otherwise, return, (.), (++), (<*>), (=<<), ) import GHC.Internal.Enum import GHC.Internal.Generics (Generic) @@ -74,6 +74,10 @@ import GHC.Internal.IO import GHC.Internal.Real import GHC.Internal.Show +#if defined(javascript_HOST_ARCH) +import GHC.Internal.Base (pure) +#endif + -- | 'RtsTime' is defined as a @StgWord64@ in @stg/Types.h@ -- -- @since base-4.8.2.0 ===================================== libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc ===================================== @@ -8,16 +8,20 @@ module GHC.Internal.RTS.Flags.Test ) where -import GHC.Internal.Base (pure) import GHC.Internal.Ptr -import GHC.Internal.Foreign.C.Types -import GHC.Internal.Foreign.Marshal.Utils import GHC.Internal.Foreign.Storable import GHC.Internal.Data.Functor ((<$>)) import GHC.Internal.Types (Bool(..), Int, IO) import GHC.Internal.Word (Word32) import GHC.Internal.Real (fromIntegral) +#if defined(javascript_HOST_ARCH) +import GHC.Internal.Base (pure) +#else +import GHC.Internal.Foreign.C.Types +import GHC.Internal.Foreign.Marshal.Utils +#endif + #include "Rts.h" #include "rts/Flags.h" ===================================== libraries/ghc-internal/src/GHC/Internal/System/Environment.hs ===================================== @@ -49,9 +49,13 @@ import GHC.Internal.Base (fmap) import GHC.Internal.Classes (Ord(..)) import GHC.Internal.Control.Exception.Base (bracket) import GHC.Internal.Err (undefined) +#else +import GHC.Internal.Base ( + map, (++), + ) #endif import GHC.Internal.Base ( - String, liftM, map, mapM, otherwise, return, ($), (.), (++), (>>=), + String, liftM, mapM, otherwise, return, ($), (.), (>>=), ) import GHC.Internal.List (null, elem, takeWhile, break) import GHC.Internal.Maybe (Maybe(..)) ===================================== libraries/ghc-internal/src/GHC/Internal/System/Environment/Blank.hsc ===================================== @@ -43,7 +43,7 @@ import GHC.Internal.Classes (Eq(..)) import GHC.Internal.Data.Functor import GHC.Internal.Data.List (elem, null, takeWhile) import GHC.Internal.Foreign.C.String -import GHC.Internal.Base (String, otherwise, return, ($)) +import GHC.Internal.Base (String, otherwise, ($)) #if defined(mingw32_HOST_OS) import GHC.Internal.Base ((.)) import GHC.Internal.Foreign.Ptr @@ -51,6 +51,7 @@ import GHC.Internal.Windows import GHC.Internal.Control.Monad import GHC.Internal.Data.List (lookup) #else +import GHC.Internal.Base (return) import GHC.Internal.Foreign.C.Error import GHC.Internal.Foreign.C.Types import GHC.Internal.Real (fromIntegral) ===================================== libraries/ghc-internal/src/GHC/Internal/System/IO.hs ===================================== @@ -249,6 +249,7 @@ import GHC.Internal.Base (String, failIO, otherwise, return, ($), (.), (>>=)) import GHC.Internal.List #if !defined(mingw32_HOST_OS) import GHC.Internal.IORef +import GHC.Internal.Types (Int) #endif import GHC.Internal.Num import GHC.Internal.IO hiding ( bracket, onException ) @@ -262,7 +263,7 @@ import GHC.Internal.IO.Encoding import GHC.Internal.Text.Read import GHC.Internal.IO.StdHandles import GHC.Internal.Show -import GHC.Internal.Types (Bool(..), Char, Int) +import GHC.Internal.Types (Bool(..), Char) ----------------------------------------------------------------------------- -- Standard IO ===================================== libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs ===================================== @@ -46,19 +46,20 @@ import GHC.Internal.Data.Maybe #if !defined(HTYPE_TCFLAG_T) import GHC.Internal.System.IO.Error +#if !defined(mingw32_HOST_OS) +import GHC.Internal.Err (errorWithoutStackTrace) +#endif #endif import GHC.Internal.Base ( String, otherwise, pure, return, when, ($), (++), (>>=), ) import GHC.Internal.Bits -import GHC.Internal.Classes (Eq(..), Ord(..), not, (&&), (||)) -import GHC.Internal.CString (cstringLength#) -import GHC.Internal.Err (errorWithoutStackTrace) +import GHC.Internal.Classes (Eq(..), not, (&&), (||)) import GHC.Internal.Num import GHC.Internal.Prim (yield#) import GHC.Internal.Real -import GHC.Internal.Types (Bool(..), Int(..)) +import GHC.Internal.Types (Bool(..)) import GHC.Internal.Word import GHC.Internal.IO import GHC.Internal.IO.IOMode @@ -71,10 +72,13 @@ import GHC.Internal.Int (Int64) #endif #if !defined(mingw32_HOST_OS) +import GHC.Internal.CString (cstringLength#) +import GHC.Internal.Classes (Ord(..)) import {-# SOURCE #-} GHC.Internal.IO.Encoding (getFileSystemEncoding) import GHC.Internal.Foreign.Marshal.Utils import GHC.Internal.Foreign.Storable import qualified GHC.Internal.Foreign.C.String.Encoding as GHC +import GHC.Internal.Types (Int(..)) #else import GHC.Internal.Int import GHC.Internal.Data.OldList (elem) ===================================== libraries/ghc-internal/src/GHC/Internal/TopHandler.hs ===================================== @@ -39,12 +39,12 @@ module GHC.Internal.TopHandler ( import GHC.Internal.Control.Exception import GHC.Internal.Data.Maybe -import GHC.Internal.Classes (Eq(..), Ord(..), (&&)) +import GHC.Internal.Classes (Eq(..)) import GHC.Internal.Foreign.C.Error import GHC.Internal.Foreign.C.Types import GHC.Internal.Foreign.C.String import GHC.Internal.Base ( - String, const, failIO, otherwise, pure, return, ($), (++), (>>), + String, failIO, return, ($), (++), (>>), ) import GHC.Internal.Conc.Sync hiding (throwTo) import GHC.Internal.Prim (Weak#, seq) @@ -67,6 +67,17 @@ import GHC.Internal.Conc.Signal import GHC.Internal.Data.Dynamic (toDyn) #endif +#if !defined(HAVE_SIGNAL_H) +import GHC.Internal.Base (pure) +#endif + +#if !defined(mingw32_HOST_OS) && !defined(javascript_HOST_ARCH) +import GHC.Internal.Base ( + const, otherwise, + ) +import GHC.Internal.Classes (Ord(..), (&&)) +#endif + -- Note [rts_setMainThread must be called unsafely] -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- rts_setMainThread must be called as unsafe, because it ===================================== libraries/ghci/GHCi/Message.hs ===================================== @@ -71,7 +71,6 @@ import qualified GHC.Boot.TH.Monad as TH import System.Exit import System.IO import System.IO.Error -import Data.Word (Word8) -- ----------------------------------------------------------------------------- -- The RPC protocol between GHC and the interactive server ===================================== libraries/ghci/GHCi/Server.hs ===================================== @@ -26,7 +26,6 @@ import GHC.Wasm.Prim #else import GHCi.Utils #endif -import Data.Word (Word8) import Control.DeepSeq import Control.Exception ===================================== rts/Interpreter.c ===================================== @@ -718,7 +718,7 @@ slow_spw(void *Sp, StgStack *cur_stack, StgWord offset_words){ } // 2b. Access the element if there is no underflow frame, it must be right // at the top of the stack. - else if(Sp_plusW(offset_words) < (StgPtr)(cur_stack->stack + cur_stack->stack_size)) { + else if(Sp_plusW(offset_words) < (void*)(cur_stack->stack + cur_stack->stack_size)) { // Still inside the stack chunk return Sp_plusW(offset_words); } else { @@ -2469,7 +2469,7 @@ run_BCO: threadStackUnderflow(cap, cap->r.rCurrentTSO); LOAD_STACK_POINTERS; by -= sp_to_uf; - } else if (Sp_plusW(by) < (StgPtr)(stk->stack + stk->stack_size)) { + } else if (Sp_plusW(by) < (void*)(stk->stack + stk->stack_size)) { // we're within the first stack chunk, this chunk has // no underflow frame break; View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/2e3a2805327b7d47a8d6f69d0081f4… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/2e3a2805327b7d47a8d6f69d0081f4… You're receiving this email because of your account on gitlab.haskell.org.

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