July 2026 - ghc-commits

[Git][ghc/ghc][wip/21101] Apply 1 suggestion(s) to 1 file(s)
by Sasha Bogicevic (＠Bogicevic) 19 Jul '26

19 Jul '26

Sasha Bogicevic pushed to branch wip/21101 at Glasgow Haskell Compiler / GHC Commits: 41c096ef by Sasha Bogicevic at 2026-07-19T17:48:02+00:00 Apply 1 suggestion(s) to 1 file(s) Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> - - - - - 1 changed file: - compiler/GHC/Types/Hint/Ppr.hs Changes: ===================================== compiler/GHC/Types/Hint/Ppr.hs ===================================== @@ -350,7 +350,7 @@ instance Outputable GhcHint where <+> text "which matches" <+> quotes (ppr con) <+> text "regardless of its fields" SuggestExplicitConstructorArguments con nbArgs -> text "Apply" <+> quotes (ppr con) <+> text "to its" - <+> speakNOf nbArgs (text "argument") <+> text "instead" + <+> speakNOf nbArgs (text "argument") perhapsAsPat :: SDoc perhapsAsPat = text "Perhaps you meant an as-pattern, which must not be surrounded by whitespace" View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/41c096efbf3c729cb842911d29a55f2… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/41c096efbf3c729cb842911d29a55f2… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/21101] Apply 1 suggestion(s) to 1 file(s)
by Sasha Bogicevic (＠Bogicevic) 19 Jul '26

19 Jul '26

Sasha Bogicevic pushed to branch wip/21101 at Glasgow Haskell Compiler / GHC Commits: a5a8d829 by Sasha Bogicevic at 2026-07-19T17:47:39+00:00 Apply 1 suggestion(s) to 1 file(s) Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> - - - - - 1 changed file: - compiler/GHC/Rename/Pat.hs Changes: ===================================== compiler/GHC/Rename/Pat.hs ===================================== @@ -874,7 +874,6 @@ rnHsRecFields ctxt mk_arg (HsRecFields { rec_flds = flds, rec_dotdot = dotdot }) ; checkErr dd_flag (needFlagDotDot ctxt) ; (rdr_env, lcl_env) <- getRdrEnvs ; conInfo <- lookupConstructorInfo qcon - ; case conFieldInfo conInfo of ConHasPositionalArgs nbArgs -> addErr $ TcRnIllegalWildcardsInConstructor (toRecordFieldPart ctxt) con nbArgs View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a5a8d8296d502033d9226b74be9ce2b… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a5a8d8296d502033d9226b74be9ce2b… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/21101] Apply 1 suggestion(s) to 1 file(s)
by Sasha Bogicevic (＠Bogicevic) 19 Jul '26

19 Jul '26

Sasha Bogicevic pushed to branch wip/21101 at Glasgow Haskell Compiler / GHC Commits: 81ab5074 by Sasha Bogicevic at 2026-07-19T17:47:27+00:00 Apply 1 suggestion(s) to 1 file(s) Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> - - - - - 1 changed file: - compiler/GHC/Rename/Env.hs Changes: ===================================== compiler/GHC/Rename/Env.hs ===================================== @@ -424,9 +424,11 @@ lookupConstructorInfo qcon@(WithUserRdr _ con_name) ; case info of IAmConLike con_info -> return con_info UnboundGRE -> return $ ConInfo (ConIsData []) (ConHasPositionalArgs 0) - -- The arity is a dummy: an unbound constructor never reaches the - -- code that consults it (see the isUnboundName guard in - -- GHC.Rename.Pat.rn_dotdot). + -- NB: it's OK to use the dummy value of '0' for the constructor arity: + -- we only use this information for 'TcRnIllegalWildcardsInConstructor', + -- which is an error we don't emit when the constructor is unbound. + -- See GHC.Rename.Pat.rnHsRecFields.rn_dotdot. + IAmTyCon {} -> failIllegalTyCon WL_ConLike qcon _ -> pprPanic "lookupConstructorInfo: not a ConLike" $ vcat [ text "name:" <+> ppr con_name ] View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/81ab5074ed147ba491b12b8873b5bc6… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/81ab5074ed147ba491b12b8873b5bc6… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/21101] Apply 1 suggestion(s) to 1 file(s)
by Sasha Bogicevic (＠Bogicevic) 19 Jul '26

19 Jul '26

Sasha Bogicevic pushed to branch wip/21101 at Glasgow Haskell Compiler / GHC Commits: 7314b405 by Sasha Bogicevic at 2026-07-19T17:46:57+00:00 Apply 1 suggestion(s) to 1 file(s) Co-authored-by: sheaf <sam.derbyshire(a)gmail.com> - - - - - 1 changed file: - compiler/GHC/Tc/Errors/Types.hs Changes: ===================================== compiler/GHC/Tc/Errors/Types.hs ===================================== @@ -825,9 +825,6 @@ data TcRnMessage where worded accordingly. Constructors with no fields at all do not trigger this error: since GHC proposal 496 ("Nullary record wildcards"), @C {..}@ is legal for nullary constructors. - The 'VisArity' field records the constructor's number of positional arguments - which the suggested fix mentions. - Example(s): data D = D Int Bool @@ -845,7 +842,11 @@ data TcRnMessage where rename/should_fail/T9815bghci.hs rename/should_fail/T21101.hs -} - TcRnIllegalWildcardsInConstructor :: !RecordFieldPart -> !Name -> !VisArity -> TcRnMessage + TcRnIllegalWildcardsInConstructor + :: !RecordFieldPart -- ^ context in which the constructor application occurs + -> !Name -- ^ name of the constructor + -> !VisArity -- ^ arity of the constructor + -> TcRnMessage {-| TcRnIgnoringAnnotations is a warning that occurs when the source code contains annotation pragmas but the platform in use does not support an View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7314b40552df312244e074bf17d4293… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/7314b40552df312244e074bf17d4293… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/21101] 34 commits: ci: add missing docker permission workaround in abi-test job
by Sasha Bogicevic (＠Bogicevic) 19 Jul '26

19 Jul '26

Sasha Bogicevic pushed to branch wip/21101 at Glasgow Haskell Compiler / GHC Commits: 0f64f348 by Cheng Shao at 2026-07-16T15:41:08+00:00 ci: add missing docker permission workaround in abi-test job - - - - - 660cb239 by Cheng Shao at 2026-07-16T19:37:48+00:00 bindist: Fix make install -j race condition on macos/freebsd This patch fixes make install -j race condition on macos/freebsd. BSD install fails with EEXIST when multiple install processes concurrently create the same prefix directory. So we add an `install_dirs` prerequisite job that sequentially creates the directories for subsequent jobs to work with. Fixes #27499. Co-authored-by: Codex <codex(a)openai.com> - - - - - 08130257 by Cheng Shao at 2026-07-16T19:37:48+00:00 ci: run bindist make install with -j This patch makes the ci scripts run `make install` with `-j` to reduce wall clock time when installing the bindist, see related issue for benchmark numbers. This only affects ghc ci logic, the user-facing default is up to distributors and is still `-j1`. Closes #27029. - - - - - d5ae6906 by Adam Gundry at 2026-07-17T04:57:43-04:00 Mark various language extension flags as deprecated (see #27329) The following language extensions are now deprecated: - AlternativeLayoutRule - AlternativeLayoutRuleTransitional - ParallelArrays - PolymorphicComponents - Rank2Types In addition, the warning `-Walternative-layout-rule-transitional` has been marked as deprecated, as it is emitted only under the deprecated extension `XAlternativeLayoutRuleTransitional`. - - - - - fe3b059c by Andrew Lelechenko at 2026-07-17T04:58:26-04:00 base: re-export GHC.Environment.getFullArgs from System.Environment CLC proposal https://github.com/haskell/core-libraries-committee/issues/431 - - - - - 722236dd by sheaf at 2026-07-18T08:48:31-04:00 Coercion optimisation: avoid double-Sym for InstCo Ticket #27374 pointed out an issue with GHC.Core.Coercion.Opt.optCoercion's handling of InstCo: it contravened (LC2) in Note [The LiftingContext in optCoercion] because it applied the ambient 'sym' to a coercion that was then added to the lifting context substitution. Fixes #27374 Co-authored-by: Simon Jakobi <simon.jakobi(a)gmail.com> - - - - - ff70fc75 by sheaf at 2026-07-18T08:48:31-04:00 Coercion optimisation: avoid exponential behaviour The change to coercion optimisation of 'InstCo' in the previous commit introduces exponential behaviour to the coercion optimiser. To avoid this, this commit provides a way to push in 'Sym' of an already-optimised coercion: GHC.Core.Coercion.Opt.mkDeepSymCo. See Note [Pushing Sym without re-optimising] in GHC.Core.Coercion.Opt. - - - - - dfef27f0 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Move THREADED_RTS-conditional struct members to end of Capability Accessing members of the Capability struct from CMM code rely on accessor macros. (The macros are generated by deriveConstants). These macros have a single definition. This means that the offsets of all struct members must *not* vary based on THREADED_RTS vs !THREADED_RTS. This requires that any struct members that are conditional on THREADED_RTS must occur after the unconditional struct members. Hence we move all the ones that are conditional on THREADED_RTS to the end. Add a deriveConstants entry for the iomgr member of the Capability struct, which was the motivation for this change. Add warning messages to help our future selves. Debugging this took me a couple hours in gdb! - - - - - c254e022 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Make the IOManager API use CapIOManager rather than Capability This makes the API somewhat more self-contained and more consistent. Now the IOManager API and each of the backends takes just the I/O manager structure. Previously we had a bit of a mixture, depending on whether the function needed access to the Capability or just the CapIOManager. We still need access to the cap, so we introduce a back reference to reach the capability, via iomgr->cap. Convert all uses in select and poll backends, but not win32 ones. Convert callers in the scheduler and elsewhere. Also convert the three CMM primops that call IOManager APIs. They just need to use Capability_iomgr(MyCapability()). - - - - - 4f3d8f31 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Split posix/MIO.c out of posix/Signals.c The MIO I/O manager was secretly living inside the Signals file. Now it gets its own file, like any other self-respecting I/O manager. - - - - - 52ce04a9 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Rationalise some scheduler run queue utilities Move them all to the same place in the file. Make some static that were used only internally. Also remove a redundant assignment after calling truncateRunQueue that is already done within truncateRunQueue. - - - - - 75bbdebc by Duncan Coutts at 2026-07-18T08:49:12-04:00 Rename initIOManager{AfterFork} to {re}startIOManager These are more accurate names, since these actions happen after initialisation and are really about starting (or restarting) background threads. - - - - - 724c0517 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Free per-cap I/O managers during shutdown and forkProcess Historically this was not strictly necessary. The select and win32 legacy I/O managers did not maintain any dynamically allocated resources. The new poll one does (an auxillary table), and so this should be freed. After forkProcess, all threads get deleted. This includes threads waiting on I/O or timers. So as of this patch, resetting the I/O manager is just about tidying things up. For example, for the poll I/O manager this will reset the size of the AIOP table (which otherwise grows but never shrinks). In future however the re-initialising will become neeecessary for functionality, since some I/O managers will need to re-initialise wakeup fds that are set CLOEXEC. - - - - - c007d122 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Add a TODO to the MIO I/O manager The direction of travel is to make I/O managers per-capability and have all their state live in the struct CapIOManager. The MIO I/O manager however still has a number of global variables. It's not obvious how handle these globals however. - - - - - b65ab7b3 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Add a FIXME note in the Poll I/O manager - - - - - daf2bd6f by Duncan Coutts at 2026-07-18T08:49:12-04:00 Add missing updateRemembSetPushClosure in poll I/O manager For the non-moving GC. - - - - - e33ca830 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Minor doc improvement to struct StgAsyncIOOp member outcome Mention the enumeration names, as well as their numeric values. The rest of the code uses the enum names. - - - - - 4edd2579 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Minor doc improvements for StgTSOBlockInfo Clarify that certain union members are used only by certain legacy I/O managers. Hopefully we will be able to remove these at some point. - - - - - 536bedbb by Duncan Coutts at 2026-07-18T08:49:12-04:00 Avoid exporting various win32-specific rts symbols The BeginPrivate.h / EndPrivate.h scheme works perfectly well on Windows, but all of the rts/win32/*.h files were not using it. - - - - - 8139b5ac by Duncan Coutts at 2026-07-18T08:49:12-04:00 Remove wakeupIOManager, ioManagerWakeup and setIOManagerWakeupFd We no longer need wakeupIOManager for the threaded RTS case, so we can remove it and the bits only needed to support it. This includes the pipe/eventfd fd shared between the RTS and the in-library I/O manager used for waking up the I/O manager thread. The pipe/eventfd still exists, but it no longer has to be communicated to the RTS, since the RTS no longer needs to use it. So we remove the RTS API export setIOManagerWakeupFd, and remove uses of it within the I/O managers in ghc-internal. - - - - - 74fe7c66 by Duncan Coutts at 2026-07-18T08:49:12-04:00 Add a new interruptIOManager API for the I/O managers It will be used to interrupt awaitCompletedTimeoutsOrIO. Also update the return type and docs for awaitCompletedTimeoutsOrIO to have it return false when it gets interrupted, and have no useful post condition in that case. - - - - - 38792843 by Duncan Coutts at 2026-07-18T08:49:13-04:00 Add interruptIOManager support for select I/O manager Uses the FdWakup mechanism. - - - - - 2f3b00aa by Duncan Coutts at 2026-07-18T08:49:13-04:00 Add interruptIOManager support for poll I/O manager Uses the FdWakup mechanism. A quirk we have to cope with is that we now need to poll one more fd -- the wakeup_fd_r -- but this fd has no corresponding entry in the aiop_table. This is awkward since we have set up our aiop_poll_table to be an auxilliary table with matching indicies. The solution this patch uses (and described in the comments) is to have two tables: struct pollfd *aiop_poll_table, *full_poll_table; and to have the aiop_poll_table alias the tail of the full_poll_table. The head entry in the full_poll_table is the extra fd. So we poll the full_poll_table, while the aiop_poll_table still has matching indicies with the aiop_table. Hurrah for C aliasing rules. - - - - - cee50131 by Duncan Coutts at 2026-07-18T08:49:13-04:00 Add interruptIOManager support for win32 legacy I/O manager And remove unused related helper resetAbandonRequestWait. It is not called because the event is created in auto-reset mode, so never needs to be reset manually. - - - - - cf453143 by Duncan Coutts at 2026-07-18T08:49:13-04:00 Note lack of interruptIOManager support for WinIO I/O manager Though there's a plausible design, we can't sanely test it at the moment due to related WinIO bugs. Filed as issue #27403. - - - - - 1b74a0ad by Duncan Coutts at 2026-07-18T08:49:13-04:00 Be more explicit about enum IOReadOrWrite values, and type within cmm Belt and braces. - - - - - b388d093 by Brian McKenna at 2026-07-18T17:51:50-04:00 Ignore ticks in the pattern-match term oracle The term-oracle in the pattern-match checker is keyed by a canonical form of the scrutinee, computed by `makeDictsCoherent`. That canonical form was tick-sensitive: two occurrences of an otherwise identical expression that happened to carry different ticks were treated as distinct values, breaking long-distance information. This shows up in practice under `-finfo-table-map`, because the desugarer wraps every record-selector use site in a `SourceNote` carrying that site's span. For example: data Box = Box { unBox :: Maybe Int } f b = case unBox b of Nothing -> 0 Just _ -> let Just x = unBox b in x The two `unBox b` expressionss carry different SourceNote spans, the pattern-match checker sees them as different, the long-distance information from the outer `Just _` branch never reaches the let-pattern, and `Just x = unBox b` is wrongly reported as non-exhaustive. We now strip all ticks in `makeDictsCoherent`. This is documented as Wrinkle (UD1) of Note [Unique dictionaries in the TmOracle CoreMap]. Fixes #27314 - - - - - c23e1acb by Mrjtjmn at 2026-07-18T17:52:45-04:00 Add explanations for unsolved Typeable constraints This commit adds explanations for unsolved 'Typeable' constraints. GHC will now provide additional explanations for an unsolved constraint of the form 'Typeable ty', explain why GHC did not solve Typeable constraint. e.g.: - 'ty' is a polymorphic type (e.g. forall a. a -> a) - 'ty' is a qualified type (e.g. Eq Int => Int) - 'ty' is an unboxed sum type - 'ty' is an unreduced type family application - 'ty' whose kind is not typeable Fixes #26532 - - - - - cbef021e by Artem Pelenitsyn at 2026-07-19T07:49:55-04:00 ghc-internal: Lock.hs: fix typo and indentation - - - - - 42918646 by Duncan Coutts at 2026-07-19T07:50:36-04:00 Fix failing test GcStaticPointers for non-moving GC Minor mistake in asserting something before checking for that same thing. Specifically, Bdescr asserts HEAP_ALLOCED_GC, but Bdescr was being used prior to a guard that checks HEAP_ALLOCED_GC. The solution is just to move the use of Bdescr after the guard. Thanks to Simon Jakobi for identifying the problem. - - - - - 2b59e6a8 by Sasha Bogicevic at 2026-07-19T19:35:49+02:00 21101 Error message text for invalid record wildcard match - - - - - b64ffd4f by Sasha Bogicevic at 2026-07-19T19:35:49+02:00 Improve error message for record wildcards with fieldless constructors TcRnIllegalWildcardsInConstructor now stores a RecordFieldPart, so the message distinguishes record patterns from record constructions, and its suggested fixes are structured GhcHints (SuggestEmptyRecordBraces, SuggestExplicitConstructorArguments) that tools like HLS can turn into code actions. Storing HsRecFieldContext directly is not possible: GHC.Tc.Errors.Types is reachable from the parser via GHC.Types.Error.Codes, while GHC.Rename.Pat depends on the parser — so we reuse the existing RecordFieldPart mirror and toRecordFieldPart. Fixes #21101 - - - - - aac211c7 by Sasha Bogicevic at 2026-07-19T19:35:50+02:00 Record wildcard hints: show them in more contexts, and include arity (#21101) Address review feedback on !8673: * Emit SuggestExplicitConstructorArguments for record patterns as well as record construction, so `f (C {..}) = ...` also suggests rewriting to positional form. SuggestEmptyRecordBraces remains pattern-only, since `C {}` as an expression would construct a value with all fields unset. * Store the constructor's visible arity in ConHasPositionalArgs so the hint can say how many arguments to write, e.g. Apply ‘D’ to its two arguments instead The arity is threaded from the parsed declaration through LConsWithFields: the per-constructor payload changes from Maybe [Located Int] to Either VisArity [Located Int], where Left n means the constructor has n unlabelled arguments. Updates test baselines: T21101, T9815, T9815b, T9815ghci, T9815bghci. - - - - - 55bb8320 by Sasha Bogicevic at 2026-07-19T19:35:50+02:00 Add changelog entry - - - - - 134 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - + changelog.d/21101 - + changelog.d/T26532 - + changelog.d/T27314.md - + changelog.d/T27329 - + changelog.d/T27374 - + changelog.d/fix-make-install-j - compiler/GHC/Core/Coercion/Opt.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Session.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Pmc/Solver.hs - compiler/GHC/Rename/Env.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Instance/Typeable.hs - compiler/GHC/Tc/Types/Rank.hs - compiler/GHC/Types/GREInfo.hs - compiler/GHC/Types/Hint.hs - compiler/GHC/Types/Hint/Ppr.hs - docs/users_guide/expected-undocumented-flags.txt - docs/users_guide/exts/rank_polymorphism.rst - docs/users_guide/exts/static_pointers.rst - hadrian/bindist/Makefile - libraries/base/changelog.md - libraries/base/src/System/Environment.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/Event/Control.hs - libraries/ghc-internal/src/GHC/Internal/Event/Manager.hs - libraries/ghc-internal/src/GHC/Internal/Event/TimerManager.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock.hs - rts/Capability.c - rts/Capability.h - rts/IOManager.c - rts/IOManager.h - rts/IOManagerInternals.h - rts/PrimOps.cmm - rts/RaiseAsync.c - rts/RtsStartup.c - rts/RtsSymbols.c - rts/Schedule.c - rts/Schedule.h - rts/include/rts/IOInterface.h - rts/include/rts/storage/Closures.h - rts/include/rts/storage/TSO.h - rts/posix/FdWakeup.h - + rts/posix/MIO.c - + rts/posix/MIO.h - rts/posix/Poll.c - rts/posix/Poll.h - rts/posix/Select.c - rts/posix/Select.h - rts/posix/Signals.c - rts/posix/Signals.h - rts/posix/Timeout.c - rts/posix/Timeout.h - rts/rts.cabal - rts/sm/NonMovingMark.c - rts/win32/AsyncMIO.c - rts/win32/AsyncMIO.h - rts/win32/AsyncWinIO.h - rts/win32/AwaitEvent.c - rts/win32/AwaitEvent.h - rts/win32/ConsoleHandler.h - rts/win32/MIOManager.h - rts/win32/ThrIOManager.h - rts/win32/WorkQueue.h - rts/win32/veh_excn.h - testsuite/tests/backpack/should_compile/T13149.bkp - + testsuite/tests/corelint/T27374.hs - testsuite/tests/corelint/all.T - testsuite/tests/determinism/determ017/A.hs - testsuite/tests/ghci/scripts/T12005.script - testsuite/tests/haddock/perf/Fold.hs - testsuite/tests/indexed-types/should_fail/T7354.hs - 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/layout/layout001.stdout - testsuite/tests/layout/layout002.stdout - testsuite/tests/layout/layout003.stdout - testsuite/tests/layout/layout004.stdout - testsuite/tests/layout/layout005.stdout - testsuite/tests/layout/layout006.stdout - testsuite/tests/layout/layout007.stdout - testsuite/tests/layout/layout008.stdout - testsuite/tests/layout/layout009.stdout - testsuite/tests/linear/should_compile/T1735Min.hs - + testsuite/tests/parser/should_compile/T13087.stderr - testsuite/tests/parser/should_fail/T8431.stderr - testsuite/tests/parser/should_fail/readFail038.stderr - testsuite/tests/perf/compiler/T3064.hs - + testsuite/tests/pmcheck/should_compile/T27314.hs - testsuite/tests/pmcheck/should_compile/all.T - testsuite/tests/polykinds/T7594.hs - testsuite/tests/programs/thurston-modular-arith/Main.hs - + testsuite/tests/rename/should_fail/T21101.hs - + testsuite/tests/rename/should_fail/T21101.stderr - testsuite/tests/rename/should_fail/T9815.stderr - testsuite/tests/rename/should_fail/T9815b.stderr - testsuite/tests/rename/should_fail/T9815bghci.stderr - testsuite/tests/rename/should_fail/T9815ghci.stderr - testsuite/tests/rename/should_fail/all.T - testsuite/tests/rts/ipe/IpeStats/Fold.hs - testsuite/tests/simplCore/should_compile/T11562.hs - testsuite/tests/simplCore/should_run/T3591.hs - testsuite/tests/typecheck/should_compile/DeepSubsumption02.hs - testsuite/tests/typecheck/should_compile/T12507.hs - testsuite/tests/typecheck/should_compile/T13951.hs - testsuite/tests/typecheck/should_compile/T18920.hs - testsuite/tests/typecheck/should_compile/T2595.hs - testsuite/tests/typecheck/should_compile/T7541.hs - testsuite/tests/typecheck/should_fail/T15067.stderr - + testsuite/tests/typecheck/should_fail/T26532.hs - + testsuite/tests/typecheck/should_fail/T26532.stderr - testsuite/tests/typecheck/should_fail/T6069.stderr - testsuite/tests/typecheck/should_fail/T7368a.hs - testsuite/tests/typecheck/should_fail/T9858b.stderr - testsuite/tests/typecheck/should_fail/TcStaticPointersFail02.stderr - testsuite/tests/typecheck/should_fail/all.T - testsuite/tests/typecheck/should_run/T1735_Help/Basics.hs - testsuite/tests/typecheck/should_run/T3731-short.hs - testsuite/tests/typecheck/should_run/T3731.hs - testsuite/tests/typecheck/should_run/church.hs - testsuite/tests/typecheck/should_run/tcrun008.hs - testsuite/tests/typecheck/should_run/tcrun017.hs - testsuite/tests/typecheck/should_run/tcrun026.hs - testsuite/tests/typecheck/should_run/tcrun035.hs - testsuite/tests/typecheck/should_run/tcrun036.hs - utils/deriveConstants/Main.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f02322610e7b8b0f469bb283390f33… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f02322610e7b8b0f469bb283390f33… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][master] ghc-internal: Lock.hs: fix typo and indentation
by Marge Bot (＠marge-bot) 19 Jul '26

19 Jul '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: cbef021e by Artem Pelenitsyn at 2026-07-19T07:49:55-04:00 ghc-internal: Lock.hs: fix typo and indentation - - - - - 1 changed file: - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock.hs Changes: ===================================== libraries/ghc-internal/src/GHC/Internal/IO/Handle/Lock.hs ===================================== @@ -40,14 +40,14 @@ import GHC.Internal.IO.Handle.Lock.NoOp -- to interrupt it with asynchronous exceptions and/or for other threads to -- continue working, you MUST use threaded version of the runtime system. -- --- 2. The implementation uses relies on any of a number of locking --- facilities, depending upon what the platform supports: +-- 2. The implementation relies on any of a number of locking +-- facilities, depending upon what the platform supports: -- --- * 'LockFileEx' is used on Windows --- * On platforms that support it we use the @F_OFD_SETLK@ and @F_OFD_SETLKW@ @fnctl@s. --- * Otherwise we use @flock@ +-- * 'LockFileEx' is used on Windows +-- * On platforms that support it we use the @F_OFD_SETLK@ and @F_OFD_SETLKW@ @fnctl@s. +-- * Otherwise we use @flock@ -- --- hence all of their caveats also apply here. +-- All of their caveats also apply here. -- -- 3. On non-Windows platforms that don't support 'flock' (e.g. Solaris) this -- function throws 'FileLockingNotImplemented'. We deliberately choose to not View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/cbef021e37a8877a1d01023406b1a5d… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/cbef021e37a8877a1d01023406b1a5d… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][master] Fix failing test GcStaticPointers for non-moving GC
by Marge Bot (＠marge-bot) 19 Jul '26

19 Jul '26

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 42918646 by Duncan Coutts at 2026-07-19T07:50:36-04:00 Fix failing test GcStaticPointers for non-moving GC Minor mistake in asserting something before checking for that same thing. Specifically, Bdescr asserts HEAP_ALLOCED_GC, but Bdescr was being used prior to a guard that checks HEAP_ALLOCED_GC. The solution is just to move the use of Bdescr after the guard. Thanks to Simon Jakobi for identifying the problem. - - - - - 1 changed file: - rts/sm/NonMovingMark.c Changes: ===================================== rts/sm/NonMovingMark.c ===================================== @@ -2018,8 +2018,10 @@ bool nonmovingTidyWeaks (struct MarkQueue_ *queue) // See Note [Weak pointer processing and the non-moving GC] in // MarkWeak.c - bdescr *key_bd = Bdescr((StgPtr) w->key); - bool key_in_nonmoving = HEAP_ALLOCED_GC(w->key) && block_get_flags(key_bd) & BF_NONMOVING; + bool key_in_nonmoving = + HEAP_ALLOCED_GC(w->key) && + block_get_flags(Bdescr((StgPtr) w->key)) & BF_NONMOVING; + if (!key_in_nonmoving || nonmovingIsNowAlive(w->key)) { nonmovingMarkLiveWeak(queue, w); did_work = true; View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/42918646169c7c5ba61912b39b5f514… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/42918646169c7c5ba61912b39b5f514… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc][wip/rts-fix-ccid-type] rts: always use StgInt to represent cost center id
by Cheng Shao (＠TerrorJack) 19 Jul '26

19 Jul '26

Cheng Shao pushed to branch wip/rts-fix-ccid-type at Glasgow Haskell Compiler / GHC Commits: 303b1a90 by Cheng Shao at 2026-07-19T11:06:00+00:00 rts: always use StgInt to represent cost center id Currently cost center id is modeled as `Int` and it should be `StgInt` uniformly in the RTS, hence this patch. Fixes #27524. - - - - - 5 changed files: - rts/Profiling.c - rts/Trace.c - rts/Trace.h - rts/eventlog/EventLog.c - rts/eventlog/EventLog.h Changes: ===================================== rts/Profiling.c ===================================== @@ -44,9 +44,9 @@ static Arena *prof_arena; * closure_cats */ -static unsigned int CC_ID = 1; -static unsigned int CCS_ID = 1; -static unsigned int DUMPED_CC_ID = 0; // we have dumped all CCs up to this id to the eventlog +static StgInt CC_ID = 1; +static StgInt CCS_ID = 1; +static StgInt DUMPED_CC_ID = 0; // we have dumped all CCs up to this id to the eventlog /* Globals for opening the profiling log file(s) */ ===================================== rts/Trace.c ===================================== @@ -757,7 +757,7 @@ void traceIPE(const InfoProvEnt *ipe) } #if defined(PROFILING) -void traceHeapProfCostCentre(StgWord32 ccID, +void traceHeapProfCostCentre(StgInt ccID, const char *label, const char *module, const char *srcloc, ===================================== rts/Trace.h ===================================== @@ -376,7 +376,7 @@ void traceHeapBioProfSampleBegin(StgInt era, StgWord64 time); void traceHeapProfSampleEnd(StgInt era); void traceHeapProfSampleString(const char *label, StgWord residency); #if defined(PROFILING) -void traceHeapProfCostCentre(StgWord32 ccID, +void traceHeapProfCostCentre(StgInt ccID, const char *label, const char *module, const char *srcloc, ===================================== rts/eventlog/EventLog.c ===================================== @@ -1312,7 +1312,7 @@ void postHeapProfSampleString(const char *label, } #if defined(PROFILING) -void postHeapProfCostCentre(StgWord32 ccID, +void postHeapProfCostCentre(StgInt ccID, const char *label, const char *module, const char *srcloc, ===================================== rts/eventlog/EventLog.h ===================================== @@ -181,7 +181,7 @@ void postHeapProfSampleString(const char *label, StgWord64 residency); #if defined(PROFILING) -void postHeapProfCostCentre(StgWord32 ccID, +void postHeapProfCostCentre(StgInt ccID, const char *label, const char *module, const char *srcloc, View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/303b1a902308827f79bdb275d22fb6f… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/303b1a902308827f79bdb275d22fb6f… You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc] Pushed new branch wip/rts-fix-ccid-type
by Cheng Shao (＠TerrorJack) 19 Jul '26

19 Jul '26

Cheng Shao pushed new branch wip/rts-fix-ccid-type at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/rts-fix-ccid-type You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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[Git][ghc/ghc] Pushed new branch wip/andreask/fix_ghcid
by Andreas Klebinger (＠AndreasK) 19 Jul '26

19 Jul '26

Andreas Klebinger pushed new branch wip/andreask/fix_ghcid at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/andreask/fix_ghcid You're receiving this email because of your account on gitlab.haskell.org. Manage all notifications: https://gitlab.haskell.org/-/profile/notifications | Help: https://gitlab.haskell.org/help

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