Zubin pushed to branch wip/10.0.1-backports at Glasgow Haskell Compiler / GHC Commits: cc79cc62 by Zubin Duggal at 2026-09-16T18:28:37+05:30 ghc-internal: annotateSTM should use catchSTM# rather than catch# A catch# frame inside a transaction breaks retry and async exception delivery. Fixes #27657 (cherry picked from commit fd22f71ee92595f4634206455d8eab111488d836) - - - - - 916a4f04 by Ian-Woo Kim at 2026-09-16T19:06:38+05:30 Make the order of usages deterministic It has been observed that the ordering of usages can be non-determinstic in parallel builds. Therefore, this contribution introduces sorting of usages based on a platform- and race-independent sorting criterion. Resolves #26877. Co-authored-by: Wolfgang Jeltsch <wolfgang@well-typed.com> (cherry picked from commit d216412babfd5b5746365f0686ec370fb0892ec7) - - - - - a3f4ed4c by mangoiv at 2026-09-16T19:06:38+05:30 compiler: refactor error reporting code for ExplicitLevelImports Refactors error reporting code for ExplicitLevelImports to pass in a RdrName and a GlobalReaderElt to be able to report errors that are faithful to the source and to more precisely distinguish between names that are in scope from different qualifications. Fixes #27385 and #26616 (cherry picked from commit 141986e3680a24b76e21a7ad4ce6290a7413c7f5) - - - - - be82ccef by Simon Jakobi at 2026-09-16T19:10:47+05:30 ci: Actually pass --ignore-perf-failures to the testsuite driver 684c0018d9 changed the IGNORE_PERF_FAILURES handling to append to RUNTEST_ARGS with bash array syntax, but the three use sites still expand RUNTEST_ARGS as a scalar, which yields only the first array element. The appended flag was therefore dropped in every job, so perf improvements kept failing Marge Bot batches and master pipelines, contrary to #19562. Append as a string instead, matching the existing --force-colors append in test_hadrian. Fixes #27563. Assisted-by: Claude Fable 5.1 (cherry picked from commit 4e9297ea064704da1606364365287ccf0039f7c2) - - - - - 3a434988 by Zubin Duggal at 2026-09-16T22:28:37+05:30 Prepare 10.0.1-alpha1 Metric Increase: T4801 Metric Decrease: CoOpt_Read InstanceMatching ManyAlternatives RecordUpdPerf T13719 T14683 T15164 T16577 T20261 T4801 T5321Fun T783 T9233 T9872b_defer - - - - - 154 changed files: - .gitlab/ci.sh - − changelog.d/27532 - − changelog.d/27626 - − changelog.d/27627 - − changelog.d/27703 - − changelog.d/27704 - − changelog.d/27717 - − changelog.d/T25636 - − changelog.d/T26423 - − changelog.d/T26716 - − changelog.d/T26978 - − changelog.d/T26979 - − changelog.d/T27046 - − changelog.d/T27047 - − changelog.d/T27121.md - − changelog.d/T27123.md - − changelog.d/T27124.md - − changelog.d/T27131 - − changelog.d/T27182.md - − changelog.d/T27202 - − changelog.d/T27225 - − changelog.d/T27308 - − changelog.d/T27314.md - − changelog.d/T27359 - − changelog.d/T27360 - − changelog.d/T27386 - − changelog.d/T27440 - − changelog.d/T27455 - − changelog.d/T27456 - − changelog.d/T27583 - − changelog.d/T27586 - − changelog.d/T27629 - − changelog.d/T27639 - − changelog.d/T27705 - − changelog.d/T27749 - − changelog.d/T27764 - − changelog.d/arm_ncg_fixes_T27430 - − changelog.d/bump-process - − changelog.d/dynamic-trace-flags - − changelog.d/fix-absent-dict-projection - − changelog.d/fix-blackhole-handling - − changelog.d/fix-cmm-atomic-load-store - − changelog.d/fix-compacting-gc-ap-27434 - − changelog.d/fix-compacting-gc-constr-27649 - − changelog.d/fix-control0-mask-trampoline - − changelog.d/fix-exponential-case-desugar-27383 - − changelog.d/fix-finalizers-27072 - − changelog.d/fix-layout-stack-fcall - − changelog.d/fix-parallel-gc-selector-race-27477 - − changelog.d/fix-peekitbl-no-tntc - − changelog.d/fix-threadlabel-segfault-27618 - − changelog.d/fix-use-std-ap-thunk - − changelog.d/ghc-pkg-faster-closure - − changelog.d/hadrian-stale-package-confs-26661 - − changelog.d/inter-module-far-jumps-aarch64-default - − changelog.d/ipe-event-class - − changelog.d/jobserver-leak-fix - − changelog.d/link-deterministic-order - − changelog.d/llvm-22 - − changelog.d/llvm-23 - − changelog.d/more-efficient-home-unit-imports-finding - − changelog.d/reexported-module-errors - − changelog.d/semaphore-v2 - − changelog.d/tag-inference-27005 - − changelog.d/tcplugin_init.md - − changelog.d/tcplugins-pmc.md - − changelog.d/typecheckModule-API.md - − changelog.d/unit-index - − changelog.d/unused-type - − changelog.d/wasm-fix-serviceworker - − changelog.d/windows-rethrow-overlapped-exception - − changelog.d/withTcPlugins.md - compiler/GHC/Hs/Expr.hs - compiler/GHC/HsToCore/Usage.hs - compiler/GHC/Rename/Env.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - compiler/GHC/Rename/Module.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Splice.hs - compiler/GHC/Rename/Splice.hs-boot - compiler/GHC/Rename/Unbound.hs - compiler/GHC/Tc/Errors.hs - compiler/GHC/Tc/Errors/Ppr.hs - compiler/GHC/Tc/Errors/Types.hs - compiler/GHC/Tc/Gen/Export.hs - compiler/GHC/Tc/Utils/Env.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Unit/Module/Deps.hs - docs/users_guide/10.0.1-notes.rst - docs/users_guide/exts/static_pointers.rst - docs/users_guide/runtime_control.rst - libraries/base/changelog.md - libraries/ghc-experimental/CHANGELOG.md - libraries/ghc-internal/CHANGELOG.md - libraries/ghc-internal/src/GHC/Internal/STM.hs - testsuite/tests/annotations/should_fail/annfail03.stderr - testsuite/tests/annotations/should_fail/annfail04.stderr - testsuite/tests/annotations/should_fail/annfail06.stderr - testsuite/tests/annotations/should_fail/annfail09.stderr - + testsuite/tests/concurrent/should_run/T27657a.hs - + testsuite/tests/concurrent/should_run/T27657a.stdout - + testsuite/tests/concurrent/should_run/T27657b.hs - + testsuite/tests/concurrent/should_run/T27657b.stdout - testsuite/tests/concurrent/should_run/all.T - testsuite/tests/ghci/T27532/Makefile - − testsuite/tests/ghci/T27532/T27532.stdout - − testsuite/tests/ghci/T27532/a.script - testsuite/tests/ghci/T27532/all.T - − testsuite/tests/ghci/T27532/b.script - testsuite/tests/quasiquotation/qq001/qq001.stderr - testsuite/tests/quasiquotation/qq002/qq002.stderr - testsuite/tests/quasiquotation/qq003/qq003.stderr - testsuite/tests/quasiquotation/qq004/qq004.stderr - testsuite/tests/quotes/LiftErrMsg.stderr - testsuite/tests/quotes/LiftErrMsgDefer.stderr - testsuite/tests/quotes/LiftErrMsgTyped.stderr - testsuite/tests/quotes/T10384.stderr - testsuite/tests/quotes/T5721.stderr - testsuite/tests/quotes/TH_localname.stderr - testsuite/tests/splice-imports/SI03.stderr - testsuite/tests/splice-imports/SI05.stderr - testsuite/tests/splice-imports/SI08.stderr - testsuite/tests/splice-imports/SI08_oneshot.stderr - testsuite/tests/splice-imports/SI16.stderr - testsuite/tests/splice-imports/SI18.stderr - testsuite/tests/splice-imports/SI20.stderr - testsuite/tests/splice-imports/SI25.stderr - testsuite/tests/splice-imports/SI28.stderr - testsuite/tests/splice-imports/SI29.stderr - testsuite/tests/splice-imports/SI31.stderr - testsuite/tests/splice-imports/SI36.stderr - testsuite/tests/splice-imports/T26088.stderr - testsuite/tests/splice-imports/T26090.stderr - + testsuite/tests/splice-imports/T26616.hs - + testsuite/tests/splice-imports/T26616.stderr - testsuite/tests/splice-imports/all.T - testsuite/tests/th/T16976z.stderr - testsuite/tests/th/T17820a.stderr - testsuite/tests/th/T17820b.stderr - testsuite/tests/th/T17820c.stderr - testsuite/tests/th/T17820d.stderr - testsuite/tests/th/T17820e.stderr - testsuite/tests/th/T21547.stderr - testsuite/tests/th/T23829_hasty.stderr - testsuite/tests/th/T23829_hasty_b.stderr - testsuite/tests/th/T23829_tardy.ghc.stderr - testsuite/tests/th/T26098_local.stderr - testsuite/tests/th/T26098_quote.stderr - testsuite/tests/th/T26098_splice.stderr - testsuite/tests/th/T26099.stderr - testsuite/tests/th/T26568.stderr - testsuite/tests/th/T5795.stderr The diff was not included because it is too large. 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