Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC

Commits:

• f566ef8d
  by Ilias Tsitsimpis at 2026-03-03T17:24:37-05:00

  Fix determinism of linker arguments
  
  The switch from Data.Map to UniqMap in 3b5be05ac29 introduced
  non-determinism in the order of packages passed to the linker.
  
  This resulted in non-reproducible builds where the DT_NEEDED entries in
  dynamic libraries were ordered differently across builds.
  
  Fix the regression by explicitly sorting the package list derived from
  UniqMap.
  
  Fixes #26838
  

• 2203290e
  by Matthew Pickering at 2026-03-03T17:24:39-05:00

  determinism: Use a deterministic renaming when writing bytecode files
  
  Now when writing the bytecode file, a counter and substitution are used
  to provide deterministic keys to local variables (rather than relying on
  uniques). This change ensures that `.gbc` are produced
  deterministically.
  
  Fixes #26499
  

• 486be4f5
  by Teo Camarasu at 2026-03-03T17:24:41-05:00

  ghc-internal: delete Version hs-boot loop
  
  Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module.
  
  Resolves #26940
  

• f821a13a
  by Wolfgang Jeltsch at 2026-03-03T17:24:43-05:00

  Remove in-package dependencies on `GHC.Internal.System.IO`
  
  This contribution eliminates all dependencies on
  `GHC.Internal.System.IO` from within `ghc-internal`. It comprises the
  following changes:
  
    * Make `GHC.Internal.Fingerprint` independent of I/O support
    * Tighten the dependencies of `GHC.Internal.Data.Version`
    * Tighten the dependencies of `GHC.Internal.TH.Monad`
    * Tighten the dependencies of `GHCi.Helpers`
    * Move some code that needs `System.IO` to `template-haskell`
    * Move the `GHC.ResponseFile` implementation into `base`
    * Move the `System.Exit` implementation into `base`
    * Move the `System.IO.OS` implementation into `base`
  
  Metric Decrease:
      size_hello_artifact
      size_hello_artifact_gzip
      size_hello_unicode
      size_hello_unicode_gzip
  

• 8d92fe4f
  by Sylvain Henry at 2026-03-03T17:24:50-05:00

  Linker: implement support for COMMON symbols (#6107)
  
  Add some support for COMMON symbols. We don't support common symbols
  having different sizes where the larger one is allocated after the
  smaller one. The linker will fail with an appropriate error message if
  it happens.
  

• 81fbfd8e
  by Cheng Shao at 2026-03-03T17:24:51-05:00

  compiler: fix redundant import of GHC.Hs.Lit
  
  This patch removes a redundant import of `GHC.Hs.Lit` which causes a
  ghc build failure with validate flavours when bootstrapping from 9.14.
  Fixes #26972.
  

• 7f3b4c82
  by Cheng Shao at 2026-03-03T17:24:52-05:00

  compiler: avoid unneeded traversals in GHC.Unit.State
  
  Following !15591, this patch avoids unneeded traversals in
  `reportCycles`/`reportUnusable` when log verbosity is below given
  threshold. Also applies `logVerbAtLeast` when appropriate.
  
  Co-authored-by: Codex <codex@openai.com>
  

• 055d8652
  by Cheng Shao at 2026-03-03T17:24:53-05:00

  ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool
  
  This patch fixes redundant import in
  `GHC.Internal.Event.Windows.ManagedThreadPool` that causes a
  compilation error when building windows target with validate flavours
  and bootstrapping from 9.14. Fixes #26976.
  

35 changed files:

• compiler/GHC/ByteCode/Serialize.hs
• compiler/GHC/Hs/Type.hs
• compiler/GHC/Unit/State.hs
• compiler/GHC/Utils/Error.hs
• libraries/base/src/GHC/Fingerprint.hs
• libraries/base/src/GHC/ResponseFile.hs
• libraries/base/src/GHC/Unicode.hs
• libraries/base/src/System/Exit.hs
• libraries/base/src/System/IO/OS.hs
• libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
• libraries/ghc-internal/ghc-internal.cabal.in
• libraries/ghc-internal/src/GHC/Internal/Data/Version.hs
• − libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot
• libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs
• libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs
• libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs
• − libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs
• − libraries/ghc-internal/src/GHC/Internal/System/Exit.hs
• − libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs
• libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs
• libraries/ghc-internal/src/GHC/Internal/Unicode.hs
• libraries/ghc-internal/src/GHC/Internal/Unicode/Version.hs
• libraries/ghc-internal/tools/ucd2haskell/exe/UCD2Haskell/ModuleGenerators.hs
• libraries/template-haskell/Language/Haskell/TH/Syntax.hs
• rts/Linker.c
• rts/LinkerInternals.h
• rts/linker/Elf.c
• rts/linker/MachO.c
• rts/linker/PEi386.c
• testsuite/tests/rts/linker/Makefile
• + testsuite/tests/rts/linker/T6107.hs
• + testsuite/tests/rts/linker/T6107.stdout
• + testsuite/tests/rts/linker/T6107_sym1.s
• + testsuite/tests/rts/linker/T6107_sym2.s
• testsuite/tests/rts/linker/all.T

The diff was not included because it is too large.