[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 8 commits: Remove TcRnDeprecatedInvisTyArgInConPat mechanism

[Marge Bot (@marge-bot)]

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


Commits:
5b4774f9 by sheaf at 2024-12-03T15:22:07+01:00
Remove TcRnDeprecatedInvisTyArgInConPat mechanism

The combination of ScopedTypeVariables + TypeApplications now no longer
enables the use of type applications in constructor patterns, as per
GHC proposal #448.

This completes the deprecation that begun with GHC 9.8.

We also remove the -Wdeprecated-type-abstractions flag, which was
introduced in GHC 9.10.

- - - - -
b2919344 by sheaf at 2024-12-03T13:09:19-05:00
Hadrian: use / when making filepaths absolute

In Hadrian, we are careful to use -/- rather than </>, in order to use
/ instead of \ in filepaths. However, this gets ruined by the use of
makeAbsolute from System.Directory, which, on Windows, changes back
forward slashes to backslashes.

- - - - -
f50662b6 by Ben Gamari at 2024-12-03T13:09:19-05:00
rts/linker: Fix out-of-bounds mapping logic

Previously the structure of `mmapInRegion` concealed a subtle bug
concerning handling of `mmap` returning mappings below the beginning of
the desired region. Specifically, we would reset `p = result + bytes`
and then again reset `p = region->start` before looping around for
another iteration. This resulted in an infinite loop on FreeBSD.

Fixes #25492.

- - - - -
19ea46f2 by Ben Gamari at 2024-12-03T13:09:19-05:00
rts/linker: Clarify debug output

- - - - -
39d7006e by Simon Hengel at 2024-12-03T13:09:21-05:00
SysTools: Avoid race conditions when processing output (fixes #16450)

- - - - -
63f152c2 by Rodrigo Mesquita at 2024-12-03T13:09:22-05:00
mg: Drop unnecessary HasCallStack

This HasCallStack was a debugging artifact from a previous commit.

- - - - -
21a67126 by Rodrigo Mesquita at 2024-12-03T13:09:22-05:00
Improve haddock of graphReachabilityCyclic

- - - - -
eb1d0fec by Rodrigo Mesquita at 2024-12-03T13:09:22-05:00
Refactor ModuleGraph interface

The 'ModuleGraph' abstraction represents the relationship and strucutre
of the modules being compiled. This structure is meant to be constructed
once at the start of compilation, and never changed again.

However, it's exposed interface was confusing and exposed too many
footguns which led to inneficient usages of the ModuleGraph. This commit
improves significantly the exported interface of ModuleGraph, taking
into consideration the recent improvements around reachability queries.

Since the ModuleGraph graphs and related structures (HPT, EPS) are
performance critical in the sense that somewhat simple mistakes can
cause bad leaks and non-linear memory usage, we want to have proper APIs
that guide efficient usage. This is a good step in that direction.

- - - - -


30 changed files:

- compiler/GHC.hs
- compiler/GHC/Data/Graph/Directed/Reachability.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/SysTools/Process.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/using-warnings.rst
- hadrian/src/Hadrian/Utilities.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Ghc.hs
- rts/Linker.c
- rts/linker/MMap.c
- testsuite/tests/ghc-api/downsweep/OldModLocation.hs
- testsuite/tests/ghc-api/downsweep/PartialDownsweep.hs
- testsuite/tests/ghci/scripts/ghci024.stdout
- testsuite/tests/ghci/scripts/ghci024.stdout-mingw32
- testsuite/tests/rename/should_fail/Or3.hs
- testsuite/tests/rename/should_fail/Or3.stderr
- testsuite/tests/rename/should_fail/T22478b.hs


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7bbfb403f258b1dab38771036df3b77238f18dbc...eb1d0fec7fa98dce41af0e812c9ada22ea1a6523

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7bbfb403f258b1dab38771036df3b77238f18dbc...eb1d0fec7fa98dce41af0e812c9ada22ea1a6523
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