[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 4 commits: testsuite: 21651 add test for closeFdWith + setNumCapabilities

[Marge Bot (@marge-bot)]

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


Commits:
df61652c by Douglas Wilson at 2022-08-10T03:51:39-04:00
testsuite: 21651 add test for closeFdWith + setNumCapabilities

This bug does not affect windows, which does not use the
base module GHC.Event.Thread.

- - - - -
d46fe18b by Douglas Wilson at 2022-08-10T03:51:39-04:00
base: Fix races in IOManager (setNumCapabilities,closeFdWith)

Fix for #21651

Fixes three bugs:

- writes to eventManager should be atomic. It is accessed concurrently by ioManagerCapabilitiesChanged and closeFdWith.
- The race in closeFdWith described in the ticket.
- A race in getSystemEventManager where it accesses the 'IOArray' in
  'eventManager' before 'ioManagerCapabilitiesChanged' has written to
  'eventManager', causing an Array Index exception. The fix here is to
  'yield' and retry.

- - - - -
2e27ca42 by Trevis Elser at 2022-08-10T03:51:44-04:00
Updates language extension documentation

Adding a 'Status' field with a few values:
- Deprecated
- Experimental
- InternalUseOnly
- Noting if included in 'GHC2021', 'Haskell2010' or 'Haskell98'

Those values are pulled from the existing descriptions or elsewhere in
the documentation.

While at it, include the :implied by: where appropriate, to provide
more detail.

Fixes #21475

- - - - -
5c8dd6ff by Jens Petersen at 2022-08-10T03:51:48-04:00
hadrian RunRest: add type signature for stageNumber

avoids warning seen on 9.4.1:

src/Settings/Builders/RunTest.hs:264:53: warning: [-Wtype-defaults]
    • Defaulting the following constraints to type ‘Integer’
        (Show a0)
          arising from a use of ‘show’
          at src/Settings/Builders/RunTest.hs:264:53-84
        (Num a0)
          arising from a use of ‘stageNumber’
          at src/Settings/Builders/RunTest.hs:264:59-83
    • In the second argument of ‘(++)’, namely
        ‘show (stageNumber (C.stage ctx))’
      In the second argument of ‘($)’, namely
        ‘"config.stage=" ++ show (stageNumber (C.stage ctx))’
      In the expression:
        arg $ "config.stage=" ++ show (stageNumber (C.stage ctx))
    |
264 |             , arg "-e", arg $ "config.stage="    ++ show (stageNumber (C.stage ctx))
    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

compilation tested locally

- - - - -


30 changed files:

- docs/users_guide/bugs.rst
- docs/users_guide/exts/binary_literals.rst
- docs/users_guide/exts/constrained_class_methods.rst
- docs/users_guide/exts/constraint_kind.rst
- docs/users_guide/exts/datatype_contexts.rst
- docs/users_guide/exts/deriving_extra.rst
- docs/users_guide/exts/duplicate_record_fields.rst
- docs/users_guide/exts/empty_case.rst
- docs/users_guide/exts/empty_data_deriving.rst
- docs/users_guide/exts/existential_quantification.rst
- docs/users_guide/exts/explicit_forall.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/ffi.rst
- docs/users_guide/exts/field_selectors.rst
- docs/users_guide/exts/flexible_contexts.rst
- docs/users_guide/exts/functional_dependencies.rst
- docs/users_guide/exts/gadt_syntax.rst
- docs/users_guide/exts/generics.rst
- docs/users_guide/exts/hex_float_literals.rst
- docs/users_guide/exts/import_qualified_post.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/exts/kind_signatures.rst
- docs/users_guide/exts/let_generalisation.rst
- docs/users_guide/exts/linear_types.rst
- docs/users_guide/exts/multi_param_type_classes.rst
- docs/users_guide/exts/newtype_deriving.rst
- docs/users_guide/exts/nk_patterns.rst
- docs/users_guide/exts/nullary_type_classes.rst
- docs/users_guide/exts/nullary_types.rst
- docs/users_guide/exts/numeric_underscores.rst


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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/051628b4589e0c5e8bae78aaa7698201a5f1071d...5c8dd6ffcf2d07c626a652153aac8613e823d2fb

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