[Git][ghc/ghc][wip/T16762-chunks-2-and-3] 6 commits: Add test for #16167

[Ryan Scott]

Ryan Scott pushed to branch wip/T16762-chunks-2-and-3 at Glasgow Haskell Compiler / GHC


Commits:
9d97f4b5 by nineonine at 2020-05-08T15:30:03-04:00
Add test for #16167

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aa318338 by Ryan Scott at 2020-05-08T15:30:04-04:00
Bump exceptions submodule so that dist-boot is .gitignore'd

`exceptions` is a stage-0 boot library as of commit
30272412fa437ab8e7a8035db94a278e10513413, which means that building
`exceptions` in a GHC tree will generate a `dist-boot` directory.
However, this directory was not specified in `exceptions`'
`.gitignore` file, which causes it to dirty up the current `git`
working directory.

Accordingly, this bumps the `exceptions` submodule to commit
ghc/packages/exceptions at 23c0b8a50d7592af37ca09beeec16b93080df98f,
which adds `dist-boot` to the `.gitignore` file.

- - - - -
ea86360f by Ömer Sinan Ağacan at 2020-05-08T15:30:30-04:00
Linker.c: initialize n_symbols of ObjectCode with other fields

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951c1fb0 by Sylvain Henry at 2020-05-09T21:46:38-04:00
Fix unboxed-sums GC ptr-slot rubbish value (#17791)

This patch allows boot libraries to use unboxed sums without implicitly
depending on `base` package because of `absentSumFieldError`.

See updated Note [aBSENT_SUM_FIELD_ERROR_ID] in GHC.Core.Make

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b352d63c by Ben Gamari at 2020-05-09T21:47:14-04:00
rts: Make non-existent linker search path merely a warning

As noted in #18105, previously this resulted in a rather intrusive error
message. This is in contrast to the general expectation that search
paths are merely places to look, not places that must exist.

Fixes #18105.

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e77ceadc by Ryan Scott at 2020-05-12T07:13:53-04:00
Factor out HsPatSigType for pat sigs/RULE term sigs (#16762)

This implements chunks (2) and (3) of
https://gitlab.haskell.org/ghc/ghc/issues/16762#note_270170. Namely,
it introduces a dedicated `HsPatSigType` AST type, which represents
the types that can appear in pattern signatures and term-level `RULE`
binders. Previously, these were represented with `LHsSigWcType`.
Although `LHsSigWcType` is isomorphic to `HsPatSigType`, the intended
semantics of the two types are slightly different, as evidenced by
the fact that they have different code paths in the renamer and
typechecker.

See also the new `Note [Pattern signature binders and scoping]` in
`GHC.Hs.Types`.

- - - - -


30 changed files:

- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Extension.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Rule.hs
- compiler/GHC/ThToHs.hs
- includes/stg/MiscClosures.h
- libraries/base/Control/Exception/Base.hs
- libraries/exceptions
- + libraries/ghc-prim/GHC/Prim/Panic.hs
- libraries/ghc-prim/ghc-prim.cabal
- rts/Exception.cmm
- rts/Linker.c
- rts/Prelude.h
- rts/RtsStartup.c
- rts/RtsSymbols.c


The diff was not included because it is too large.


View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/2c845e8579d22f4d6aed8a8eb8e22e4f1ed5ec28...e77ceadc78375fcdb81b94f559328af0dca95cb1

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View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/2c845e8579d22f4d6aed8a8eb8e22e4f1ed5ec28...e77ceadc78375fcdb81b94f559328af0dca95cb1
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