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85b10c00
by Alan Zimmerman at 2026-07-31T22:09:47+01:00
EPA: Remove LocatedP from OverlapMode
We have
type LocatedP = GenLocated SrcSpanAnnP
type SrcSpanAnnP = EpAnn AnnPragma
As the first step in removing this in favour of LocatedA which only
captures location, comments and trailing annotations, we remove it
from OverlapMode
We do this by moving the AnnPragma into the TTG extension point
instead.
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c9a34a00
by Viktor Dukhovni at 2026-08-02T04:34:17-04:00
Fix note typo
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4f2a21f7
by Andreas Klebinger at 2026-08-02T22:46:46-04:00
Apply oneShot Monad trick to STG LintM
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21e4b89d
by Andreas Klebinger at 2026-08-02T22:46:46-04:00
stgLint: Use a single reader env for read only arguments.
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d415f38a
by Alan Zimmerman at 2026-08-02T22:47:27-04:00
EPA: Remove LocatedP from CType
The next step of removing use of LocatedP by moving
the AnnPragma for CType into its TTG extension point
instead.
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8fc6f882
by Simon Jakobi at 2026-08-05T14:53:41-04:00
testsuite: Don't crash on non-UTF-8 test output
read_stdout, read_stderr_for, read_comp_stderr and read_diff decoded
strictly (the first three with UTF-8, read_diff with the locale
encoding), so a test emitting invalid UTF-8 (binary output, or a crash
truncating a multi-byte character) raised UnicodeDecodeError and was
reported as a framework failure instead of its actual result.
Decode with errors='replace', like read_no_crs and safe_print.
Assisted-by: Claude Fable 5
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56534866
by Simon Jakobi at 2026-08-05T14:53:41-04:00
testsuite: Colorize the test summary, also in CI
The summary headings were plain, and SUMMARY was colored unconditionally,
so the escapes also ended up in the file written by --summary-file.
Color is now decided per output sink via term_color.colored_if; see the
comments in term_color.
CI logs are not a tty, but GitLab's log viewer renders ANSI colors, so
add --force-colors and pass it in .gitlab/ci.sh.
Assisted-by: Claude Opus 5
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bceb541a
by Simon Jakobi at 2026-08-05T14:53:42-04:00
testsuite: Repeat unexpected failure output in the summary
Finding out why a test failed meant scrolling back through a possibly
very long log to the point where the test ran. The summary now repeats
the captured output of unexpected failures, before the statistics, so
the most interesting part is at the end of the log (#16720).
Output mismatches report their diff instead of the mismatching stream
(see Note [Redundant output in test results]). The repeated output is
bounded per stream, and skipped altogether beyond
MAX_SUMMARY_OUTPUT_TESTS failure blocks. Tests failing identically in
several ways share one block.
Test results now report a source-relative directory, stable regardless
of where the run was started from.
Assisted-by: Claude Fable 5
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2ab02c57
by Ben Gamari at 2026-08-05T14:54:24-04:00
base: Don't drop exception context in SomeException(toException)
For reasons that are lost to time, the implementation of [CLC #200]
that was merged inappropriately dropped `ExceptionContext` in the
`toException` implementation given to `SomeException`.
Fix this infelicity.
[CLC #200]: https://github.com/haskell/core-libraries-committee/issues/200
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126ce574
by Vladislav Zavialov at 2026-08-05T14:55:05-04:00
Test case for #20902
Starting with GHC 9.14.1 (the first major release to include 51e3ec83),
and from point releases GHC 9.10.2 and GHC 9.12.3 (backports cc4470be68
and b30f25591e), all examples in this ticket are handled as expected.
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b14d8d59
by Alan Zimmerman at 2026-08-05T14:55:46-04:00
EPA: Remove LocatedP, last use in WarningTxt
The last step of removing LocatedP, by moving the AnnPragma for
WarningTxt into its TTG extension point instead.
This also allows us to remove LocatedP and SrcSpanAnnP
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70b58c8f
by Vladislav Zavialov at 2026-08-05T14:56:27-04:00
Test cases for #18725
Starting with GHC 9.4 (the first release to include 268efcc9a4), the program in
this ticket no longer panics. A standalone kind signature breaks the recursive
loop, so the type constructor can be used in a kind within its own group.
T18725a checks that this is accepted with the signature present, while T18725b
confirms it is still rejected without it.
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b18c8dd5
by Zubin Duggal at 2026-08-06T15:51:01-04:00
hie files: Dump the type table when dumping with -ddump-hie
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f839d0fb
by Zubin Duggal at 2026-08-06T15:51:01-04:00
hie files: Take evidence for quantified constraints into account when saving evidence terms to the hie ast
Fixes #25709
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5753ebaa
by Simon Jakobi at 2026-08-06T15:51:43-04:00
testsuite: fix stale paths for the ghc-config build artifacts
ghc-config.hs moved from testsuite/mk/ to testsuite/ghc-config/ in
6c7a49139c, but the .gitignore entry and the clean rule still referred to
the old location. As a result the compiled ghc-config binary, which
boilerplate.mk rebuilds on every make-driven test run, showed up as an
untracked file and was never cleaned.
Assisted-by: Claude Opus 5
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246d4d72
by Simon Peyton Jones at 2026-08-06T15:52:25-04:00
Documentation only
...driven by my investigation of #27591
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be69e9df
by Alan Zimmerman at 2026-08-06T15:53:05-04:00
EPA: Replace AnnPragma with individual types
We introduced AnnPragma as a common type for all pragma usages wrapped
in LocatedP / SrcSpanAnnP. Now that those are gone, and the AnnPragma
moved into the TTG points for the given items, we can ensure that each
carries only the annotations it needs.
So we remove AnnPragma, and in its place bring in
AnnCType
AnnWarningTxt
AnnOverlap
AnnAnnDecl
AnnPragSCC
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98f91999
by Vladislav Zavialov at 2026-08-06T20:00:30+00:00
Discard type arguments in tcPatToExpr (#27440, #27583)
The builder expression of an implicitly bidirectional pattern synonym must not
mention types written in the RHS:
* Invisible type arguments led to a panic (#27440)
* Required type arguments failed with out-of-scope variables (#27583)
Both are now discarded, following the precedent established by pattern
signatures (#9867).
Discarding type arguments takes some care: a type pattern cannot be told from a
value pattern by syntax alone, as the `type` keyword may be omitted. Consider:
data T a b c where
MkT :: forall a. forall b c -> a -> T a b c
pattern P :: x -> T x y z
pattern P x = MkT @a (type b) c x
In P's right-hand side, `@a` and `type b` are clearly type arguments, but what
about `c` and `x`? We can only tell by matching the patterns against MkT's
type. So tcPatToExpr now runs in TcM and matches the arguments against the
constructor's TyVarBinders using zipPatsBndrs, which is made public for this
purpose. The resulting builder is $bP x = MkT _ _ x.
See Note [Discarding types in the builder expression].
Test cases: T27440a T27440b T27440c T27440d T27440e
T27583a T27583b T27583c T27583d T27583e T27583f T27583g
Assisted-by: Claude Opus 5