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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Adam Gundry pushed to branch wip/amg/warning-categories at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6928d7c2bf055116afbdbfcfc3beaa5f321123cb">6928d7c2</a></strong>
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<span> by Adam Gundry </span> <i> at 2023-03-23T08:51:13+00:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Allow WARNING pragmas to be controlled with custom categories
Closes #17209. This implements GHC Proposal 541, allowing a WARNING
pragma to be annotated with a category like so:
{-# WARNING in "x-partial" head "This function is undefined on empty lists." #-}
The user can then enable, disable and set the severity of such warnings
using command-line flags `-Wx-partial`, `-Werror=x-partial` and so on. There
is a new warning group `-Wextended-warnings` containing all these warnings.
Warnings without a category are treated as if the category was `deprecations`,
and are (still) controlled by the flags `-Wdeprecations`
and `-Wwarnings-deprecations`.
Updates Haddock submodule.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/07e0a5cadb9daad97815ba587b7a105925c978fc">07e0a5ca</a></strong>
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<span> by Adam Gundry </span> <i> at 2023-03-23T08:51:13+00:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Move mention of warning groups change to 9.8.1 release notes
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30 changed files:
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compiler/GHC/Driver/Config/Diagnostic.hs
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compiler/GHC/Driver/Flags.hs
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compiler/GHC/Driver/Session.hs
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compiler/GHC/Hs/Decls.hs
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compiler/GHC/Parser.y
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compiler/GHC/Parser/HaddockLex.x
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compiler/GHC/Rename/Names.hs
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compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Gen/Export.hs
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compiler/GHC/Types/Error.hs
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compiler/GHC/Types/Error/Codes.hs
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compiler/GHC/Unit/Module/Warnings.hs
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compiler/GHC/Utils/Error.hs
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docs/users_guide/9.8.1-notes.rst
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docs/users_guide/exts/pragmas.rst
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testsuite/tests/warnings/should_fail/WarningCategory1.hs
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