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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" style="color: #1068bf;">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/294cf3781eef40635ef1d60d1fe7199e505acee1" style="color: #1068bf;">294cf378</a></strong>
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<span> by Adam Gundry </span> <i> at 2023-01-17T08:57:26+00:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "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: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>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 {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`.
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30 changed files:
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compiler/GHC/Driver/Config/Diagnostic.hs
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