tree 28b3fe6f699647511cef8ef915793ef367f6ee23
parent 3d4f979e271d2a1fe0906f4d1b16db108838f98f
author Aaron Ballman <aaron@aaronballman.com> 1746184802 -0400
committer GitHub <noreply@github.com> 1746184802 -0400
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[C] Diagnose use of C++ keywords in C (#137234)

This adds a new diagnostic group, -Wc++-keyword, which is off by default
and grouped under -Wc++-compat. The diagnostic catches use of C++
keywords in C code.

This change additionally fixes an issue with -Wreserved-identifier not
diagnosing use of reserved identifiers in function parameter lists in a
function declaration which is not a definition.

Fixes https://github.com/llvm/llvm-project/issues/21898