[PATCH] D122224: Allow -Wno-gnu to silence GNU extensions related to pointer arithmetic

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman created this revision.
aaron.ballman added reviewers: nickdesaulniers, andrew.w.kaylor, eli.friedman, erichkeane.
Herald added a project: All.
aaron.ballman requested review of this revision.
Herald added a project: clang.

These diagnostics were added to a diagnostic group, but that diagnostic group was not under `-Wgnu`. I've now split them into their own diagnostic group that is added both to the original group (so user's currently opting in or out of these should not see a change) and under the `-Wgnu` group so that `-Wno-gnu` can be used to disable all GNU extension diagnostics. This fixes Issue 54444.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122224

Files:
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/DiagnosticGroups.td
  clang/include/clang/Basic/DiagnosticSemaKinds.td
  clang/test/Sema/pointer-addition.c

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