[PATCH] D124534: Add a warning diagnostic for line directive of a gnu extension

[Ken Matsui via Phabricator via cfe-commits]

ken-matsui added a comment.

This change is related to: https://github.com/llvm/llvm-project/issues/55067


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124534/new/

https://reviews.llvm.org/D124534