[all-commits] [llvm/llvm-project] ba9eaf: Update __cplusplus for C++23, add C++23 diag group...

[Erich Keane via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba9eaf59a8a3bb0713956da3bfb3492669971a62
      https://github.com/llvm/llvm-project/commit/ba9eaf59a8a3bb0713956da3bfb3492669971a62
  Author: Erich Keane <erich.keane at intel.com>
  Date:   2023-05-15 (Mon, 15 May 2023)

  Changed paths:
    M clang/include/clang/Basic/DiagnosticGroups.td
    M clang/lib/Frontend/InitPreprocessor.cpp
    M clang/test/Preprocessor/init.c

  Log Message:
  -----------
  Update __cplusplus for C++23, add C++23 diag group alias.

This came up during the C++26 flag discussion, so split this out into a
separate patch.