[all-commits] [llvm/llvm-project] b43c26: Restore GNU , ## __VA_ARGS__ behavior in MSVC mode

[Harald van Dijk via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b43c26d036dcbf7a6881f39e4434cf059364022a
      https://github.com/llvm/llvm-project/commit/b43c26d036dcbf7a6881f39e4434cf059364022a
  Author: Harald van Dijk <harald at gigawatt.nl>
  Date:   2021-01-25 (Mon, 25 Jan 2021)

  Changed paths:
    M clang/lib/Lex/TokenLexer.cpp
    M clang/test/Preprocessor/macro_fn_comma_swallow2.c

  Log Message:
  -----------
  Restore GNU , ## __VA_ARGS__ behavior in MSVC mode

As noted in D91913, MSVC implements the GNU behavior for
, ## __VA_ARGS__ as well. Do the same when `-fms-compatibility` is used.

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D95392