[all-commits] [llvm/llvm-project] 94e8bd: [clang] Fix crash upon stray coloncolon token in C...

[inclyc via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 94e8bd002c81ace308ddac9b66385ef932655fd3
      https://github.com/llvm/llvm-project/commit/94e8bd002c81ace308ddac9b66385ef932655fd3
  Author: Jialun Hu <jialun_hu at apple.com>
  Date:   2022-10-18 (Tue, 18 Oct 2022)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Parse/Parser.h
    M clang/lib/Parse/ParseDecl.cpp
    M clang/lib/Parse/Parser.cpp
    M clang/test/Parser/c2x-attributes.c

  Log Message:
  -----------
  [clang] Fix crash upon stray coloncolon token in C2x mode

The parser assumes that the lexer never emits coloncolon token for C code, but this assumption no longer holds in C2x attribute namespaces. As a result, stray coloncolon tokens out of attributes cause assertion failures and hangs in release build, which this patch tries to handle.

Crash input minimal example: `T n::v`

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D133248