[all-commits] [llvm/llvm-project] 1c68e0: [clang][ptrauth] reject incorrectly placed ptrauth...

[Oliver Hunt via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 1c68e0e4814e7e0f006a238e1c656c78aa10516b
      https://github.com/llvm/llvm-project/commit/1c68e0e4814e7e0f006a238e1c656c78aa10516b
  Author: Oliver Hunt <oliver at apple.com>
  Date:   2025-05-03 (Sat, 03 May 2025)

  Changed paths:
    M clang/include/clang/Parse/Parser.h
    M clang/lib/Parse/ParseDecl.cpp
    M clang/lib/Parse/ParseDeclCXX.cpp
    A clang/test/Sema/ptrauth-struct-function-ptr-field.c

  Log Message:
  -----------
  [clang][ptrauth] reject incorrectly placed ptrauth qualifier (#138376)

When parsing a function pointer typed field we use
Parser::ParseTypeQualifierListOpt, but then drops subsequent type
attributes and qualifiers unless explicitly handled.

There is an existing solution for the _Atomic qualifier, and this PR
simply extends that to __ptrauth for now. In future we may want to
investigate a more robust mechanism to ensure type qualifiers are not
silently dropped so that future type qualifiers do not suffer the same
problem.



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