[all-commits] [llvm/llvm-project] 63a82d: [C11] Allow casting to an _Atomic-qualified type

[Aaron Ballman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 63a82dd4eb0c23dbd4277a5ce2d5bfeda836aa64
      https://github.com/llvm/llvm-project/commit/63a82dd4eb0c23dbd4277a5ce2d5bfeda836aa64
  Author: Aaron Ballman <aaron at aaronballman.com>
  Date:   2023-04-20 (Thu, 20 Apr 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaCast.cpp
    M clang/test/Sema/atomic-expr.c

  Log Message:
  -----------
  [C11] Allow casting to an _Atomic-qualified type

We were failing to strip off atomic qualification when forming the cast
destination type, but properly stripping off cvr qualification. Now we
accept atomic, qualified, or unqualified destination types.

Note: the semantics of the cast still drop the qualifier, so such a
cast does not result in an atomic rvalue.

Fixes https://github.com/llvm/llvm-project/issues/39596