[all-commits] [llvm/llvm-project] 2bc098: [clang][Sema] Don't issue -Wcast-function-type-mis...

[Raul Tambre via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2bc098b8aba089fe8328b3b8a8b6b6816cd5a908
      https://github.com/llvm/llvm-project/commit/2bc098b8aba089fe8328b3b8a8b6b6816cd5a908
  Author: Raul Tambre <raul at tambre.ee>
  Date:   2024-06-03 (Mon, 03 Jun 2024)

  Changed paths:
    M clang/lib/Sema/SemaCast.cpp
    M clang/test/Sema/warn-cast-function-type-strict.c
    M clang/test/Sema/warn-cast-function-type.c
    M clang/test/SemaCXX/warn-cast-function-type-strict.cpp
    M clang/test/SemaCXX/warn-cast-function-type.cpp

  Log Message:
  -----------
  [clang][Sema] Don't issue -Wcast-function-type-mismatch for enums with a matching underlying type (#87793)

Enums are passed as their underlying integral type so they're ABI compatible if the size matches.
Useful with C APIs that pass user-controlled values to callbacks that can be made type safe by using enumerations (e.g. GStreamer).

Discovered internally in some code after 999d4f840777bf8de26d45947192aa0728edc0fb.



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