https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114007
--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
perhaps this is also a clang regression - for Jakub's example with Xcode 15.1 :
$ clang --version
Apple clang version 15.0.0 (clang-1500.1.0.2.5)
Target: x86_64-apple-darwin23.3.0
master-wip-short-queue mini-05-son:gcc-master iainsandoe$ clang t.c -std=c11
-fsyntax-only
t.c:2:29: error: missing ')' after ':'
#if __has_c_attribute (clang::unsafe_buffer_usage)
^
t.c:2:23: note: to match this '('
#if __has_c_attribute (clang::unsafe_buffer_usage)
^
t.c:5:5: error: function-like macro '__has_cpp_attribute' is not defined
#if __has_cpp_attribute (clang::unsafe_buffer_usage)
^
2 errors generated.
