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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/114007] gcc chokes on
 __has_cpp_attribute(clang::unsafe_buffer_usage)
Date: Thu, 22 Feb 2024 10:34:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114007

--- Comment #26 from Iain Sandoe <iains at gcc dot gnu.org> ---
but from your initial post it's also guarded by:

#ifndef __has_cpp_attribute
#define __has_cpp_attribute(x) 0
#endif

so it will always be 0 for clang in C mode, since that does not define
__has_cpp_attribute=