Commit 9bf6557585f9d5df1b2c8cfc1e20f93eb38a27fd
2021-08-13T06:36:49
Correctly check for bswap builtins before using The __clang_major__ and __clang_minor__ macros provide a marketing version, which is not necessarily comparable for clang distributions from different vendors[1]. In practice, the versioning scheme for Apple's clang is indeed completely different to that of the llvm.org releases. It is thus preferable to check for features directly rather than comparing versions. In this specific case, __builtin_bswap16 was being used with older Apple clang versions that don't support it. [1] https://clang.llvm.org/docs/LanguageExtensions.html#builtin-macros