[dooglius]

The preceding comment indicates that the intent is to support other compilers. I think a better approach is to define __glibc_attribute__ based on compiler support and to stick to that within glibc since there's no reason to think that another compiler's attributes have the same semantics as GNU C's.

[rurban]

That ship sailed already. You simply have to mimic gcc.

Which is at least better than with MSVC, where they did everything differently, and only half of it.

[account42]

Well in practice you have to mimic GCC except for Windows where you have to mimic MSVC.

[rurban]

Not really. MSVC is too broken. I just mimic x86_64-w64-mingw32-gcc, which exists everywhere.