PATCH: Use __builtin_bswap32/64 for GCC >= 4.2

[H.J. Lu]

On Thu, Apr 5, 2012 at 2:01 PM, Roland McGrath <roland@hack.frob.com> wrote:
> Any static inlines need to use __attribute__ ((__unused__)).

__attribute__ ((__unused__)) may not work for all compilers.
Should we use __extern_inline since it is a user visible header
file?

-- 
H.J.