[RFC][PATCH v3] Initial support for C11 Annex K Bounds checking functions

[Paul Eggert]

On 06/14/2013 11:58 AM, Ulrich Bayer wrote:
> CPP suppresses all warnings from system headers

Ah, sorry, I'd missed that, so I guess we'll need to use #error
after all.  Too bad.  How about this instead?

#if (defined __GLIBC_USE_LIB_EXT1 \
     && (__GLIBC_USE_LIB_EXT1 != __STDC_WANT_LIB_EXT1__))
# error "Inconsistent definition of __STDC_WANT_LIB_EXT1__"
#endif
#if __STDC_WANT_LIB_EXT1__
# define __GLIBC_USE_LIB_EXT1 1
#else
# define __GLIBC_USE_LIB_EXT1 0
#endif