On Mon, Jun 23, 2008 at 01:52:07PM +0100, Stephane Chazelas wrote:
[...]
> So, %as is not available for instance with:
>
> cc -D__STDC_VERSION__=199901L
> (tcc does set that as a builtin macro
> http://hg.sharesource.org/mercurialtcc/rev/1e81d5b65878)
[...]
FYI, and I'm getting off-topic here, the rationale for tcc
setting __STDC_VERSION__ to 199901L can be found in glibc's
features.h:
/* Decide whether a compiler supports the long long datatypes. */
#if defined __GNUC__ \
|| (defined __PGI && defined __i386__ ) \
|| (defined __INTEL_COMPILER && (defined __i386__ || defined __ia64__)) \
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
# define __GLIBC_HAVE_LONG_LONG 1
#endif
So any non-GNU compiler that supports "long long" would have to
set __STDC_VERSION__ to something >= 199901L
So with any such compiler, you'd need to #define _GNU_SOURCE to
have access to %as. In any case it makes sense to use
_GNU_SOURCE given that it *is* a GNU extension.
Best regards,
Stéphane
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