[PATCH 06/25] Add struct scratch_buffer and its internal helper functions

[Joseph Myers]

On Mon, 23 Mar 2015, Florian Weimer wrote:

> On 03/23/2015 07:41 PM, Joseph Myers wrote:
> 
> >> Since C allows platforms where pointers and/or floating-point values have
> >> alignments stricter than intmax_t, I suggest using 'max (__alignof__
> >> (intmax_t), __alignof__ (max_align_t))' along with a comment explaining why
> >> you don't trust max_align_t here.
> > 
> > max_align_t was added to stddef.h in GCC 4.7, so we can't rely on it in 
> > glibc without appropriate conditionals.
> 
> We compile glibc in -std=gnu99 mode, and max_align_t appears available.
>  Suggestions?

It's specifically when compiling with GCC 4.6 (the oldest supported 
version) that it won't be available.

-- 
Joseph S. Myers
joseph@codesourcery.com