[PATCH roland/comma-warnings] Avoid comma operator warnings.

[Ondřej Bílka]

On Fri, Jan 31, 2014 at 11:14:19AM -0800, Roland McGrath wrote:
> I'd just put this in if we weren't in release freeze.  I think it's
> harmless enough to go in immediately, but it's certainly not urgent.
> 
> include/signal.h and malloc-machine.h are for internal use only, so GCC
> extensions are fine unconditionally.  The generic bits/sigset.h is only
> used by non-Linux configurations where there is no history of supporting
> compilers older than GCC 2.x, so __extension__ ({...}) is always fine.
> 
> The build I'm doing now so as to notice these warnings is with a compiler
> based on today's GCC trunk, so this warning behavior might not manifest in
> any released compiler version.
> 
> 
Could these be pushed?