[warning control] New #pragma GCC diagnostic

[Andrew Pinski]

On Jan 16, 2006, at 10:32 PM, DJ Delorie wrote:

> The search logic is intentionally simplistic.  I thought about
> exporting find_opt from opts.c, but it needs to know the lang_mask and
> that didn't seem to be available.  I suppose we could cache the mask
> in opts.c and export a wrapper function.
>
> Ok to apply after regression checks finish?

Even though this is not implemented in your patch but aving a way to 
push
and pop the current state of warnings would be nice so that I can say:
#pragma GCC diagnostic push
#pragma GCC diagnostic error -Wunused

......

#pragma GCC diagnostic pop


Thanks,
Andrew Pinski