Re: [PATCH] Fix bogus -Wstringop-overflow warning

[Richard Biener <richard.guenther@gmail.com>]

On Fri, Oct 14, 2022 at 12:54 AM Eric Botcazou via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> > Not a fan as it could potentially hide a real issue, but I don't really
> > have a better solution.
>
> Thanks.
>
> > I pondered suggesting "access" affect type identity, but the cases where
> > that's really important are probably better handled by the "fn spec"
> > attribute, leaving "access" strictly impacting diagnostics.
>
> I can expand a bit here, because I tried to change the "access" attribute that
> way and this badly breaks the C compiler, for example:
>
> int foo (int n, char m[1][n]);
>
> int foo (int n, char m[1][n]) {}
>
> no longer compiles with an error about different function types.

Note in discussion with IPA folks we agreed that IPA cloning that modifies
arguments either has to remove access attributes, adjust them or refrain
from cloning.

Martin - has anything been done to this respect?

I suppose there's also a way to figure if a clone has arguments
changed in any way?

Thanks,
Richard.

> --
> Eric Botcazou
>
>