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

["Martin Liška" <mliska@suse.cz>]

On 10/14/22 08:12, Richard Biener wrote:
> 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 think it's more for Martin Jambor who's the IPA specialist when it comes
to parameter manipulation.

Martin

> 
> I suppose there's also a way to figure if a clone has arguments
> changed in any way?
> 
> Thanks,
> Richard.
> 
>> --
>> Eric Botcazou
>>
>>