PING [PATCH] restore -Wstringop-overflow for checked strcpy/strcat (PR 85259)

[Martin Sebor <msebor at gmail dot com>]

Ping: https://gcc.gnu.org/ml/gcc-patches/2018-05/msg00652.html

On 05/14/2018 04:41 PM, Martin Sebor wrote:
> r256683 committed to GCC 8 to avoiding duplicate instances of
> -Wstringop-overflow warnings on some targets has the unintended
> side-effect of suppressing even singleton instances of the warning
> in cases such as 'strcat (strcpy (buf, "hello "), "world!")' when
> _FORTIFY_SOURCE is defined.
>
> The attached patch restores the warning for the trunk.
>
> Since this is a regression in a security feature and the warning
> isn't prone to false positives (I don't think I've seen any when
> _FORTIFY_SOURCE is defined), I'd also like the fix considered for
> the 8 branch.
>
> Thanks
> Martin