[PATCH] have ifunc resolver's return type match target

[Florian Weimer]

On 08/21/2017 12:30 AM, Martin Sebor wrote:
> The following GCC patch has been submitted for review.  It
> helps detect mismatches between the type of an ifunc or alias
> declaration and the type of the resolver or alias.
> 
>   https://gcc.gnu.org/ml/gcc-patches/2017-08/msg01103.html
> 
> To let Glibc take advantage of this type checking and avoid
> warnings when using the patched GCC when the change above is
> committed, the patch below adjusts the Glibc __ifunc_resolver
> macro to declare the ifunc resolver so that its return type
> matches that of the target.  (I was going to wait to submit it
> until after the GCC patch has been accepted but per Joseph's
> suggestion I'm posting it here ahead of time.)

Do we have to backport both patches to older releases, too, so that they
keep building with a newer GCC?

Thanks,
Florian