* Florian Weimer via Gcc:
> * Jakub Jelinek:
>
>> On Fri, Oct 21, 2022 at 11:17:40AM +0200, Florian Weimer wrote:
>>> So we would patch the tests?
>>
>> Depends on how large the patch is, but I'd say so.
>>
>>> I guess we can make sure we use “int main
>>> (void)” etc. at the same time.
>>
>> Why? Isn't int main () {} in C2X the same thing as int main (void) {} ?
>> int main () {...} is in 3500+ C tests and every day a few are added...
>
> Is this really possible? For function pointers, it's an ABI change.
> int (*) () and int (*) (void) have different calling conventions on some
> ABIs (e.g., powerpc64le-linux-gnu). The ABI difference goes away once
> the callees are rebuilt, and I think such rebuilt callees are compatible
> with either calling convention.
I'm probably wrong about that. I kind find the place where the rs6000
backend would use the extra space for general-purpose spilling.
Thanks,
Florian
