Dear all,

the attached patch by Steve fixes a regression under -ff2c for functions
where the result is not set.  There would otherwise be conflicting
declarations of the returned result, which gimple doesn't like.

I've committed this as obvious after discussion with Steve for him,
see PR, as

commit r13-1715-g517fb1a78102df43f052c6934c27dd51d786aff7

This fixes a 10/11/12/13 regression, will be backported in the next days.

Thanks,
Harald