Andres Freund <andres@anarazel.de> writes:
> We've several callers to load_external_function() that do not use the
> returned value as a PGFunction. I'd vote for changing the return type to
> void * and have fmgr.c cast it to PGFunction after verifying the
> function's magic.
void* isn't necessarily compatible with function pointers --- there are
platforms where they're physically different widths, though possibly
you'd never get PG to run on such hardware anyway.
I'd be OK with declaring it as a more generic function pointer type,
perhaps "void (*funcptr) ()".
However, given that a cast is going to be necessary anyway, it seems
like this is mostly useless churn...
regards, tom lane