https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117796
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Daniel Starke from comment #6)
> That means this is considered to be valid C code?
I just checked the newest version of ncurses and it is doing:
```
for ac_func in \
...
select \
...
/* We use char because int might match the return type of a gcc2
builtin and then its argument prototype would still apply. */
char $ac_func (void);
int
main (void)
{
/* The GNU C library defines stubs for functions which it implements
to always fail with ENOSYS. Some functions are actually named
something starting with __ and the normal name is an alias. */
#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
#error found stub for $ac_func
#endif
return $ac_func ();
;
return 0;
}
...
```
So you are using too old ncurses.
