Clang 16 has a new error about incompatible function types, which shows
up when x11/xdm:
greet.c:451:20: error: incompatible function pointer types assigning to 'void (*)(void)' from 'int (*)(void)' [-Wincompatible-function-pointer-types]
__xdm_setgrent = dlfuncs->_setgrent;
^ ~~~~~~~~~~~~~~~~~~
This is because it assumes setgrent(3) returns int, which it has not
done since a very long time.
Reported by: O. Hartmann <ohartmann@walstatt.org>
PR: 272209
MFH: 2023Q2
ffa7085ab4