1#include "libc.h"
2#include <errno.h>
3#include <signal.h>
4
5void (*signal(int sig, void (*func)(int)))(int) {
6    errno = ENOSYS;
7    return SIG_ERR;
8}
9
10weak_alias(signal, bsd_signal);
11weak_alias(signal, __sysv_signal);
12