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AdminXVII authoredThe sigaction handler called map on an option, creating a pointer to a move value. This in turned caused UB for signal handlers. Avoid using pointers directly, and instead prefer references.
AdminXVII authoredThe sigaction handler called map on an option, creating a pointer to a move value. This in turned caused UB for signal handlers. Avoid using pointers directly, and instead prefer references.
signal.c 538 B
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include "test_helpers.h"
void handler(int sig) {
puts("Signal handler called!");
}
int main(void) {
void (*signal_status)(int) = signal(SIGUSR1, handler);
ERROR_IF(signal, signal_status, == SIG_ERR);
signal_status = signal(SIGUSR1, handler);
ERROR_IF(signal, signal_status, != handler);
puts("Raising...");
int raise_status = raise(SIGUSR1);
ERROR_IF(raise, raise_status, < 0);
puts("Raised.");
}