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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdbool.h>
#include <signal.h>
#include <errno.h>
bool sigtrap_received = false;
void handler(int signo)
{
if (signo == SIGTRAP)
sigtrap_received = true;
}
int main()
{
struct sigaction sa;
int status;
sa.sa_flags = 0;
sa.sa_handler = handler;
status = sigemptyset(&sa.sa_mask);
if (status < 0) {
perror("sigemptyset()");
exit(EXIT_FAILURE);
}
status = sigaction(SIGTRAP, &sa, 0);
if (status < 0) {
perror("sigaction(SIGTRAP)");
exit(EXIT_FAILURE);
}
status = raise(SIGTRAP);
if (status != 0) {
perror("raise(SIGTRAP)");
exit(EXIT_FAILURE);
}
if (sigtrap_received)
exit(EXIT_SUCCESS);
else
exit(EXIT_FAILURE);
}
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