File: blockfault.c

package info (click to toggle)
valgrind 1%3A3.2.1-1
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 27,372 kB
  • ctags: 23,091
  • sloc: ansic: 192,648; xml: 10,723; sh: 4,750; perl: 4,023; makefile: 2,103; asm: 1,813; cpp: 140; haskell: 139
file content (31 lines) | stat: -rw-r--r-- 596 bytes parent folder | download | duplicates (2) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>

static void handler(int sig, siginfo_t *info, void *v)
{
	printf("info: sig=%d code=%d addr=%p\n",
	       info->si_signo, info->si_code, info->si_addr);
	exit(0);
}

/* Blocking a fault, ie SIGSEGV, won't work, and is the same as having
   the default handler */
int main()
{
	struct sigaction sa;
	sigset_t mask;

	sa.sa_sigaction = handler;
	sigemptyset(&sa.sa_mask);
	sa.sa_flags = SA_SIGINFO;
	
	sigaction(SIGSEGV, &sa, NULL);

	sigfillset(&mask);
	sigprocmask(SIG_BLOCK, &mask, NULL);

	*(volatile int *)1234 = 213;

	return 0;
}