Programming

I'am expecting a signal, but no signal is received when the stack-size reaches 10 bytes.
Here in this code i'am setting rlim_cur=10bytes.
To be more precise, when it reaches 10 bytes the process must receive a SIGSEGV signal? But i find no signal being received.
Am i missing something in this code?
Thanks.
//stack.c

#include <sys/resource.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <signal.h>
#include <sys/mman.h>


int fact(int n)
{
// Recursive, for forcing a signal
if(n==0)return 1;
else
return n*fact(n-1);
}


static void sig_usr(int);


static void sig_usr( int signo)
{
if( signo == SIGSEGV){
printf("received signal, Stack size exceeded 10bytes!!\n");
exit(0);
}
}

int main (int argc, char *argv[])
{
struct rlimit limit;

if (signal(SIGSEGV, sig_usr)==SIG_ERR)
printf("can't catch signal");


//Set the stack size resource limit.
limit.rlim_cur =10;


if (setrlimit(RLIMIT_STACK, &limit) != 0) {
printf("setrlimit() failed with errno=%d\n", errno);
exit(1);
}

/* Get the Stack size resource limit. */
if (getrlimit(RLIMIT_STACK, &limit) != 0) {
printf("getrlimit() failed with errno=%d\n", errno);
exit(1);
}




printf("The soft limit is %lu\n", limit.rlim_cur);
printf("The hard limit is %lu\n", limit.rlim_max);

printf("\n%d\n",fact(10));
return 0;
}