C - Break out of loop

This program demonstrates a C programming entering an infinite loop
and then breaking out of that loop using signal handlers and longjmp.

/*
 *Test the procedure to catch a memory exception
 */

#include <sys wait.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <stdio.h>
#include <signal.h>
#include <setjmp.h>
#include <unistd.h>

sigjmp_buf env;

/*
 *      Handle the SIGALRM signal when a system alarm expires.
 */

void
handle_sigalarm()
{
 siglongjmp(env, 1);
}

/*
 *
 */

int
infinite_loop (){
 while(5);
}

/*
 *      Check the given memory allocation
 * Trap any segmentation faults
 * Return 1 if would have crashed
 * Return 0 if good.
 */

int
call_infinite_loop (){

 volatile int x;
 x = sigsetjmp(env,1);

 alarm(5);

 if (x == 0)
  infinite_loop();

 alarm(0);
}

/*
 *     Initialize the signal handlers for memory faults
 */

void
InitializeSignalHandlers(){

        struct sigaction handle;

        handle.sa_flags = 0;
        handle.sa_handler = handle_sigalarm;

        sigaction(SIGALRM, &handle, NULL);
}

/*
 *     Initialize everything and run the tests.
 */

int
main (){

 InitializeSignalHandlers();

 call_infinite_loop();

 return 0;
}