#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <setjmp.h>

int a[100];
int *b;

static jmp_buf jbuf;

int searchR(int *a,int x,int i) {
  return a[i]!=x ? searchR(a,x,i+1) : i;
  }

void catch(int signum) {
  printf("Trapped signal %d\n",signum);
  longjmp(jbuf,1);
  }

void search(int *a,int x) {
  if (!setjmp(jbuf))
    printf("%d at %d\n",x,searchR(a,x,0));
  else
    printf("%d missing\n",x);
  }

main() {
  int i;

  signal(SIGBUS,catch);
  signal(SIGSEGV,catch);

  for (i=0;i<100;i++)
    a[i]=10*i;
  search(a,100);
  search(a,770);
  search(a,-1);
  search(a,-111);
  search(a,-11111111);

  b=(int*) malloc(10000*sizeof(int));
  for (i=0;i<10000;i++)
    b[i]=10*i;
  search(b,1000);
  search(b,7770);
  search(b,-1);
  search(b-100,-1111);
  }