1 /*

     2  *     $Id: blackhole.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $

     3  * $Source: /development/c/demos/blackhole.c,v $

     4  */

     5 

     6 /* compile with -O0 or without optimizations or it won't crash */

     7 

     8 #include <stdio.h>

     9 #include <stdlib.h>

    10 

    11 unsigned long blackhole (unsigned long i)

    12 {

    13     /*

    14      * blackhole stops after a datatype overrun

    15      */

    16     if ((i + 1) < i)

    17         return i;

    18 

    19     if (!(i % 10000))

    20         printf ("Recursion %lu\n", i);

    21 

    22     return blackhole (i + 1);

    23 }

    24 

    25 int main (void)

    26 {

    27     printf ("MAXIMUM RECURSION DEPTH ON YOUR MACHINE: %lu\n", blackhole (0));

    28 

    29     return EXIT_SUCCESS;

    30 }