gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/execute/960521-1.c

   1 #include <stdlib.h>
   2
   3 int *a, *b;
   4 int n;
   5
   6 #ifdef STACK_SIZE
   7 #define BLOCK_SIZE (STACK_SIZE / (sizeof (*a) + sizeof (*b)))
   8 #else
   9 #define BLOCK_SIZE 32768
  10 #endif
  11 foo ()
  12 {
  13   int i;
  14   for (i = 0; i < n; i++)
  15     a[i] = -1;
  16   for (i = 0; i < BLOCK_SIZE - 1; i++)
  17     b[i] = -1;
  18 }
  19
  20 main ()
  21 {
  22   n = BLOCK_SIZE;
  23   a = malloc (n * sizeof(*a));
  24   b = malloc (n * sizeof(*b));
  25   *b++ = 0;
  26   foo ();
  27   if (b[-1])
  28     abort ();
  29   exit (0);
  30 }