gcc/testsuite/gcc.dg/torture/pr103615.c

/* { dg-do run } */

int z = 5;
int a[6] = { 0, 0, 0, 0, 0, 1 };
int main()
{
  for (int x = 5; x; x--)
    for (int y = z; y >= x; y--)
      a[y - x] += a[y];
  if (a[0] != 7)
    __builtin_abort ();
  return 0;
}