memcheck/tests/linux/lsframe1.c

   1
   2 /* Demonstrate Memcheck correctly handling a 64M array on the stack.
   3    Requires --max-stackframe=67108884 or above.  And since it
   4    generates a very large stack, --main-stacksize=67200000
   5    (approximately) is also required. */
   6
   7 #include <stdio.h>
   8
   9 #define N_MBYTES 64
  10
  11 #define N_INTS ((N_MBYTES * 1048576) / sizeof(int))
  12
  13
  14 int main ( void )
  15 {
  16    int i, sum;
  17    int arr[N_INTS];
  18    fprintf(stderr, "lsframe1: start\n");
  19    for (i = 0; i < N_INTS; i++)
  20       arr[i] = i;
  21    sum = 0;
  22    for (i = 0; i < N_INTS; i++)
  23       sum += arr[i];
  24    fprintf(stderr, "lsframe1: done, result is %d\n", sum);
  25    return 0;
  26 }