memcheck/tests/solaris/lsframe2.c

   1 /* Demonstrate Memcheck correctly handling chain of 64 recursive
   2    calls, each of which allocates a 1 M array on the stack.  Requires
   3    --main-stacksize=67117057 (on amd64-linux) or above, but works fine
   4    if you specify that. */
   5
   6 #include <stdio.h>
   7
   8 #define N_MBYTES 64
   9 #define N_INTS_PER_MBYTE (1048576 / sizeof(int))
  10
  11 int rec(int depth)
  12 {
  13    int i, zzz;
  14    int arr[N_INTS_PER_MBYTE];
  15    if (depth == 0) return 0;
  16    for (i = 0; i < N_INTS_PER_MBYTE; i++)
  17       arr[i] = i * depth;
  18    zzz = rec(depth-1);
  19    for (i = 0; i < N_INTS_PER_MBYTE; i++)
  20        zzz += arr[i];
  21    return zzz;
  22 }
  23
  24 int main(void)
  25 {
  26    int sum;
  27    printf("lsframe2: start\n");
  28    sum = rec(N_MBYTES);
  29    printf("lsframe2: done, result is %d\n", sum);
  30    return 0;
  31 }