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 } 32
