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/* Demonstrate Memcheck correctly handling chain of 64 recursive
calls, each of which allocates a 1 M array on the stack. Requires
--main-stacksize=67117057 (on amd64-linux) or above, but works fine
if you specify that. */
#include <stdio.h>
#define N_MBYTES 64
#define N_INTS_PER_MBYTE (1048576 / sizeof(int))
int rec ( int depth )
{
int i, zzz;
int arr[N_INTS_PER_MBYTE];
if (depth == 0) return 0;
for (i = 0; i < N_INTS_PER_MBYTE; i++)
arr[i] = i * depth;
zzz = rec(depth-1);
for (i = 0; i < N_INTS_PER_MBYTE; i++)
zzz += arr[i];
return zzz;
}
int main ( void )
{
int sum;
fprintf(stderr, "lsframe2: start\n");
sum = rec(N_MBYTES);
fprintf(stderr, "lsframe2: done, result is %d\n", sum);
return 0;
}
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