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#include<stdio.h>
#include<stdlib.h>
#include<assert.h>

int main() {
  // Check that a real malloc is used by allocating, freeing, then seeing that we did actually free by a new allocation going to the original place
  int N = 100;
  void *allocs[N];
  for (int i = 0; i < N; i++)
    allocs[i] = malloc((i+1)*1024);
  for (int i = 0; i < N; i++)
    free(allocs[i]);
  void *another = malloc(1024);
  assert(another == allocs[0]);
  printf("hello, world!\n");
  return 0;
}