#include <unistd.h>
#include <stdio.h>

void f() {
 int a = 10;
 printf("stack top ~= %x\n", &a);
}

main() {
  unsigned int result = 0;
  unsigned int prevresult = 0;
  
  while(result!= -1) {
    prevresult = result;
    result = (unsigned int)sbrk(1000);
  }

  printf("sbrk limit = %ld %x\n", prevresult, prevresult);
  f();
}