/* 
 * Será possível avançar além do espaço reservado para a pilha?
 */ 

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>

#define SCRATCH "teste_mmap.txt"
char* map;

void recursiva() {
  char v[0x100];
  printf ("v: %p\n", (void*) v);
  recursiva();
  return; 
}

int main() {
  int fd;
  struct stat buf;

  if ((fd = open(SCRATCH, O_RDWR, 0600)) == -1) {
    perror("open");
    return 0;
  }

  stat(SCRATCH, &buf);

  if ((map = mmap (&fd, buf.st_size, PROT_WRITE | PROT_READ,
		   MAP_SHARED, fd, 0)) == (void*) -1) {
    perror("mmap");
    exit(-1);
  }
  printf ("map: %p\n", (void*) map);
  recursiva();
  return(0);
}