gistfile1.txt

#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>

#include <mach/task.h>
#include <sys/mman.h>
#include <sys/wait.h>
#include <unistd.h>
#include <time.h>

int main(void)
{
  void* raw = mmap(NULL,
                   1024,
                   PROT_READ | PROT_WRITE,
                   MAP_ANON | MAP_SHARED,
                   -1,
                   0);
  if (raw == MAP_FAILED) abort();
  memset(raw, 61, 1023);
  ((char*)raw)[1022]=62;
  ((char*)raw)[1023]=0;

  int pid;
  pid = fork();

  if (pid) {
    fprintf(stdout, "%s\n", (char*) raw);
    while(1) {
    }
  } else {
    fprintf(stdout, "%s\n", (char*) raw);
  }

  return 0;
}