#include <stdio.h>#include <stdlib.h>/* Basic sanity check that syscalls to implement malloc (brk, mmap2,   munmap) are trivially functional.  */int main (){  void *p1, *p2, *p3, *p4, *p5, *p6;  if ((p1 = malloc (8100)) == NULL      || (p2 = malloc (16300)) == NULL      || (p3 = malloc (4000)) == NULL      || (p4 = malloc (500)) == NULL      || (p5 = malloc (1023*1024)) == NULL      || (p6 = malloc (8191*1024)) == NULL)  {    printf ("fail\n");    exit (1);  }  free (p1);  free (p2);  free (p3);  free (p4);  free (p5);  free (p6);  p1 = malloc (64000);  if (p1 == NULL)  {    printf ("fail\n");    exit (1);  }  free (p1);  printf ("pass\n");  exit (0);}