#define _XOPEN_SOURCE 600
#define _BSD_SOURCE

#include <sched.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <sys/wait.h>
#include <unistd.h>

#include "valgrind.h"

#define STACK_SIZE 8192

static int thread_main(void *arg)
{
   char buffer[1024];

   memset( buffer, 1, sizeof( buffer ) );

   return memchr( buffer, 1, sizeof( buffer ) ) == NULL;
}

int main(int argc, char **argv)
{
   void *stack;
   int stackid;
   pid_t pid;

   if ( ( stack = mmap( NULL, STACK_SIZE, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 ) ) == MAP_FAILED )
   {
      perror( "mmap" );
      exit( 1 );
   }

   stackid = VALGRIND_STACK_REGISTER( stack, stack + STACK_SIZE );

   if ( ( pid = clone( thread_main, stack + STACK_SIZE, CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|SIGCHLD, NULL ) ) == -1 )
   {
      perror( "clone" );
      exit( 1 );
   }

   sleep( 1 );

   exit( 0 );
}