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/* { dg-do run } */

/* { dg-require-effective-target split_stack } */

/* { dg-require-effective-target pthread_h } */

/* { dg-options "-pthread -fsplit-stack" } */

#include <stdlib.h>

#include <pthread.h>

/* Use a noinline function to ensure that the buffer is not removed

   from the stack.  */

static void use_buffer (char *buf) __attribute__ ((noinline));

static void

use_buffer (char *buf)

{

  buf[0] = '\0';

}

/* Each recursive call uses 10,000 bytes.  We call it 1000 times,

   using a total of 10,000,000 bytes.  If -fsplit-stack is not

   working, that will overflow our stack limit.  */

static void

down (int i)

{

  char buf[10000];

  if (i > 0)

    {

      use_buffer (buf);

      down (i - 1);

    }

}

static void *

thread_routine (void *arg __attribute__ ((unused)))

{

  down (1000);

  return NULL;

}

int

main (void)

{

  int i;

  pthread_t tid;

  void *dummy;

  i = pthread_create (&tid, NULL, thread_routine, NULL);

  if (i != 0)

    abort ();

  i = pthread_join (tid, &dummy);

  if (i != 0)

    abort ();

  return 0;

}