#include <dlfcn.h>

#include <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <gnu/lib-names.h>

static void *

tf (void *arg)

{

  void *h = dlopen (LIBM_SO, RTLD_LAZY);

  if (h == NULL)

    {

      printf ("dlopen failed: %s\n", dlerror ());

      exit (1);

    }

  if (dlsym (h, "sin") == NULL)

    {

      printf ("dlsym failed: %s\n", dlerror ());

      exit (1);

    }

  if (dlclose (h) != 0)

    {

      printf ("dlclose failed: %s\n", dlerror ());

      exit (1);

    }

  return NULL;

}

static int

do_test (void)

{

#define N 10

  pthread_t th[N];

  for (int i = 0; i < N; ++i)

    {

      int e = pthread_create (&th[i], NULL, tf, NULL);

      if (e != 0)

	{

	  printf ("pthread_create failed with %d (%s)\n", e, strerror (e));

	  return 1;

	}

    }

  for (int i = 0; i < N; ++i)

    {

      void *res;

      int e = pthread_join (th[i], &res;;

      if (e != 0 || res != NULL)

	{

	  puts ("thread failed");

	  return 1;

	}

    }

  return 0;

}

#include <support/test-driver.c>