#include <dlfcn.h>

#include <stdio.h>

int

main (void)

{

  void *g = dlopen ("unload3mod1.so", RTLD_GLOBAL | RTLD_NOW);

  void *h = dlopen ("unload3mod2.so", RTLD_GLOBAL | RTLD_NOW);

  if (g == NULL || h == NULL)

    {

      printf ("dlopen unload3mod{1,2}.so failed: %p %p\n", g, h);

      return 1;

    }

  dlclose (h);

  dlclose (g);

  g = dlopen ("unload3mod3.so", RTLD_GLOBAL | RTLD_NOW);

  h = dlopen ("unload3mod4.so", RTLD_GLOBAL | RTLD_NOW);

  if (g == NULL || h == NULL)

    {

      printf ("dlopen unload3mod{3,4}.so failed: %p %p\n", g, h);

      return 1;

    }

  int (*fn) (int);

  fn = dlsym (h, "bar");

  if (fn == NULL)

    {

      puts ("dlsym failed");

      return 1;

    }

  int val = fn (16);

  if (val != 24)

    {

      printf ("bar returned %d != 24\n", val);

      return 1;

    }

  return 0;

}