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// { dg-require-sharedlib "" }

// { dg-options "-g -O2 -pthread -ldl" { target *-*-linux* } }

// Copyright (C) 2004, 2005, 2009 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 3, or (at your option)

// any later version.

//

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING3.  If not see

// <http://www.gnu.org/licenses/>.

#include <dlfcn.h>

#include <pthread.h>

#include <cstdlib>

#include <stdexcept>

void

check_dlopen(void*& h)

{

  dlerror();

  void* tmp = dlopen("./testsuite_shared.so", RTLD_LAZY);

  if (!tmp)

    {

      try

        {

          // Throws std::logic_error on NULL string.

          std::string error(dlerror());

          throw std::runtime_error(error);

        }

      catch (const std::logic_error&)

        { }

    }

  h = tmp;

}

void

check_dlsym(void*& h)

{

  dlerror();

  typedef void (*function_type) (void);

  function_type fn;

  fn = reinterpret_cast<function_type>(dlsym(h, "try_allocation"));

  try

    {

      std::string error(dlerror());

      throw std::runtime_error(error);

    }

  catch (const std::logic_error&)

    { }

  fn();

}

void

check_dlclose(void*& h)

{

  dlerror();

  if (dlclose(h) != 0)

    {

      try

        {

          std::string error(dlerror());

          throw std::runtime_error(error);

        }

      catch (const std::logic_error&)

        { }

    }

}

void*

tf(void* arg)

{

  void* h;

  check_dlopen(h);

  check_dlsym(h);

  check_dlclose(h);

  return 0;

}

// libstdc++/22309

int

main (void)

{

  pthread_t th;

  pthread_create(&th, NULL, tf, NULL);

  pthread_join(th, NULL);

  return 0;

}