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// 2003-05-03  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>

//

// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010

// 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/>.

// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }

// { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }

// { dg-options "-pthreads" { target *-*-solaris* } }

#include <ext/rope>

#include <cstring>

#include <pthread.h>

#include <testsuite_hooks.h>

const int max_thread_count = 4;

const int max_loop_count = 10000;

typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type;

rope_type foo2;

rope_type foo4;

void* thread_main(void *)

{

  // To see a problem with gcc 3.3 and before, set a break point here.

  // Single step through c_str implementation, call sched_yield after

  // capture of NULL __old_c_string in any thread.  Single step

  // through another thread past that same point.  Now, one thread

  // will receive a bad pointer return.  Adding dummy sched_yield

  // should never change program semantics under POSIX threads.

  const char* data4 = foo4.c_str();

  // Please note that the memory leak in the rope implementation with

  // this test case, existed before and after fixing this bug...

  bool test __attribute__((unused)) = true;

  VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") );

  return 0;

}

int

main()

{

  bool test __attribute__((unused)) = true;

  pthread_t tid[max_thread_count];

#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500

  pthread_setconcurrency (max_thread_count);

#endif

  rope_type foo;

  foo += "bar";

  foo += "baz";

  foo += "bongle";

  const char* data = foo.c_str();

  VERIFY( !std::strcmp (data, "barbazbongle") );

  const char* data2;

  {

    foo2 += "bar2";

    foo2 += "baz2";

    foo2 += "bongle2";

    data2 = foo2.c_str();

    VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );

  }

  rope_type foo3 ("hello");

  const char* data3 = foo3.c_str();

  VERIFY( !std::strcmp (data3, "hello") );

  for (int j = 0; j < max_loop_count; j++)

    {

      foo4 = foo;

      foo4 += foo3;

      foo4 += foo3;

      foo4 += foo3;

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

        pthread_create (&tid[i], 0, thread_main, 0);

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

        pthread_join (tid[i], 0);

    }

  VERIFY( !std::strcmp (data, "barbazbongle") );

  VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );

  return 0;

}