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// 2003-05-03 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
//
// Copyright (C) 2003-2018 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 }
// { dg-options "-pthread" }
// { dg-require-effective-target pthread }
#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...
VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") );
return 0;
}
int
main()
{
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;
}
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