100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
// 2003-05-03 Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
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//
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// Copyright (C) 2003-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-do run }
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// { dg-options "-pthread" }
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// { dg-require-effective-target pthread }
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#include <ext/rope>
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#include <cstring>
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#include <pthread.h>
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#include <testsuite_hooks.h>
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const int max_thread_count = 4;
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const int max_loop_count = 10000;
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typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type;
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rope_type foo2;
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rope_type foo4;
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void* thread_main(void *)
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{
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// To see a problem with gcc 3.3 and before, set a break point here.
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// Single step through c_str implementation, call sched_yield after
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// capture of NULL __old_c_string in any thread. Single step
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// through another thread past that same point. Now, one thread
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// will receive a bad pointer return. Adding dummy sched_yield
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// should never change program semantics under POSIX threads.
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const char* data4 = foo4.c_str();
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// Please note that the memory leak in the rope implementation with
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// this test case, existed before and after fixing this bug...
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VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") );
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return 0;
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}
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int
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main()
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{
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pthread_t tid[max_thread_count];
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#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
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pthread_setconcurrency (max_thread_count);
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#endif
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rope_type foo;
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foo += "bar";
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foo += "baz";
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foo += "bongle";
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const char* data = foo.c_str();
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VERIFY( !std::strcmp (data, "barbazbongle") );
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const char* data2;
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{
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foo2 += "bar2";
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foo2 += "baz2";
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foo2 += "bongle2";
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data2 = foo2.c_str();
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VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
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}
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rope_type foo3 ("hello");
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const char* data3 = foo3.c_str();
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VERIFY( !std::strcmp (data3, "hello") );
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for (int j = 0; j < max_loop_count; j++)
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{
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foo4 = foo;
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foo4 += foo3;
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foo4 += foo3;
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foo4 += foo3;
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for (int i = 0; i < max_thread_count; i++)
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pthread_create (&tid[i], 0, thread_main, 0);
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for (int i = 0; i < max_thread_count; i++)
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pthread_join (tid[i], 0);
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}
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VERIFY( !std::strcmp (data, "barbazbongle") );
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VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
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return 0;
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}
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