re PR libstdc++/54185 (condition_variable not properly destructed)

2012-08-13  David Adler  <d.adler.s@gmail.com>

	PR libstdc++/54185
	* src/c++11/condition_variable.cc (condition_variable): Always
	destroy native type in destructor.
	* testsuite/30_threads/condition_variable/54185.cc: New.

From-SVN: r190356

1 files changed, 62 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/30_threads/condition_variable/54185.cc b/libstdc++-v3/testsuite/30_threads/condition_variable/54185.cc
new file mode 100644
index 0000000..5769670
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/condition_variable/54185.cc
@@ -0,0 +1,62 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2012 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 <vector>
+#include <mutex>
+#include <condition_variable>
+#include <thread>
+
+// PR libstdc++/54185
+
+std::condition_variable* cond = nullptr;
+std::mutex mx;
+int started = 0;
+int constexpr NUM_THREADS = 10;
+
+void do_thread_a()
+{
+  std::unique_lock<std::mutex> lock(mx);
+  if(++started >= NUM_THREADS)
+  {
+    cond->notify_all();
+    delete cond;
+    cond = nullptr;
+  }
+  else
+    cond->wait(lock);
+}
+
+int main(){
+  std::vector<std::thread> vec;
+  for(int j = 0; j < 1000; ++j)
+  {
+    started = 0;
+    cond = new std::condition_variable;
+    for (int i = 0; i < NUM_THREADS; ++i)
+      vec.emplace_back(&do_thread_a);
+    for (int i = 0; i < NUM_THREADS; ++i)
+      vec[i].join();
+    vec.clear();
+  }
+}