1 files changed, 67 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/testsuite/30_threads/promise/60966.cc b/gcc-4.9/libstdc++-v3/testsuite/30_threads/promise/60966.cc
new file mode 100644
index 000000000..269268b98
--- /dev/null
+++ b/gcc-4.9/libstdc++-v3/testsuite/30_threads/promise/60966.cc
@@ -0,0 +1,67 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+// { dg-require-atomic-builtins "" }
+
+// Copyright (C) 2014 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/>.
+
+// libstdc++/60966
+// This test hangs if std::promise::~promise() destroys the
+// shared state before std::promise::set_value() finishes using it.
+
+#include <future>
+#include <thread>
+#include <vector>
+
+const int THREADS = 10;
+
+void run_task(std::promise<void>* pr)
+{
+  std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  pr->set_value();
+}
+
+int main()
+{
+  std::vector<std::promise<void>*> tasks(THREADS);
+  std::vector<std::thread> threads(THREADS);
+  std::vector<std::future<void>> futures(THREADS);
+
+  for (int i = 0; i < THREADS; ++i)
+  {
+    std::promise<void>* task = new std::promise<void>;
+    tasks[i] = task;
+    futures[i] = task->get_future();
+    threads[i] = std::thread(run_task, task);
+  }
+
+  for (int i = 0; i < THREADS; ++i)
+  {
+    // the temporary future releases the state as soon as wait() returns
+    std::future<void>(std::move(futures[i])).wait();
+    // state is ready, should now be safe to delete promise, so it
+    // releases the shared state too
+    delete tasks[i];
+  }
+
+  for (auto& t : threads)
+    t.join();
+}