Merge up to 277354.

	* REVISION: Update subversion id.


git-svn-id: https://gcc.gnu.org/svn/gcc/branches/ibm/gcc-8-branch@277422 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 50 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/23_containers/priority_queue/dr2537.cc b/libstdc++-v3/testsuite/23_containers/priority_queue/dr2537.cc
new file mode 100644
index 00000000000..ecb51780ee5
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/priority_queue/dr2537.cc
@@ -0,0 +1,50 @@
+// Copyright (C) 2019 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 c++11 } }
+
+#include <queue>
+#include <testsuite_hooks.h>
+
+struct Q : std::priority_queue<int>
+{
+  using priority_queue::priority_queue;
+
+  bool is_heap() const
+  { return std::is_heap(c.begin(), c.end()); }
+};
+
+void
+test01()
+{
+  const Q::value_compare cmp;
+  const Q::container_type c{ 2, 3, 5, 7, 11, 13, 17, 19, 23 };
+  const Q::container_type::allocator_type a;
+
+  Q q1(cmp, c, a);
+  VERIFY( q1.is_heap() );
+
+  auto c2 = c;
+  Q q2(cmp, std::move(c2), a);
+  VERIFY( q2.is_heap() );
+}
+
+int
+main()
+{
+  test01();
+}