PR libstdc++/70437

 	* include/bits/stl_pair.h (_ConstructiblePair,
	_ImplicitlyConvertiblePair, _MoveConstructiblePair,
	_ImplicitlyMoveConvertiblePair): Add shortcut conditions
	for same-type cases.
	* testsuite/20_util/pair/70437.cc: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@234743 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 37 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/20_util/pair/70437.cc b/libstdc++-v3/testsuite/20_util/pair/70437.cc
new file mode 100644
index 00000000000..37e6fb7ec1a
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/pair/70437.cc
@@ -0,0 +1,37 @@
+// { dg-options "-std=gnu++11" }
+// { dg-do compile }
+
+// Copyright (C) 2016 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 <utility>
+
+template <class T> struct B;
+
+template <class T> struct A
+{
+  A(A&&) = default;
+  A(const B<T> &);
+};
+
+template <class T> struct B
+{
+  std::pair<A<T>,int> a;
+  B(B&&) = default;
+};
+
+bool b = std::is_move_constructible<A<int> >::value;