Implement observer_ptr.

2015-05-01  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Implement observer_ptr.
	* include/Makefile.am: Add new header.
	* include/Makefile.in: Regenerate.
	* include/experimental/memory: New.
	* testsuite/experimental/memory/observer_ptr/assignment/assign.cc: New.
	* testsuite/experimental/memory/observer_ptr/cons/cons.cc: New.
	* testsuite/experimental/memory/observer_ptr/hash/hash.cc: New.
	* testsuite/experimental/memory/observer_ptr/make_observer.cc: New.
	* testsuite/experimental/memory/observer_ptr/relops/relops.cc: New.
	* testsuite/experimental/memory/observer_ptr/requirements.cc: New.
	* testsuite/experimental/memory/observer_ptr/swap/swap.cc: New.
	* testsuite/experimental/memory/observer_ptr/typedefs.cc: New.

From-SVN: r222706

1 files changed, 32 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/experimental/memory/observer_ptr/make_observer.cc b/libstdc++-v3/testsuite/experimental/memory/observer_ptr/make_observer.cc
new file mode 100644
index 00000000000..b6075fab9c3
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/memory/observer_ptr/make_observer.cc
@@ -0,0 +1,32 @@
+// { dg-options "-std=gnu++14" }
+// { dg-do run }
+
+// Copyright (C) 2015 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 moved_to of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/memory>
+#include <testsuite_hooks.h>
+
+int main()
+{
+  const int i = 42;
+  auto o = std::experimental::make_observer(&i);
+  static_assert( std::is_same<decltype(o),
+                 std::experimental::observer_ptr<const int>>(), "" );
+  VERIFY( o && *o == 42 );
+  VERIFY( o.get() == &i );
+}