* include/std/future (promise): Add constructors for uses-allocator

	construction from rvalue promise.
	(packaged_task): Implement LWG 2067. Add additional constructors for
	uses-allocator construction.
	* testsuite/30_threads/packaged_task/cons/3.cc: New.
	* testsuite/30_threads/packaged_task/cons/alloc2.cc: New.
	* testsuite/30_threads/promise/cons/alloc2.cc: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@180757 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 42 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/30_threads/promise/cons/alloc2.cc b/libstdc++-v3/testsuite/30_threads/promise/cons/alloc2.cc
new file mode 100644
index 00000000000..a22fd203438
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/promise/cons/alloc2.cc
@@ -0,0 +1,42 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++0x" }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+// { dg-require-atomic-builtins "" }
+
+// Copyright (C) 2011 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/>.
+
+// Test that promise can be default-constructed or move-constructed
+// in a context that does uses-allocator construction.
+
+#include <future>
+#include <memory>
+#include <tuple>
+
+using std::promise;
+using std::allocator_arg;
+using std::allocator;
+using std::tuple;
+
+typedef promise<int>  p;
+typedef promise<int&> pr;
+typedef promise<void> pv;
+allocator<p> a;
+
+tuple<p, pr, pv> t1{ allocator_arg, a };
+tuple<p, pr, pv> t2{ allocator_arg, a, p{}, pr{}, pv{} };