obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 54 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/20_util/forward/e.cc b/libstdc++-v3/testsuite/20_util/forward/e.cc
new file mode 100644
index 000000000..4d89cd1a8
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/forward/e.cc
@@ -0,0 +1,54 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2010 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 C
+  {
+    T t_;
+
+    C() { }
+
+    template <class U,
+              class = typename std::enable_if
+                    <
+                        !std::is_lvalue_reference<U>::value
+                    >::type>
+      C(U&& u) : t_(std::forward<T>(std::move(u).get())) { }
+
+    C(C&& c) : t_(std::forward<T>(c.t_)) { }
+  };
+
+template <class T>
+  struct Derived
+  : C<T>
+  {
+    Derived() { }
+    Derived(Derived&& d) : C<T>(std::forward<C<T>>(d)) { }
+  };
+
+// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2951.html
+// Test E.
+int main()
+{
+  Derived<int> d;
+  Derived<int> d2(std::move(d));
+}