2011-04-15 Takaya Saito <gintensubaru@gmail.com>

2011-04-15  Takaya Saito  <gintensubaru@gmail.com>

	PR libstdc++/48476
	* include/std/tuple (_Tuple_impl<>::_Tuple_impl(_Tuple_impl<>&&),
	_Tuple_impl<>::operator=(_Tuple_impl&&), _Tuple_impl<>::operator=
	(_Tuple_impl<>&&), tuple_cat): Use std::forward where appropriate.
	* testsuite/20_util/tuple/cons/48476.cc: New.
	* testsuite/20_util/tuple/48476.cc: Likewise.
	* testsuite/20_util/tuple/creation_functions/48476.cc: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172498 138bc75d-0d04-0410-961f-82ee72b054a4