PR libstdc++/48398
	* include/bits/unique_ptr.h (__tuple_type): Store pointer type.
	* testsuite/20_util/unique_ptr/modifiers/48398.cc: New.
	* testsuite/20_util/unique_ptr/requirements/pointer_type.cc: Remove
	unused parameter name.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171894 138bc75d-0d04-0410-961f-82ee72b054a4