2011-04-15  Daniel Krugler  <daniel.kruegler@googlemail.com>
	    Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/48635
	* include/bits/unique_ptr.h (unique_ptr<>::operator=(unique_ptr&&),
	unique_ptr<>::operator=(unique_ptr<>&&),
	unique_ptr<_Tp[],>::operator=(unique_ptr&&),
	unique_ptr<_Tp[],>::operator=(unique_ptr<>&&)): Forward the deleter
	instead of moving it.
	* testsuite/20_util/unique_ptr/assign/48635.cc: New.

Co-Authored-By: Paolo Carlini <paolo.carlini@oracle.com>

From-SVN: r172532