2010-11-10  Jonathan Wakely  <jwakely.gcc@gmail.com>

	* include/bits/unique_ptr.h: Use static_assert in constexpr
	constructors.
	* testsuite/20_util/unique_ptr/cons/ptr_deleter_neg.cc: Remove xfails.
	* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Adjust dg-error
	line number.

From-SVN: r166525