2010-12-14  Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/46910
	* include/bits/shared_ptr_base.h (_Sp_counted_deleter): Do not
	derive from _Sp_counted_ptr.
	* testsuite/20_util/shared_ptr/cons/46910.cc: New.
	* testsuite/20_util/shared_ptr/cons/43820.cc: Adjust.
	* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Adjust.

From-SVN: r167819