2005-03-21  Chris Jefferson  <chris@bubblescope.net>

	PR libstdc++/20577
	* include/bits/stl_algobase.h (iter_swap): Only delegate iter_swap
	to swap when the iterator's reference_type is a reference to its
	value_type.
	* testsuite/25_algorithms/iter_swap/20577.cc: New.

From-SVN: r96837