2006-09-10 Paolo Carlini <pcarlini@suse.de>

	* include/bits/stl_heap.h (sort_heap): Iterator post-decrement is
	only required to be convertible to the iterator type.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116812 138bc75d-0d04-0410-961f-82ee72b054a4