re PR libstdc++/31440 (libstdc++-g++-v3 discarded qualifiers)

re PR libstdc++/31440 (libstdc++-g++-v3 discarded qualifiers)

2007-04-03  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/31440
	* include/bits/stl_tree.h (_M_lower_bound(_Link_type, _Link_type,
	const _Key&), _M_upper_bound(_Link_type, _Link_type, const _Key&)):
	Add.
	(_M_equal_range(const _Key&) const): Remove.
	(lower_bound(const key_type&), lower_bound(const key_type&) const,
	upper_bound(const key_type&), upper_bound(const key_type&) const,
	equal_range(const key_type&), equal_range(const key_type&) const):
	Adjust.
	(find(const _Key&), find(const _Key&) const): Tweak.
	* testsuite/23_containers/map/operations/31440.cc: New.

From-SVN: r123452