re PR libstdc++/34730 (Legal program doesn't compile with -D_GLIBCXX_DEBUG)

2008-01-12  Paolo Carlini  <pcarlini@suse.de>

	PR libstdc++/34730
	* include/debug/functions.h (__check_sorted_set,
	__check_sorted_set_aux): Add.
	(__check_sorted): Check StrictWeakOrdering.
	* include/debug/macros.h (__glibcxx_check_strict_weak_ordering,
	__glibcxx_check_strict_weak_ordering_pred): Remove.
	(__glibcxx_check_sorted, __glibcxx_check_sorted_pred): Adjust.
	(__glibcxx_check_sorted_set, __glibcxx_check_sorted_set_pred): Add.
	* include/debug/debug.h (__glibcxx_requires_sorted_set,
	__glibcxx_requires_sorted_set_pred): Add.
	* include/bits/stl_algo.h (merge, includes, set_union,
	set_intersection, set_difference, set_symmetric_difference):
	Adjust, use __glibcxx_requires_sorted_set* instead. 
	* testsuite/25_algorithms/set_intersection/34730.cc: New.

From-SVN: r131500