* cp-tree.h (CPTI_BAD_CAST, CPTI_BAD_TYPEID, CPTI_DCAST): New

	* cp-tree.h (CPTI_BAD_CAST, CPTI_BAD_TYPEID, CPTI_DCAST): New
	cp_tree_index values.
	(throw_bad_cast_node, throw_bad_typeid_node, dynamic_cast_node):
	New global node #defines for them.
	* rtti.c (call_void_fn): Replace with ...
	(build_runtime_decl): ... new static function.
	(throw_bad_cast): Use throw_bad_cast_node and build_runtime_decl.
	(throw_bad_typeid): Use throw_bad_typeid_node and build_runtime_decl.
	(build_dynamic_cast_1): Always produce correctly typed result.
	Explicitly produce type_info addresses. Use dynamic_cast_node.
	* exception.cc (__throw_bad_cast): Return `void *'.
	(__throw_bad_typeid): Return `const type_info &'.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31585 138bc75d-0d04-0410-961f-82ee72b054a4