* cp-tree.h (abstract_class_use): New enum.
	* typeck2.c (pending_abstract_type): Add use field.
	(abstract_virtuals_error_sfinae): Add overloads taking
	abstract_class_use instead of tree.
	* typeck.c (build_static_cast_1): Call it.
	* except.c (is_admissible_throw_operand_or_catch_parameter): Call it.
	* pt.c: Adjust calls.
	* decl.c (cp_finish_decl): Don't handle functions specially.
	(grokdeclarator): Always check return type.
	* init.c (build_new_1): Adjust call.

From-SVN: r196735