2008-04-24  Richard Guenther  <rguenther@suse.de>

	* c-common.h (check_builtin_function_arguments): Declare.
	* c-common.c (validate_nargs): New function.
	(check_builtin_function_arguments): Likewise.
	* c-typeck.c (build_function_call): Call
	check_builtin_function_arguments.
	* builtins.c (fold_builtin_classify): Remove error reporting code.
	(fold_builtin_unordered_cmp): Likewise.
	(fold_builtin_1): Likewise.
	(fold_builtin_n): Likewise.

	cp/
	* typeck.c (cp_build_function_call): Call
	check_builtin_function_arguments.

	* gcc.dg/builtin-constant_p-1.c: New testcase.
	* gcc.dg/builtin-errors.c: Adjust expected error.

From-SVN: r134635