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use std
/* checks pattern matching on unions with arguments.
exits with 42. */
type u = union
	`Int int
	`Str byte[:]
	`Nil
;;

const main = {
	var v

	v = `Str "asdf"
	match v
	| `Int 127:	std.fatal("wrong match `Int 127\n")
	| `Str "foo":	std.fatal("Wrong match `Str \"foo\"\n")
	| `Str "fsda":	std.fatal("Wrong match `Str \"fsda\"\n")
	| `Str "asdf":	std.put("Correct `Str \"asdf\"!\n")
	| `Nil:		std.fatal("Wrong match `Str \"fsda\"\n")
	| _:		std.fatal("Impossible failed match\n")
	;;
}