ref: 58ace77cc4b17d32fe0cf3904ffd57b4b1afe4b4
dir: /test/matchargstr.myr/
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")
;;
}