//ww:run
// migrated from test/wcc/929_match_4arm_cross_module_run.c: 3-arm boundary — arm 2 must reach its body under the shadowed callee.
package a;
export type more = void;
export type done = void;
export fn next(k: i32) (rune | done | more) = {
    if (k == 0) { return 0x42u32: rune; };
    if (k == 1) { let v: done; return v; };
    let v: more; return v;
};
package b;
import a;
type done = void;
fn next(k: i32) i32 = {
    match (a.next(k)) {
    case let r: rune    => return 1i32 + (r: i32);
    case let dn: a.done => return 2;
    case let m:  a.more => return 3;
    };
};
export fn main() i32 = {
    if (next(0) != 67) { return 11; };
    if (next(1) != 2)  { return 12; };
    if (next(2) != 3)  { return 13; };
    return 0;
};