//ww:run-exit 72
// Migrated from 771_widen_transitive row branched_callee_widen.
package main;
type underread = !i32;
type nomem = !void;
fn pick(b: bool) (size | underread | nomem) = {
    if (b) { let u: underread; return u; };
    return 42: size;
};
export fn main() i32 = {
    let r: (size | underread | nomem) = pick(true);
    if (r is underread) { return 72; };
    return 99;
};