//ww:error "not assignable"
// Migrated from 771_widen_transitive row reject_transitive_widen.
package main;
type underread = !i32;
type nomem = !void;
type wrapper = !(underread | nomem);
export fn main() i32 = {
    let u: underread;
    let r: (size | wrapper) = u;
    return 0;
};