//ww:run-exit 3
package main;
type rep = struct { id: size, min: (void | size) };
export fn main() i32 = { let r: rep = rep { id = 0: size, min = void }; r.id = 1; r.min = 2: size; let acc = 0: size; acc += r.id; if (r.min is size) { acc += r.min as size; }; return acc: i32; };