//ww:error "match arm yields"
package main;
fn pick(b: bool) (i32 | str) = { if (b) { return 7; }; return "x"; };
export fn main() i32 = {
	let v: (i32 | str) = pick(true);
	let r = match (v) { case i32 => yield 7; case str => yield "oops"; };
	return 0;
};