//ww:error "#40: sret-class call result cannot be cursor-widened into a tagged slot (mem-to-mem widen unwired)"
package main;
type oops = !str;
type nomem = !void;
type wide = struct { xs: []u8, ys: []u8, n: i64 };
type holder = struct { r: (wide | oops | nomem), k: i64 };
fn mk(b: []u8) (wide | oops | nomem) = { return wide { xs = b, ys = b, n = 1 }; };
export fn main() i32 = {
	let buf: [4]u8 = [1u8, 2u8, 3u8, 4u8];
	let h: holder = holder { r = mk(buf[0:4]), k = 5 };
	match (h.r) {
	case let w: wide => { if (w.n != 1) { return 1; }; };
	case let e: oops => return 13;
	case nomem => return 14;
	};
	return 0;
};