//ww:error "cannot borrow as a slice here"
// #13 carrier: an array LITERAL returned into a tagged-union SLICE success
// variant ([]i32 | e) has no outliving backing (the maker's frame dies) — the
// .ptr would dangle, the same #31/#33 no-backing reject as a bare-slice return.
// Both stages must REJECT: the borrow gate now sees THROUGH the union to its
// []i32 success variant (the silent all-zeros-header miscompile gap). Full
// non-let support (an outliving backing) is #33.
package main;
type e = !i32;
fn mk() ([]i32 | e) = { return [10i32, 20i32, 30i32]; };
export fn main() i32 = {
	let s: []i32 = mk()!;
	return s[0];
};