//ww:compile
// nested-struct chained read + store through an INFERRED alloc pointer:
// the checker-synthesized N_TPTR carries the struct BODY node, and the
// dotchainresolve root gate must still fold (byte-id with the annotated
// twin and with cstage's type-keyed fold).
package main;
type inner = struct { a: int, b: int };
type outer = struct { i: inner, n: int };
export fn main() i32 = {
	let p = alloc(outer { i = inner { a = 1, b = 2 }, n = 3 })!;
	if (p.i.b != 2) { return 1; };
	p.i.b = 9;
	if (p.i.b != 9) { return 2; };
	if (p.n != 3) { return 3; };
	return 0;
};