./test.zig:6:26: error: dependency loop detected
const b = Node{ .next = &a };
                         ^
./test.zig:5:26: note: referenced here
const a = Node{ .next = &b };
                         ^
./test.zig:9:33: note: referenced here
    @import("std").debug.assert(a.next == &b);
                                ^