fix

vlib/v/tests/options/option_ptr_unwrap_selector_test.v

@@ -0,0 +1,39 @@
+module main
+
+@[heap]
+interface IGameObject {
+mut:
+	name     string
+	parent   ?&IGameObject
+	children []&IGameObject
+	add_child(mut o IGameObject)
+}
+
+@[heap]
+struct GameObject implements IGameObject {
+mut:
+	name     string
+	parent   ?&IGameObject
+	children []&IGameObject
+}
+
+fn (mut gameobject GameObject) add_child(mut o IGameObject) {
+	o.parent = gameobject
+	gameobject.children << o
+}
+
+fn test_main() {
+	mut v1 := &GameObject{
+		name: 'v1'
+	}
+	mut v2 := &GameObject{
+		name: 'v2'
+	}
+	v1.add_child(mut v2)
+	for child in v1.children {
+		if child.parent != none {
+			eprintln('parent: ${child.parent.name}')
+		}
+	}
+	assert true
+}