4 files changed, 20 insertions, 0 deletions
diff --git a/scene/2d/line_2d.cpp b/scene/2d/line_2d.cpp
index 2959ea1a36..37eb45c21d 100644
--- a/scene/2d/line_2d.cpp
+++ b/scene/2d/line_2d.cpp
@@ -116,6 +116,7 @@ Vector<Vector2> Line2D::get_points() const {
 }
 
 void Line2D::set_point_position(int i, Vector2 p_pos) {
+	ERR_FAIL_INDEX(i, _points.size());
 	_points.set(i, p_pos);
 	update();
 }
diff --git a/scene/gui/label.cpp b/scene/gui/label.cpp
index 2997a6ebe9..b98caf3562 100644
--- a/scene/gui/label.cpp
+++ b/scene/gui/label.cpp
@@ -566,6 +566,7 @@ float Label::get_percent_visible() const {
 }
 
 void Label::set_lines_skipped(int p_lines) {
+	ERR_FAIL_COND(p_lines < 0);
 	lines_skipped = p_lines;
 	_update_visible();
 	update();
diff --git a/scene/main/node.cpp b/scene/main/node.cpp
index f6a0f5a6c0..f0c562260f 100644
--- a/scene/main/node.cpp
+++ b/scene/main/node.cpp
@@ -1966,6 +1966,23 @@ bool Node::is_editable_instance(const Node *p_node) const {
 	return p_node->data.editable_instance;
 }
 
+Node *Node::get_deepest_editable_node(Node *p_start_node) const {
+	ERR_FAIL_NULL_V(p_start_node, nullptr);
+	ERR_FAIL_COND_V(!is_a_parent_of(p_start_node), nullptr);
+
+	Node const *iterated_item = p_start_node;
+	Node *node = p_start_node;
+
+	while (iterated_item->get_owner() && iterated_item->get_owner() != this) {
+		if (!is_editable_instance(iterated_item->get_owner()))
+			node = iterated_item->get_owner();
+
+		iterated_item = iterated_item->get_owner();
+	}
+
+	return node;
+}
+
 void Node::set_scene_instance_state(const Ref<SceneState> &p_state) {
 	data.instance_state = p_state;
 }
diff --git a/scene/main/node.h b/scene/main/node.h
index b3979993e0..249a0ff86e 100644
--- a/scene/main/node.h
+++ b/scene/main/node.h
@@ -330,6 +330,7 @@ public:
 
 	void set_editable_instance(Node *p_node, bool p_editable);
 	bool is_editable_instance(const Node *p_node) const;
+	Node *get_deepest_editable_node(Node *p_start_node) const;
 
 	/* NOTIFICATIONS */