From 0967e9eb858c9f47b44719b990cef3f4efc640ef Mon Sep 17 00:00:00 2001
From: Vftdan <vftdan@gmail.com>
Date: Mon, 19 Aug 2024 21:12:12 +0200
Subject: [PATCH] Prevent sparse output connector list from causing disowned
 events

---
 nodes/assign.c        | 5 +++++
 nodes/differentiate.c | 5 +++++
 nodes/modifiers.c     | 5 +++++
 nodes/router.c        | 6 +++++-
 nodes/scale.c         | 5 +++++
 nodes/tee.c           | 5 +++++
 6 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/nodes/assign.c b/nodes/assign.c
index fb56b8e..164dd18 100644
--- a/nodes/assign.c
+++ b/nodes/assign.c
@@ -35,6 +35,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 	}
 	for (size_t i = 0; i < count; ++i) {
 		event->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+		if (!event->position) {
+			EventNode *orphaned = event;
+			event = orphaned->prev;
+			event_destroy(orphaned);
+		}
 		event = event->next;
 	}
 	return true;
diff --git a/nodes/differentiate.c b/nodes/differentiate.c
index 61a47ea..5f68baf 100644
--- a/nodes/differentiate.c
+++ b/nodes/differentiate.c
@@ -25,6 +25,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 	}
 	for (size_t i = 0; i < count; ++i) {
 		event->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+		if (!event->position) {
+			EventNode *orphaned = event;
+			event = orphaned->prev;
+			event_destroy(orphaned);
+		}
 		event = event->next;
 	}
 	return true;
diff --git a/nodes/modifiers.c b/nodes/modifiers.c
index d034a00..844a90c 100644
--- a/nodes/modifiers.c
+++ b/nodes/modifiers.c
@@ -22,6 +22,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 	}
 	for (size_t i = 0; i < count; ++i) {
 		event->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+		if (!event->position) {
+			EventNode *orphaned = event;
+			event = orphaned->prev;
+			event_destroy(orphaned);
+		}
 		event = event->next;
 	}
 	return true;
diff --git a/nodes/router.c b/nodes/router.c
index 4214a8c..5c44377 100644
--- a/nodes/router.c
+++ b/nodes/router.c
@@ -17,7 +17,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 		}
 		if (event_predicate_apply(node->predicates[i], event) == EVPREDRES_ACCEPTED) {
 			if (event_replicate(event, 1)) {
-				event->next->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+				EventNode * replica = event->next;
+				replica->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+				if (!replica->position) {
+					event_destroy(replica);
+				}
 			}
 		}
 	}
diff --git a/nodes/scale.c b/nodes/scale.c
index 46352ee..3ab8da0 100644
--- a/nodes/scale.c
+++ b/nodes/scale.c
@@ -39,6 +39,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 	}
 	for (size_t i = 0; i < count; ++i) {
 		event->position = &node->as_GraphNode.outputs.elements[i]->as_EventPositionBase;
+		if (!event->position) {
+			EventNode *orphaned = event;
+			event = orphaned->prev;
+			event_destroy(orphaned);
+		}
 		event = event->next;
 	}
 	return true;
diff --git a/nodes/tee.c b/nodes/tee.c
index a098e33..acbe779 100644
--- a/nodes/tee.c
+++ b/nodes/tee.c
@@ -15,6 +15,11 @@ handle_event(EventPositionBase * self, EventNode * event)
 	}
 	for (size_t i = 0; i < count; ++i) {
 		event->position = &node->outputs.elements[i]->as_EventPositionBase;
+		if (!event->position) {
+			EventNode *orphaned = event;
+			event = orphaned->prev;
+			event_destroy(orphaned);
+		}
 		event = event->next;
 	}
 	return true;