From bf987bf58a2f16199d27e856e9d90f75fc027e10 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Thu, 13 Jul 2023 20:34:01 +0200
Subject: [PATCH] Handle blit_back_with_light with empty area

fixes #13306
---
 src/voxelalgorithms.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/voxelalgorithms.cpp b/src/voxelalgorithms.cpp
index a8f1d8b64..cfbd36243 100644
--- a/src/voxelalgorithms.cpp
+++ b/src/voxelalgorithms.cpp
@@ -1028,6 +1028,9 @@ void blit_back_with_light(Map *map, MMVManip *vm,
 	std::map<v3s16, MapBlock*> *modified_blocks)
 {
 	const NodeDefManager *ndef = map->getNodeDefManager();
+
+	if (vm->m_area.hasEmptyExtent())
+		return;
 	mapblock_v3 minblock = getNodeBlockPos(vm->m_area.MinEdge);
 	mapblock_v3 maxblock = getNodeBlockPos(vm->m_area.MaxEdge);
 	// First queue is for day light, second is for night light.