From 94d0b77b542f07cdc698c0997791e39e5a8e4848 Mon Sep 17 00:00:00 2001
From: Nils Dagsson Moskopp <nils@dieweltistgarnichtso.net>
Date: Sat, 13 Nov 2021 23:29:08 +0100
Subject: [PATCH] Add debug command to crash with minetest.find_nodes_in_area()

---
 mods/MISC/mcl_engine_workarounds/init.lua | 28 +++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 mods/MISC/mcl_engine_workarounds/init.lua

diff --git a/mods/MISC/mcl_engine_workarounds/init.lua b/mods/MISC/mcl_engine_workarounds/init.lua
new file mode 100644
index 00000000..8c966fe4
--- /dev/null
+++ b/mods/MISC/mcl_engine_workarounds/init.lua
@@ -0,0 +1,28 @@
+local S = minetest.get_translator("mcl_engine_workarounds")
+
+minetest.register_chatcommand("crash_with_find_nodes_in_area", {
+	description = S("Try crashing the game using minetest.find_nodes_in_area()."),
+	privs = { debug = true },
+	func = function(name)
+		-- In vanilla client, the map is only ever visible until x=31007
+		local pos = { x=0, y=0, z=0 }
+		local radius = 1
+		local minp = pos -- vector.subtract(pos, radius)
+		local maxp = pos -- vector.add(pos, radius)
+		local vm = minetest.get_voxel_manip()
+		local data = vm:read_from_map(
+			minp,
+			maxp
+		)
+		local c_air = minetest.get_content_id("mcl_core:bedrock")
+		data[0] = c_air
+		vm:set_data(data)
+		vm:write_to_map(true)
+		local npos, nnum = minetest.find_nodes_in_area(
+			minp,
+			maxp,
+			{ "mcl_core:bedrock" }
+		)
+		minetest.debug(nnum["mcl_core:bedrock"])
+	end
+})