From 61bbdd6807f4c383b7300b4fd5931f5e09dc7205 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Tue, 10 Nov 2020 21:43:06 +0100
Subject: [PATCH] Copy position for can_dig

fixes #10514
---
 builtin/game/item.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/builtin/game/item.lua b/builtin/game/item.lua
index f680ce0d4..109712b42 100644
--- a/builtin/game/item.lua
+++ b/builtin/game/item.lua
@@ -551,8 +551,9 @@ function core.node_dig(pos, node, digger)
 	local diggername = user_name(digger)
 	local log = make_log(diggername)
 	local def = core.registered_nodes[node.name]
+	-- Copy pos because the callback could modify it
 	if def and (not def.diggable or
-			(def.can_dig and not def.can_dig(pos, digger))) then
+			(def.can_dig and not def.can_dig(vector.new(pos), digger))) then
 		log("info", diggername .. " tried to dig "
 			.. node.name .. " which is not diggable "
 			.. core.pos_to_string(pos))