Lua: Reject setting metatable to a nil value

2025-02-06 08:36:28 +01:00 · 2025-02-06 08:36:28 +01:00 · 4f707e498c
parent e44b2776df
commit 4f707e498c
1 changed files with 4 additions and 1 deletions
--- a/common/space_lua/stdlib.ts
+++ b/common/space_lua/stdlib.ts
@ -124,7 +124,10 @@ const xpcallFunction = new LuaBuiltinFunction(
 );

 const setmetatableFunction = new LuaBuiltinFunction(
-  (_sf, table: LuaTable, metatable: LuaTable) => {
+  (sf, table: LuaTable, metatable: LuaTable) => {
+    if (!metatable) {
+      throw new LuaRuntimeError("metatable cannot be set to nil", sf);
+    }
    table.metatable = metatable;
    return table;
  },