do not allow users to create an empty font group (#1303)

2023-08-19 12:28:18 +08:00
parent bd4e64cc7e
commit 69ce580970
1 changed files with 2 additions and 0 deletions
@@ -145,6 +145,8 @@ static int f_font_group(lua_State* L) {
  luaL_checktype(L, 1, LUA_TTABLE);

  table_size = lua_rawlen(L, 1);
+  if (table_size <= 0)
+    return luaL_error(L, "failed to create font group: table is empty");
  if (table_size > FONT_FALLBACK_MAX)
    return luaL_error(L, "failed to create font group: table size too large");