WARNING: ObjectDB instances leaked at exit

[OvercookedBeef]

I'm not sure if I'm doing something wrong or if it's a bug, so I made a discussion instead of an issue.

When making my game inside the engine, everything worked perfectly. But I now exported my project, and it has an issue when the player quits the game. When they try to quit, the window freezes and I get the following from console:

WARNING: ObjectDB instances leaked at exit (run with --verbose for details).
     at: cleanup (core/object/object.cpp:2378)
Leaked instance: :9223372058296058969
Leaked instance: :9223372064453297409
Leaked instance: :9223372064470074626
Leaked instance: :9223372064486851843
Leaked instance: :9223372064855950598
Leaked instance: :9223372065527039241
Leaked instance: :9223372067640968462
Leaked instance: :9223372075710809518
Leaked instance: GDScriptFunctionState:9223372076851660208
Leaked instance: :9223372076834883017
Hint: Leaked instances typically happen when nodes are removed from the scene tree (with `remove_child()`) but not freed (with `free()` or `queue_free()`).
Orphan StringName: script_move_right (static: 0, total: 3)
Orphan StringName: script_stop (static: 0, total: 2)
Orphan StringName: script_jump (static: 0, total: 2)
Orphan StringName: script_run_once (static: 0, total: 1)
Orphan StringName: script_print_array (static: 0, total: 1)
Orphan StringName: script_set_executing_line (static: 0, total: 1)
Orphan StringName: script_is_touching_wall (static: 0, total: 13)
Orphan StringName: physics_frame (static: 1, total: 2)
Orphan StringName: script_run_after (static: 0, total: 1)
Orphan StringName: script_is_touching_ceiling (static: 0, total: 14)
Orphan StringName: script_restart (static: 0, total: 1)
Orphan StringName: script_switch_direction (static: 0, total: 4)
Orphan StringName: script_is_solid (static: 0, total: 1)
Orphan StringName: script_get_pos (static: 0, total: 1)
Orphan StringName: script_is_in_air (static: 0, total: 2)
Orphan StringName: script_move_left (static: 0, total: 3)
Orphan StringName: script_is_on_floor (static: 0, total: 12)
StringName: 17 unclaimed string names at exit.

Do I need to clean this up some how? I tried calling .free() on the LuaState, but that gave me Attempted to call free a RefCounted object.

(If this isn't related to the library, then oops, sorry)

[OvercookedBeef]

Okay, I think it's my code. I did some stuff to make callbacks get cancelled almost instantly when I want to stop the code, and made quitting stop the code, and I reduced it down to the following:

WARNING: ObjectDB instances leaked at exit (run with --verbose for details).
     at: cleanup (core/object/object.cpp:2378)
Leaked instance: :9223372058296058969
Leaked instance: :9223372064453297409
Leaked instance: :9223372064470074626
Leaked instance: :9223372064486851843
Leaked instance: :9223372064855950598
Leaked instance: :9223372065527039241
Leaked instance: :9223372067640968462
Hint: Leaked instances typically happen when nodes are removed from the scene tree (with `remove_child()`) but not freed (with `free()` or `queue_free()`).

No more orphaned string names. Still not sure what to do about the rest.

[gilzoide]

Hey @OvercookedBeef, are you using Lua to script Godot objects or only as a modding/external scripting tool?

I finally fixed some leaks when using Lua to script Godot objects, we had cyclic dependencies from LuaScript and LuaScriptProperty to their owning LuaState, so that any Godot objects referenced in Lua would leak forever 😬
Not sure if it would help in your case...