Can't use free() as Callable

[KoBeWi]

Tested versions

Confirmed in 4.2, but likely applies to all current 4.x versions

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

When trying to use free() as a Callable (e.g. for connecting signal or using call_deferred()), it fails with Parser Error: Identifier not found: free, but only at runtime.

Steps to reproduce

func _ready():
	free.call_deferred()

2. Run.

Minimal reproduction project (MRP)

N/A

[akien-mga]

Related to #82251, and duplicate of #58912 (but closed after adding docs).
Should be fixed by #82264. If you want to test/review it, could use another pair of eyes before merging for 4.3.

[KoBeWi]

Hmm I knew it was reported before, but couldn't find it 🤔
It's a bug though, because the error appears only at runtime.

[KoBeWi]

#82264 does not fix it.

[dalexeev]

#82264 is about methods of Variant types, free() is an Object method. I'm guessing the reason is that Object.free() is bound in a special way:

godot/core/object/object.cpp

Line 1648 in 06bb9f2

ClassDB::add_virtual_method("Object", MethodInfo("free"), false);