Godot crashes when accessing static variables in @tool mode

[tokengamedev]

Tested versions

Reproducible in

• 4.2.2 RC1
• 4.2.1 Stable

System information

Windows 11

Issue description

When you try to access static variables in @tool mode. The Godot editor crashes without any logs or messages

Steps to reproduce

Create two files as given below:

# Scene file
@tool
extends Node2D
@export var setup: bool = false:
	set(value):
		setup = value
		print(Fluid.KIND[12]) # Cause of crash as KIND is null


# Fluid File (Note: No @tool annotation)
class_name Fluid

static var KIND := {12: "River" }

When you toggle the setup Godot will crash as it will try to print static variable.
It should print error message like Invalid get index '12' (on base: 'Nil'). rather than crashing

If you add @tool annotation it does not crash and gives the right values

Minimal reproduction project (MRP)

If required will be provided

[IceflowRE]

Related #81250

[LeoDog896]

A reply on that related issue was mentioned by @dalexeev:

If you add @tool to the preloaded script it will work. We have some inconsistency here: in some cases @tool is optional to run dependency code, in other cases it is required (usually Nodes, but in some other cases too, example). I'm not sure if this is a bug as it prevents non-@tool code from being auto-executed.

While crashing is still (absolutely) a bug, should GDScript instead throw an error about not being able to depend on static variables from other non-tool scripts in a tool script?

[IceflowRE]

A reply on that related issue was mentioned by @dalexeev:

If you add @tool to the preloaded script it will work. We have some inconsistency here: in some cases @tool is optional to run dependency code, in other cases it is required (usually Nodes, but in some other cases too, example). I'm not sure if this is a bug as it prevents non-@tool code from being auto-executed.

While crashing is still (absolutely) a bug, should GDScript instead throw an error about not being able to depend on static variables from other non-tool scripts in a tool script?

The best would be to fix #81250.