GDScript 2.0: Stack overflow in setter

[Blackiris]

Godot version:
4.0 c647e41

OS/device including version:
Archlinux

Issue description:
The following code provoke a Stack Overflow (Stack Size: 1024)

class_name OnOffObject
extends Node3D

var objname : String:
	set(val):
		objname = val
		pass

func _ready():
	objname = "aa"
	print("Name:"+ objname)

Steps to reproduce:
Open the reproduction project and launch it

Minimal reproduction project:
SetterStackOverflow.zip

Analysis
It is obvious that the bug happens because, in the setter, the assignment objname = val is replaced by the setter itself, creating an infinite calls (until it reaches 1024).
I thought it was a mistake in my code, but I have complied with the example defined in godotengine/godot-proposals#844 (see warns_when_changed).

The reason is that in gdscript_compiler, when parsing the setter (_parse_setter_getter > _parse_block > _parse_expression), the compiler replace the var assignment with its corresponding setter:

godot/modules/gdscript/gdscript_compiler.cpp

Lines 1024 to 1038 in c647e41

	bool has_setter = false;
	bool is_in_setter = false;
	StringName setter_function;
	if (assignment->assignee->type == GDScriptParser::Node::IDENTIFIER) {
	StringName var_name = static_cast<const GDScriptParser::IdentifierNode *>(assignment->assignee)->name;
	if (!codegen.locals.has(var_name) && codegen.script->member_indices.has(var_name)) {
	setter_function = codegen.script->member_indices[var_name].setter;
	if (setter_function != StringName()) {
	has_setter = true;
	is_in_setter = setter_function == codegen.function_name;
	target.mode = GDScriptCodeGenerator::Address::MEMBER;
	target.address = codegen.script->member_indices[var_name].index;
	}
	}
	}

Don't know if there is a way to disable this replacement only if it is dealing with the same setter code.

[Blackiris]

Well, in fact it is trying to detect if is is in the setter with the line:
is_in_setter = setter_function == codegen.function_name;

However, in my case, codegen.function_name is not defined... I will have a look at how it could happen.

[EDIT] In _parse_function, there is the line:
codegen.function_name = func_name;
But not in _parse_setter_getter, where func_name is computed but not set in codegen.function_name

[Blackiris]

In _parse_setter_getter, just after the block:

StringName func_name;

if (p_is_setter) {
	func_name = "@" + p_variable->identifier->name + "_setter";
} else {
	func_name = "@" + p_variable->identifier->name + "_getter";
}

I can confirm that adding the following line fixes the issue:
codegen.function_name = func_name;