Error when building with autofree - ';' expected (got "_t2")

[ArtemkaKun]

V doctor

OS: linux, "Garuda Linux"
Processor: 16 cpus, 64bit, little endian, AMD Ryzen 7 3800X 8-Core Processor
CC version: cc (GCC) 12.2.1 20230201

getwd: /home/yuart
vmodules: /home/yuart/.vmodules
vroot: /home/yuart/Projects/v
vexe: /home/yuart/Projects/v/v
vexe mtime: 2023-03-01 21:46:21
is vroot writable: true
is vmodules writable: true
V full version: V 0.3.3 d971d93.e2daa84

Git version: git version 2.39.2
Git vroot status: weekly.2023.08-45-ge2daa84a
.git/config present: true
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

UI package version

cdf5216

System DE

DE: KDE Plasma 5.27.2
WM: KWin (Wayland)

What did you do?

Run the following code with v -autofree run .

import ui

[heap]
struct App {
mut:
	window ui.Window
	label  ui.Label
	model  Model
}

struct Model {
	counter_value int
}

enum Message {
	increment
	decrement
}

fn main() {
	mut app := App{}
	setup_app(mut app)

	ui.run(app.window)
}

fn setup_app(mut app App) {
	app.window = ui.window(
		width: 400
		height: 400
		title: 'MVU counter'
		children: [
			ui.column(
				margin: ui.Margin{50, 50, 50, 50}
				spacing: 5
				children: [
					app.label,
					ui.row(
						spacing: 5
						children: [
							ui.button(
								text: 'Increment'
								width: 100
								height: 50
								text_size: 20
								on_click: app.send_increment_signal
							),
							ui.button(
								text: 'Decrement'
								width: 100
								height: 50
								text_size: 20
								on_click: app.send_decrement_signal
							),
						]
					),
				]
			),
		]
	)

	app.label = ui.label(text: '0', text_size: 36)
}

fn (mut app App) send_increment_signal(_ &ui.Button) {
	app.model = update(Message.increment, app.model)
	app.react_on_model_change()
}

fn (mut app App) send_decrement_signal(_ &ui.Button) {
	app.model = update(Message.decrement, app.model)
	app.react_on_model_change()
}

fn update(message Message, current_model Model) Model {
	return match message {
		.increment {
			Model{
				counter_value: current_model.counter_value + 1
			}
		}
		.decrement {
			Model{
				counter_value: current_model.counter_value - 1
			}
		}
	}
}

fn (mut app App) react_on_model_change() {
	app.label.text = app.model.counter_value.str()
}

What did you expect to see?

The program started as expected and a window appeared.

What did you see instead

The following error

==================
/tmp/v_1000/ui_counter.17501532973111399599.tmp.c:45264: warning: assignment discards qualifiers from pointer target type
/tmp/v_1000/ui_counter.17501532973111399599.tmp.c:67549: error: ';' expected (got "_t2")
...
==================
(Use `v -cg` to print the entire error message)

builder error:
==================
C error. This should never happen.

This is a compiler bug, please report it using `v bug file.v`.

https://github.com/vlang/v/issues/new/choose

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