Copying object with spread operator and typealias gives c error: struct/union type expected

[daansystems]

V doctor:

V full version: V 0.4.8 5c65e58.9300982
OS: windows, Microsoft Windows 11 Pro v22631 64-bit
Processor: 24 cpus, 64bit, little endian, 

get_current_dir: D:\vbug
vexe: C:\v\v.exe
vexe mtime: 2024-11-25 10:39:04

vroot: OK, value: C:\v
VMODULES: OK, value: C:\Users\info\.vmodules
VTMP: OK, value: C:\Users\info\AppData\Local\Temp\v_0

Git version: git version 2.42.0.windows.2
Git vroot status: weekly.2024.47-35-g93009823-dirty
.git/config present: true

CC version: Error: 'cc' is not recognized as an internal or external command,

operable program or batch file.


emcc version: Error: 'emcc' is not recognized as an internal or external command,

operable program or batch file.


thirdparty/tcc status: thirdparty-windows-amd64 b425ac82

What did you do?
./v -g -o vdbg cmd/v && ./vdbg src/main.v

module main

type Mat4 = [16]f32

@[heap]
struct Game {
mut:
	object_id u32
}

__global (
	g Game
)

@[heap]
struct GameObject  {
mut:
	transform	Mat4
	id        int = g.object_id++
}

fn (mut gameobject GameObject) instance() &GameObject {
	return &GameObject{...gameobject}
}

fn main() {
	mut v := GameObject{}
	mut v2 := v.instance()
	eprintln("V=${v2}")
}

What did you expect to see?

no c error

What did you see instead?

$ /c/v/v -enable-globals run .
================== C compilation error (from tcc): ==============
cc: C:/Users/info/AppData/Local/Temp/v_0/vbug.01JDHMJ087357BG0H8EQNG9AT3.tmp.c:7233: warning: implicit declaration of function 'tcc_backtrace'
cc: C:/Users/info/AppData/Local/Temp/v_0/vbug.01JDHMJ087357BG0H8EQNG9AT3.tmp.c:13935: error: struct/union type expected
... (the original output was 3 lines long, and was truncated to 2 lines)
=================================================================
(You can pass `-cg`, or `-show-c-output` as well, to print all the C error messages).
builder error:
==================
C error found. It should never happen, when compiling pure V code.
This is a V compiler bug, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

Note

You can use the 👍 reaction to increase the issue's priority for developers.

Please note that only the 👍 reaction to the issue itself counts as a vote.
Other reactions and those to comments will not be taken into account.

_{Huly®: V_0.6-21412}