multi_struct redefinition when returning !(int, voidptr) result in an or block

[Uhrbaan]

Describe the bug

when returning two values (an int, u32 or any and a voidptr) in an or block, a second multi_return struct is created with the same values (in this case multi_return_int_voidptr) wich causes a redefinition error.

Expected Behavior

the multi_return struct should not be recreated

Current Behavior

tcc error:
error: struct/union/enum already defined

Reproduction Steps

fn ret_int_ptr(arg int) !(int, voidptr) {
	if arg < 0 {
		return error('argument is smaller then zero')
	}
	return 1, [1, 2, 3].data
}

mut val1 := 0
mut val2 := unsafe { nil }

val1, val2 = ret_int_ptr(0) or {
	println(err)
	val1, val2
}

Possible Solution

probably a compiler bug.

Additional Information/Context

in the example, changing val2 to an int type resolves the error, it just creates a warning because of the pointer to int conversion.

V version

V 0.3.3 e066d1d

Environment details (OS name and version, etc.)

OS: linux, "Manjaro Linux"
Processor: 8 cpus, 64bit, little endian, Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
CC version: cc (GCC) 12.2.0

getwd: /home/uhrbaan/Documents/code/vulkan/learn_vk
vmodules: /home/uhrbaan/.vmodules
vroot: /home/uhrbaan/vlang/v
vexe: /home/uhrbaan/vlang/v/v
vexe mtime: 2023-02-16 19:20:09
is vroot writable: true
is vmodules writable: true
V full version: V 0.3.3 ef5be22.e066d1d

Git version: git version 2.39.0
Git vroot status: weekly.2023.07-14-ge066d1d3-dirty
.git/config present: true
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3