Undefined bitfield operation on enum alias

[TheOnlySilverClaw]

Describe the bug

When I use an alias to an enum with the @[flag] attribute, I cannot use bitfield operations on the alias.

I'm not sure whether this is supposed to work, but I assumed and couldn't find documentation denying or confirming it.

Reproduction Steps

fn main() {
	
	enum_container := EnumContainer{
		et: .a | .b  // works
	}

	alias_container := AliasContainer{
		at: .a | .b  // fails
	}
}


@[flag]
enum EnumType {
	a
	b
	c
}

struct EnumContainer {
	et EnumType
}

type AliasType = EnumType

struct AliasContainer {
	at AliasType
}

Expected Behavior

The aliased type should behave like the type it aliases.
So the bitfield operations should work in both cases.

Current Behavior

Compilation fails with

flag-test.v:8:7: error: undefined operation AliasType | AliasType
6 |
7 | alias_container := AliasContainer{
8 | at: .a | .b
| ~~~~~~~
9 | }
10 | }

Possible Solution

No response

Additional Information/Context

No response

V version

0.4.5

Environment details (OS name and version, etc.)

V full version: V 0.4.5 c0afe5d.f33b712
OS: linux, Ubuntu 22.04.4 LTS

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[Delta456]

This should work