Macro expansion of attribute-bearing statement treated as expression

[powerboat9]

I tried this code:

macro_rules! mac {
    () => {
        #[allow(overflowing_literals)]
        match () {_ => {}}
    }
}

pub fn foo() {
    mac!()
}

I expected to see this happen: no error

Instead, this happened:

test.rs:3:9: error: found unexpected token ‘#’ in null denotation
    3 |         #[allow(overflowing_literals)]
      |         ^

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• sha: 1b322540fa0fce561cf86e371dd7f304f1343511

[CohenArthur]

@powerboat9 if you'd like to work on this, this is probably caused by a missing call to parse_outer_attributes in the macro transcribers. I'm thinking that the fix should not be too hard, but maybe I am downplaying it in my head