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Type macros are not supported #10

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dtolnay opened this issue Mar 2, 2017 · 0 comments

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commented Mar 2, 2017

https://github.com/rust-lang/rfcs/blob/master/text/0873-type-macros.md

Rust macro_rules macros can be expanded in type position:

macro_rules! t {
    () => { u32 }
}

fn main() {
    let _: t!() = 0;
}

This is not possible with proc-macro-hack.

@dtolnay dtolnay added the limitation label Mar 2, 2017

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