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// run-pass
struct Example<const N: usize>;
macro_rules! external_macro {
() => {{
const X: usize = 1337;
X
}}
}
trait Marker<const N: usize> {}
impl<const N: usize> Marker<N> for Example<N> {}
fn make_marker() -> impl Marker<{
#[macro_export]
macro_rules! const_macro { () => {{ 3 }} } inline!()
}> {
Example::<{ const_macro!() }>
}
fn from_marker(_: impl Marker<{
#[macro_export]
macro_rules! inline { () => {{ 3 }} } inline!()
}>) {}
fn main() {
let _ok = Example::<{
#[macro_export]
macro_rules! gimme_a_const {
($rusty: ident) => {{ let $rusty = 3; *&$rusty }}
}
gimme_a_const!(run)
}>;
let _ok = Example::<{ external_macro!() }>;
let _ok: [_; gimme_a_const!(blah)] = [0,0,0];
let _ok: [[u8; gimme_a_const!(blah)]; gimme_a_const!(blah)];
let _ok: [u8; gimme_a_const!(blah)];
let _ok: [u8; {
#[macro_export]
macro_rules! const_two { () => {{ 2 }} }
const_two!()
}];
let _ok = [0; {
#[macro_export]
macro_rules! const_three { () => {{ 3 }} }
const_three!()
}];
let _ok = [0; const_three!()];
from_marker(make_marker());
}
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