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|
struct Example<const N: usize>;
macro_rules! external_macro {
() => {{
//~^ ERROR expected type
const X: usize = 1337;
X
}}
}
trait Marker<const N: usize> {}
impl<const N: usize> Marker<N> for Example<N> {}
fn make_marker() -> impl Marker<gimme_a_const!(marker)> {
//~^ ERROR: type provided when a constant was expected
Example::<gimme_a_const!(marker)>
//~^ ERROR: type provided when a constant was expected
}
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 }}
//~^ ERROR expected type
//~| ERROR expected type
};
gimme_a_const!(run)
}>;
let _fail = Example::<external_macro!()>;
//~^ ERROR: type provided when a constant was expected
let _fail = Example::<gimme_a_const!()>;
//~^ ERROR unexpected end of macro invocation
//~| ERROR: type provided when a constant was expected
}
|
