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//! test that we cannot register hidden types for opaque types
//! declared outside an anonymous constant.
//@ edition:2018
#![feature(type_alias_impl_trait)]
type F = impl core::future::Future<Output = u8>;
struct Bug {
V1: [(); {
#[define_opaque(F)]
fn concrete_use() -> F {
//~^ ERROR future that resolves to `u8`, but it resolves to `()`
async {}
}
// FIXME(type_alias_impl_trait): inform the user about why `F` is not available here.
let f: F = async { 1 };
//~^ ERROR mismatched types
1
}],
}
fn main() {}
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