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//@ check-pass
#![feature(type_alias_impl_trait, rustc_attrs)]
pub type T = impl Sized;
// The concrete type referred by impl-trait-type-alias(`T`) is guaranteed
// to be the same as where it occurs, whereas `impl Trait`'s instance is location sensitive;
// so difference assertion should not be declared on impl-trait-type-alias's instances.
// for details, check RFC-2515:
// https://github.com/rust-lang/rfcs/blob/master/text/2515-type_alias_impl_trait.md
#[define_opaque(T)]
fn bop() {
take(|| {});
take(|| {});
}
fn take(_: fn() -> T) {}
fn main() {}
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