rust/tests/ui/type-alias-impl-trait/issue-65679-inst-opaque-ty-...

20 lines
549 B
Rust

//@ check-pass
#![feature(type_alias_impl_trait, rustc_attrs)]
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
fn take(_: fn() -> T) {}
fn bop(_: T) {
take(|| {});
take(|| {});
}
fn main() {}