| #![feature(const_generics)] |
| // revisions: min_tait full_tait |
| #![feature(min_type_alias_impl_trait)] |
| #![cfg_attr(full_tait, feature(type_alias_impl_trait))] |
| #![allow(incomplete_features)] |
| |
| use std::fmt::Debug; |
| |
| fn main() {} |
| |
| // test that unused generic parameters are ok |
| type TwoTys<T, U> = impl Debug; |
| type TwoLifetimes<'a, 'b> = impl Debug; |
| type TwoConsts<const X: usize, const Y: usize> = impl Debug; |
| |
| fn one_ty<T: Debug>(t: T) -> TwoTys<T, T> { |
| //~^ ERROR non-defining opaque type use in defining scope |
| t |
| } |
| |
| fn one_lifetime<'a>(t: &'a u32) -> TwoLifetimes<'a, 'a> { |
| //~^ ERROR non-defining opaque type use in defining scope |
| t |
| } |
| |
| fn one_const<const N: usize>(t: *mut [u8; N]) -> TwoConsts<N, N> { |
| //~^ ERROR non-defining opaque type use in defining scope |
| t |
| } |