| #![feature(associated_type_defaults)] |
| |
| struct S<T = u8>(T); |
| trait Tr<T = u8> { |
| type A = (); |
| } |
| |
| impl Tr<Self> for S {} // OK |
| impl<T: Tr<Self>> Tr<T> for S {} // OK |
| impl Tr for S where Self: Copy {} // OK |
| impl Tr for S where S<Self>: Copy {} // OK |
| impl Tr for S where Self::A: Copy {} // OK |
| |
| impl Tr for Self {} //~ ERROR `Self` is not valid in the self type of an impl block |
| impl Tr for S<Self> {} //~ ERROR `Self` is not valid in the self type of an impl block |
| impl Self {} //~ ERROR `Self` is not valid in the self type of an impl block |
| impl S<Self> {} //~ ERROR `Self` is not valid in the self type of an impl block |
| impl (Self, Self) {} //~ ERROR `Self` is not valid in the self type of an impl block |
| impl Tr<Self::A> for S {} //~ ERROR cycle detected |
| |
| fn main() {} |
