29 lines
593 B
Rust
29 lines
593 B
Rust
// Issue #3902. We are (at least currently) unable to infer `Self`
|
|
// based on `T`, even though there is only a single impl, because of
|
|
// the possibility of associated types and other things (basically: no
|
|
// constraints on `Self` here at all).
|
|
|
|
mod base {
|
|
pub trait HasNew<T> {
|
|
fn new() -> T;
|
|
fn dummy(&self) { }
|
|
}
|
|
|
|
pub struct Foo {
|
|
dummy: (),
|
|
}
|
|
|
|
impl HasNew<Foo> for Foo {
|
|
fn new() -> Foo {
|
|
Foo { dummy: () }
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn foo() {
|
|
let _f: base::Foo = base::HasNew::new();
|
|
//~^ ERROR E0790
|
|
}
|
|
|
|
fn main() { }
|