rust/tests/ui/traits/static-method-generic-inference.rs
2023-01-11 09:32:08 +00:00

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() { }