24 lines
521 B
Rust
24 lines
521 B
Rust
// Tests that default impls do not have to supply all items but regular impls do.
|
|
|
|
#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
|
|
|
|
trait Foo {
|
|
fn foo_one(&self) -> &'static str;
|
|
fn foo_two(&self) -> &'static str;
|
|
}
|
|
|
|
struct MyStruct;
|
|
|
|
default impl<T> Foo for T {
|
|
fn foo_one(&self) -> &'static str {
|
|
"generic"
|
|
}
|
|
}
|
|
|
|
impl Foo for MyStruct {}
|
|
//~^ ERROR not all trait items implemented, missing: `foo_two` [E0046]
|
|
|
|
fn main() {
|
|
println!("{}", MyStruct.foo_one());
|
|
}
|