rust/tests/ui/traits/coercion-generic-bad.rs
2023-01-11 09:32:08 +00:00

20 lines
357 B
Rust

struct Struct {
person: &'static str
}
trait Trait<T> {
fn f(&self, x: T);
}
impl Trait<&'static str> for Struct {
fn f(&self, x: &'static str) {
println!("Hello, {}!", x);
}
}
fn main() {
let s: Box<dyn Trait<isize>> = Box::new(Struct { person: "Fred" });
//~^ ERROR `Struct: Trait<isize>` is not satisfied
s.f(1);
}