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// compile-flags: -Ztrait-solver=next
// Makes sure that alias bounds are not unsound!
#![feature(trivial_bounds)]
trait Foo {
type Item: Copy
where
<Self as Foo>::Item: Copy;
fn copy_me(x: &Self::Item) -> Self::Item {
*x
}
}
impl Foo for () {
type Item = String where String: Copy;
//~^ ERROR overflow evaluating the requirement `<() as Foo>::Item: Copy`
}
fn main() {
let x = String::from("hello, world");
drop(<() as Foo>::copy_me(&x));
//~^ ERROR overflow evaluating the requirement `<() as Foo>::Item: Sized`
//~| ERROR overflow evaluating the requirement `<() as Foo>::Item == _`
//~| ERROR overflow evaluating the requirement `<() as Foo>::Item well-formed`
//~| ERROR overflow evaluating the requirement `String <: <() as Foo>::Item`
//~| ERROR overflow evaluating the requirement `&<() as Foo>::Item well-formed`
//~| ERROR type annotations needed
println!("{x}");
}
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