mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 09:14:20 +00:00
29 lines
716 B
Rust
29 lines
716 B
Rust
// this used to cause stack overflows
|
|
|
|
trait Hrtb<'a> {
|
|
type Assoc;
|
|
}
|
|
|
|
impl<'a> Hrtb<'a> for () {
|
|
type Assoc = ();
|
|
}
|
|
|
|
impl<'a> Hrtb<'a> for &'a () {
|
|
type Assoc = ();
|
|
}
|
|
|
|
fn make_impl() -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {}
|
|
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
|
|
|
|
fn make_weird_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
|
|
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
|
|
&()
|
|
}
|
|
|
|
fn make_bad_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
|
|
//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
|
|
x
|
|
}
|
|
|
|
fn main() {}
|