mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 15:01:51 +00:00
26 lines
575 B
Rust
26 lines
575 B
Rust
// run-pass
|
|
#![allow(unused_mut)]
|
|
// Test that when instantiating trait default methods, typeck handles
|
|
// lifetime parameters defined on the method bound correctly.
|
|
|
|
|
|
pub trait Foo {
|
|
fn bar<'a, I: Iterator<Item=&'a ()>>(&self, it: I) -> usize {
|
|
let mut xs = it.filter(|_| true);
|
|
xs.count()
|
|
}
|
|
}
|
|
|
|
pub struct Baz;
|
|
|
|
impl Foo for Baz {
|
|
// When instantiating `Foo::bar` for `Baz` here, typeck used to
|
|
// ICE due to the lifetime parameter of `bar`.
|
|
}
|
|
|
|
fn main() {
|
|
let x = Baz;
|
|
let y = vec![(), (), ()];
|
|
assert_eq!(x.bar(y.iter()), 3);
|
|
}
|