Bound on iterator suggests invalid code to call `iter()` on the `impl` · Issue #121398 · rust-lang/rust (original) (raw)

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Description

Code

pub struct Foo
where I: Iterator, {

  iter: I,

}

pub trait Bar: Iterator + Sized {
fn sprawl(self) -> Foo { Foo {
iter: self } } }

impl Bar for Vec where T: Iterator, {}

It suggests you to call iter() on Vec<T> in the impl, which is invalid code

Current output

Error[E0277]: Vec<T> is not an iterator --> src/lib.rs:17:19 | 17 | impl Bar for Vec | ^^^^^^ Vec<T> is not an iterator; try calling .into_iter() or .iter() | = help: the trait Iterator is not implemented for Vec<T> note: required by a bound in Bar --> src/lib.rs:9:18 | 9 | pub trait Bar: Iterator + Sized {
| ^^^^^^^^ required by this bound in Bar

For more information about this error, try rustc --explain E0277.

Rationale and extra context

Playground link

Rust Version

1.78.0 nightly, but also present on the latest nightly and stable

Bound on iterator suggests invalid code to call iter() on the impl · Issue #121398 · rust-lang/rust (original) (raw)

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