Public type alias to private or doc(hidden) type only shows impls written in terms of alias

Code

mod private {
    #[derive(Clone, Copy)]
    pub struct Public<T>(T);
}

pub type A<T> = private::Public<Vec<T>>;
impl<T> private::Public<T> { pub fn f() {} }
impl<T> private::Public<Vec<T>> { pub fn g() {} }

impl<T> A<T> {
    pub fn h() {}
}

Reproduction Steps

• cargo doc --open and observe the documentation for A

Expected Outcome

All of f, g, and h, as well as the implementations of Clone and Copy get shown on the page.

Actual Output

Only the h function is shown in the documentation.

Version

rustdoc 1.95.0-nightly (366a1b93e 2026-02-03)

Additional Details

In my testing, the behavior differs significantly from the rules documented for pub use re-exports, which I initially expected to apply. Ideally, the behavior would be the same between the two, or at least provided similar amounts of control.

Start by reproducing the snippet with cargo doc --open and compare the generated documentation for A with the expected methods and trait implementations. Trace rustdoc's handling of public type aliases to private or doc(hidden) types; done means f, g, h, Clone, and Copy are all shown as specified.