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Cross-crate re-export produces invalid rustdoc for impl Trait #62779

fatemender opened this issue Jul 18, 2019 · 1 comment


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commented Jul 18, 2019

In a cross-crate reexport of an impl Trait-accepting function, rustdoc formats it in a wrong way which is not even valid Rust.

Let crate1 be:

pub trait MyTrait {}
pub fn accepts_impl(_t: impl MyTrait) {}

Let crate2 be:

pub use crate1::{MyTrait, accepts_impl};

If we generate docs for crate2, we get this definition for the (re-exported) accepts_impl:

pub fn accepts_impl<impl MyTrait>(_t: impl MyTrait) 
    impl MyTrait: MyTrait, 

I see some similarities with #60113 here.
Both issues still reproduce on stable 1.36.0 and nightly bc2e84c.


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commented Jul 18, 2019

#61613 should fix this problem.

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