https://github.com/oeb25/rkyv-partial-eq-error-reproduction

https://github.com/oeb25/rkyv-partial-eq-error-reproduction

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• Host: GitHub
• URL: https://github.com/oeb25/rkyv-partial-eq-error-reproduction
• Owner: oeb25
• Created: 2023-10-17T09:04:36.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-17T10:40:08.000Z (about 1 year ago)
• Last Synced: 2023-10-17T13:11:16.026Z (about 1 year ago)
• Language: Rust
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Reproduction for [scylladb/scylla-rust-driver#838](https://github.com/scylladb/scylla-rust-driver/pull/838)

Rust automatically dereferences `&&str` when comparing against `&str` as exemplified by the following example.

```rs

fn compiles() {

    Some("") == Some(&"");

}

```

However, adding any use of `rkyv` as in the following code:

```rs

use rkyv::AlignedVec;

fn does_not_compile() {

    Some("") == Some(&"");

}

```

Results in this error:

```rs

error[E0277]: can't compare `Option<&str>` with `Option<&&str>`

 --> src/lib.rs:3:14

  |

3 |     Some("") == Some(&"");

  |              ^^ no implementation for `Option<&str> == Option<&&str>`

  |

  = help: the trait `PartialEq>` is not implemented for `Option<&str>`

  = help: the following other types implement trait `PartialEq`:

            > as PartialEq>>

             as PartialEq>

             as PartialEq>>

```

---

This repository contains two crates, `okay` and `errors`, which reproduce the above successful and failing compile respectively.