mozilla / mozilla/cbindgen

0.29.0 compile warning

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Rust
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Description

Compiling cbindgen v0.29.0 (/usr/local/tmp/crew/cbindgen.20251109144127.dir)
warning: hiding a lifetime that's elided elsewhere is confusing                                                                                                        
  --> src/bindgen/ir/cfg.rs:19:18
   |                                   
19 |     fn load(key: &str) -> DefineKey {             
   |                  ^^^^     ^^^^^^^^^ the same lifetime is hidden here
   |                  |                                                                                                                                                
   |                  the lifetime is elided here
   |                                                                               
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
help: use `'_` for type paths                                                      
   |                            
19 |     fn load(key: &str) -> DefineKey<'_> {
   |                                    ++++      
                                         
warning: `cbindgen` (lib) generated 1 warning (run `cargo fix --lib -p cbindgen` to apply 1 suggestion)
CCwarning: `cbindgen` (bin "cbindgen") generated 1 warning (1 duplicate) 

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at src/bindgen/ir/cfg.rs:19 and review the load function signature alongside the compiler suggestion. Run cargo fix --lib -p cbindgen or the relevant build, then confirm the cbindgen library and binary compile without the mismatched lifetime syntax warning.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
tooling
Issue type
Bug
Difficulty
1/5
Estimated time
Under an hour
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
72/100

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