rust-lang / rust-lang/rust-analyzer
[bug] `-> _` inference fails for `&'static str`
Open
Nobody has claimed this yet.
A-assists
A-ty
C-bug
- Dominant language
- Rust
- Stars
- 16.9k
- Forks
- 2.2k
- Avg merge
- 1d 12h
- Merged PRs (30d)
- 72
Description
rust-analyzer version: 2023-12-18
rustc version: 1.76
fn infer() -> _ {
"hi"
}
Has the correct code action (3) but if we choose 2 we get
fn infer() -> &str {
"hi"
}
which doesn't compile.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the issue with the shown fn infer() -> _ example and compare the available code actions, especially the one producing &str. Trace the code action that inserts the inferred return type; done means selecting it produces valid Rust that compiles instead of &str.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100