rust-lang / rust-lang/rust-clippy
"this could sometimes panic" lint
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- Dominant language
- Rust
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Description
minimal range analysis (lots of snippets like
if x == 0 { return; } x -= 1;around, for example) to eliminate false positives (range analysis by itself can provide useful optimizations)
the hardest thing to reason about is thatv1.len() + v2.len()can't ever overflow ifv1, v2: Vec<T>andsize_of::<T>() > 0
idea by @eddyb https://botbot.me/mozilla/rust-internals/2016-05-27/?msg=66824497&page=3
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
The issue names no files, tests, or entry points. Start by locating the existing lint or analysis infrastructure in rust-clippy and determine how the proposed range analysis would be specified and validated; done would require an agreed scope and tests covering the cited false-positive patterns and overflow reasoning.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100