rust-lang/rust-clippy

Shadowing of types via Generic Parameter

Open

#380 opened on Oct 12, 2015

View on GitHub
 (2 comments) (0 reactions) (1 assignee)Rust (10,406 stars) (1,391 forks)batch import
A-lintgood first issue

Description

struct Foo {}

struct<Foo> Bar { f: Foo }

Should warn that Foo in Bar shadows the struct Foo declared previously.

Summary Notes

Generated by triagebot, see help for how to add more

Contributor guide

Tech stack
rust
Domain
clitooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Rust genericsClippy lint development
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Examine the test case example comment at https://github.com/rust lang/rust clippy/issues/380#issuecomment 2862315757 to understand expected behavior. Look at existing similar lints in Clippy, such as those in clippy lints/src/, for pattern matching. The implementation should detect when a generic parameter name shadows a type name defined earlier in the same scope.