Description

With an enum like this one:

enum Hey { What, YaFace, }

...it's possible to match it with braces in a destructuring pattern using braces with a rest pattern, e.g.:

match Hey::What { Hey::YaFace { .. } => todo!(), // ... }

...despite having no fields. When refactoring enum pattern matching, these can be left in when a variant has its fields removed. It might be nice for Clippy to note when such braces are no longer necessary.

Version

rustc 1.92.0 (ded5c06cf 2025-12-08) binary: rustc commit-hash: ded5c06cf21d2b93bffd5d884aa6e96934ee4234 commit-date: 2025-12-08 host: aarch64-apple-darwin release: 1.92.0 LLVM version: 21.1.3 

Additional Labels

@rustbot label C-enhancement