`use_self` false negative on tuple or struct enum variants

[awused]

Summary

use_self doesn't trigger for struct or tuple enum variants, only empty variants.

There are false negatives mentioned in the documention for use_self but I couldn't find an issue tracking them. I don't know if these are the same known false negatives or not.

Lint Name

use_self

Reproducer

I tried this code:

#![warn(clippy::use_self)]
#![allow(unused)]

pub enum Something {
    Empty,
    Num(u8),
    TupleNums(u8, u8),
    StructNums { one: u8, two: u8 },
}

impl Something {
    const fn get_value(&self) -> u8 {
        match self {
            Something::Empty => 0,
            Something::Num(n) => *n,                      
            Something::TupleNums(n, _m) => *n,            
            Something::StructNums { one, two: _ } => *one,
        }                                                 
    }                                                     
}                                                         

I expected to see this happen:

I should get a warning for all four uses of Something in get_value.

Instead, this happened:

I only get a warning for Something::Empty. Once I update it to Self::Empty I get no more warnings.

Version

rustc 1.61.0 (fe5b13d68 2022-05-18)
binary: rustc
commit-hash: fe5b13d681f25ee6474be29d748c65adcd91f69e
commit-date: 2022-05-18
host: x86_64-unknown-linux-gnu
release: 1.61.0
LLVM version: 14.0.0

[carols10cents]

Might be related to #6902 ?

[botahamec]

@rustbot claim