mistyped_literal_suffixes triggered for any integer that ends with _8 _16 _32 _64

Summary

https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=c60b770a54590341beeb254000231140

Lint Name

mistyped_literal_suffixes

Reproducer

I tried this code:

fn main() {
    0x0000_8;
    0x0000_16;
    0x0000_32;
    0x0000_64;
    1_8;
    1_16;
    1_32;
    1_64;
}

I saw this happen:

error: mistyped literal suffix
 [--> src/main.rs:2:5
](https://play.rust-lang.org/#)  |
2 |     0x0000_8;
  |     ^^^^^^^^ help: did you mean to write: `0x0000_i8`
  |
  = note: `#[deny(clippy::mistyped_literal_suffixes)]` on by default
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:3:5
](https://play.rust-lang.org/#)  |
3 |     0x0000_16;
  |     ^^^^^^^^^ help: did you mean to write: `0x0000_i16`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:4:5
](https://play.rust-lang.org/#)  |
4 |     0x0000_32;
  |     ^^^^^^^^^ help: did you mean to write: `0x0000_i32`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:5:5
](https://play.rust-lang.org/#)  |
5 |     0x0000_64;
  |     ^^^^^^^^^ help: did you mean to write: `0x0000_i64`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:6:5
](https://play.rust-lang.org/#)  |
6 |     1_8;
  |     ^^^ help: did you mean to write: `1_i8`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:7:5
](https://play.rust-lang.org/#)  |
7 |     1_16;
  |     ^^^^ help: did you mean to write: `1_i16`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:8:5
](https://play.rust-lang.org/#)  |
8 |     1_32;
  |     ^^^^ help: did you mean to write: `1_i32`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

error: mistyped literal suffix
 [--> src/main.rs:9:5
](https://play.rust-lang.org/#)  |
9 |     1_64;
  |     ^^^^ help: did you mean to write: `1_i64`
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mistyped_literal_suffixes

I expected to see this happen:

no denies

Version

No response

Additional Labels

No response

Start with the mistyped_literal_suffixes lint and the linked Rust Playground reproducer. Trace how integer literals ending in _8, _16, _32, and _64 are classified, then add regression coverage for the listed literals. Done means these valid literals no longer produce diagnostics while genuine mistyped suffixes remain checked.