R raymond/fix/issue 107165

[r-raymond]

Fixes #107165

by introducing a suggestion to use the struct pattern:

pub enum Elibrary {
    #[non_exhaustive]
    Unit,

    #[non_exhaustive]
    Tuple(i64),
}

and

    match lib {
        Elibrary::Unit => (),
        _ => (),
    };

    match lib {
        Elibrary::Tuple(_) => (),
        _ => (),
    };

lead to

error[E0603]: unit variant `Unit` is private
  --> $DIR/non-exhaustive-variant-hint-issue-107165.rs:39:19
   |
LL |         Elibrary::Unit => (),
   |                   ^^^^ private unit variant
   |
note: the unit variant `Unit` is defined here
  --> $DIR/auxiliary/non_exhaustive_structs_and_variants_lib.rs:3:5
   |
LL |     #[non_exhaustive]
   |     ----------------- cannot be constructed because it is `#[non_exhaustive]`
LL |     Unit,
   |     ^^^^
help: consider using a struct pattern instead: `Unit { .. }`
  --> $DIR/non-exhaustive-variant-hint-issue-107165.rs:39:19
   |
LL |         Elibrary::Unit => (),
   |                   ^^^^

error[E0603]: tuple variant `Tuple` is private
  --> $DIR/non-exhaustive-variant-hint-issue-107165.rs:45:19
   |
LL |         Elibrary::Tuple(_) => (),
   |                   ^^^^^ private tuple variant
   |
note: the tuple variant `Tuple` is defined here
  --> $DIR/auxiliary/non_exhaustive_structs_and_variants_lib.rs:6:5
   |
LL |     #[non_exhaustive]
   |     ----------------- cannot be constructed because it is `#[non_exhaustive]`
LL |     Tuple(i64),
   |     ^^^^^
help: consider using a struct pattern instead: `Tuple { .. }`
  --> $DIR/non-exhaustive-variant-hint-issue-107165.rs:45:19
   |
LL |         Elibrary::Tuple(_) => (),
   |                   ^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0603`.

[rustbot]

r? @lcnr

rustbot has assigned @lcnr.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

[bors]

☔ The latest upstream changes (presumably #126623) made this pull request unmergeable. Please resolve the merge conflicts.

[lcnr]

Please update the PR title and move the PR to "Ready for review" once it's ready

@rustbot author

[Dylan-DPC]

@r-raymond any updates on this?

[Dylan-DPC]

Closing this as inactive. Feel free to reöpen this pr or create a new pr if you get the time to work on this. Thanks