Missing link to cast_possible_wrap

[smoelius]

Run Clippy over this code and you will see a link to cast_sign_loss but not to cast_possible_wrap:

#![warn(clippy::pedantic)]

fn main() {
    let x: i64 = 1;
    let _ = x as u64; // warning with link to `cast_sign_loss`

    let y: u64 = 1;
    let _: i64 = y as i64; // warning, but no link to `cast_possible_wrap`
}

(Playgound)

[y21]

rust-clippy/clippy_lints/src/casts/cast_possible_wrap.rs

Line 81 in 0c42e45

cx.struct_span_lint(CAST_POSSIBLE_WRAP, expr.span, message, |diag| {

This should probably use span_lint_and_then. I think the span_lint* functions are responsible for adding the link

[Jacherr]

@rustbot claim

[y21]

This is also the case for self_named_module_files.

Maybe we should have an internal lint that stops people from using cx.struct_span_lint directly.

[smoelius]

Maybe we should have an internal lint that stops people from using cx.struct_span_lint directly.

Maybe disallowed_methods is all that is needed?