"pattern binding is named the same as one of the variants of the type `<type>`" warning is not generated when matching against a borrow

[yshui]

https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=6b951a2fc1cc70455730b35d42fcf483

This issue has been assigned to @LeSeulArtichaut via this comment.

[csmoe]

This lint was generated by check_for_bindings_named_same_as_variants:

rust/src/librustc_mir/hair/pattern/check_match.rs

Lines 287 to 289 in 9e6fb53

	let pat_ty = cx.tables.pat_ty(p);
	if let ty::Adt(edef, _) = pat_ty.kind {
	if edef.is_enum()

as we can see ty::Ref is just ignored, so the fix is pretty easy, just peel off all the refs in the type of pat_ty.

[LeSeulArtichaut]

@rustbot claim