Make Ty::boxed_ty return an Option

2024-09-05 00:34:04 +03:00
parent 842d6fc32e
commit f6e8a84eea
21 changed files with 58 additions and 48 deletions
--- a/compiler/rustc_lint/src/unused.rs
+++ b/compiler/rustc_lint/src/unused.rs
@@ -283,9 +283,8 @@ impl<'tcx> LateLintPass<'tcx> for UnusedResults {
            }

            match *ty.kind() {
-                ty::Adt(..) if ty.is_box() => {
-                    let boxed_ty = ty.boxed_ty();
-                    is_ty_must_use(cx, boxed_ty, expr, span)
+                ty::Adt(..) if let Some(boxed) = ty.boxed_ty() => {
+                    is_ty_must_use(cx, boxed, expr, span)
                        .map(|inner| MustUsePath::Boxed(Box::new(inner)))
                }
                ty::Adt(def, args) if cx.tcx.is_lang_item(def.did(), LangItem::Pin) => {