add Pat, CVarArgs, Dummy, Err

Author: ada4a

clippy_utils/src/check_proc_macro.rs

@@ -498,6 +498,10 @@ fn ast_ty_search_pat(ty: &ast::Ty) -> (Pat, Pat) {
                 (Pat::Str(""), Pat::Str(""))
             }
         },
+
+        // experimental/placeholder tys
+        TyKind::Pat(..) | TyKind::CVarArgs | TyKind::Dummy | TyKind::Err(_) => (Pat::Str(""), Pat::Str("")),
+
         TyKind::ImplicitSelf | TyKind::Typeof(_) | _ => (Pat::Str(""), Pat::Str("")),
     }
 }