From 06e625f7d582601f5e2ff69ba80f6d3a11632b24 Mon Sep 17 00:00:00 2001
From: John Kugelman <john@kugelman.name>
Date: Mon, 11 Oct 2021 13:57:38 -0400
Subject: Add #[must_use] to as_type conversions

---
 library/alloc/src/vec/drain.rs | 1 +
 1 file changed, 1 insertion(+)

(limited to 'library/alloc/src/vec')

diff --git a/library/alloc/src/vec/drain.rs b/library/alloc/src/vec/drain.rs
index fb32d144f87..e643940d017 100644
--- a/library/alloc/src/vec/drain.rs
+++ b/library/alloc/src/vec/drain.rs
@@ -52,6 +52,7 @@ impl<'a, T, A: Allocator> Drain<'a, T, A> {
     /// let _ = drain.next().unwrap();
     /// assert_eq!(drain.as_slice(), &['b', 'c']);
     /// ```
+    #[must_use]
     #[stable(feature = "vec_drain_as_slice", since = "1.46.0")]
     pub fn as_slice(&self) -> &[T] {
         self.iter.as_slice()
-- 
cgit 1.4.1-3-g733a5