From 7e56637c749c4427ce0456022ea84e8393e5b0f7 Mon Sep 17 00:00:00 2001
From: Xavientois <joshua.rampersad@hotmail.com>
Date: Fri, 15 Jan 2021 19:29:49 -0500
Subject: [PATCH] Add back lower_bound as memeber

---
 library/std/src/io/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/library/std/src/io/mod.rs b/library/std/src/io/mod.rs
index 712e808a024..018fe1c52bf 100644
--- a/library/std/src/io/mod.rs
+++ b/library/std/src/io/mod.rs
@@ -2481,6 +2481,8 @@ impl<R: Read + SizeHint> Iterator for Bytes<R> {
 
 #[stable(feature = "bufreader_size_hint", since = "1.51.0")]
 trait SizeHint {
+    fn lower_bound(&self) -> usize {
+
     fn upper_bound(&self) -> Option<usize> {
         None
     }