From 8ce1a953fb125ab390e816540d7f6c304ee7e52b Mon Sep 17 00:00:00 2001
From: jiahua wang <wjh180909@gmail.com>
Date: Sat, 2 Oct 2021 22:50:31 +0800
Subject: [PATCH] io: add error check to TeeReader Example

Change-Id: I0b94bdced47483c6412e9979ce2d103fbfc52afb
Reviewed-on: https://go-review.googlesource.com/c/go/+/353729
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Carlos Amedee <carlos@golang.org>
---
 src/io/example_test.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/io/example_test.go b/src/io/example_test.go
index f6d9fd575f..419e449982 100644
--- a/src/io/example_test.go
+++ b/src/io/example_test.go
@@ -142,7 +142,9 @@ func ExampleTeeReader() {
 	r = io.TeeReader(r, os.Stdout)
 
 	// Everything read from r will be copied to stdout.
-	io.ReadAll(r)
+	if _, err := io.ReadAll(r); err != nil {
+		log.Fatal(err)
+	}
 
 	// Output:
 	// some io.Reader stream to be read
-- 
2.50.0