From fc44d00d5a99973a6deb0863d6aaa7446c016066 Mon Sep 17 00:00:00 2001
From: Koichi Shiraishi <zchee.io@gmail.com>
Date: Thu, 16 Jun 2022 00:26:01 +0900
Subject: [PATCH] proto: use reflect.Ptr for backward compatibility

reflect.Pointer introduced on go1.18. Support 1.17 and earlier.

Change-Id: I62dcdb580a7976068e86df432bc44ee21c2cda81
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/412354
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Reviewed-by: Lasse Folger <lassefolger@google.com>
---
 proto/equal.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/proto/equal.go b/proto/equal.go
index 49e16ba75..67948dd1d 100644
--- a/proto/equal.go
+++ b/proto/equal.go
@@ -33,7 +33,7 @@ func Equal(x, y Message) bool {
 	if x == nil || y == nil {
 		return x == nil && y == nil
 	}
-	if reflect.TypeOf(x).Kind() == reflect.Pointer && x == y {
+	if reflect.TypeOf(x).Kind() == reflect.Ptr && x == y {
 		// Avoid an expensive comparison if both inputs are identical pointers.
 		return true
 	}