From e4aec1fa8a9c57672b783d16dd122cb4e6708089 Mon Sep 17 00:00:00 2001
From: Jes Cok <xigua67damn@gmail.com>
Date: Tue, 1 Aug 2023 13:28:14 +0000
Subject: [PATCH] text/template: use "IsValid" instead of "!= zero" to compare
 zero Value
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See CL 308769

Change-Id: I0caa0a84215b3d4b8b3dc6f041b6cd9cbe2c0908
GitHub-Last-Rev: e3aa5bde23fe26cbb6711a6ffbf4856a23fa6f54
GitHub-Pull-Request: golang/go#61657
Reviewed-on: https://go-review.googlesource.com/c/go/+/514195
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
---
 src/text/template/funcs.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/text/template/funcs.go b/src/text/template/funcs.go
index b5a8c9ec50..a949f896fa 100644
--- a/src/text/template/funcs.go
+++ b/src/text/template/funcs.go
@@ -478,7 +478,7 @@ func eq(arg1 reflect.Value, arg2 ...reflect.Value) (bool, error) {
 			case k1 == uintKind && k2 == intKind:
 				truth = arg.Int() >= 0 && arg1.Uint() == uint64(arg.Int())
 			default:
-				if arg1 != zero && arg != zero {
+				if arg1.IsValid() && arg.IsValid() {
 					return false, errBadComparison
 				}
 			}