From bc7c35a6d3bb0074d07beebedc0afcbdcebb8d3f Mon Sep 17 00:00:00 2001
From: Jes Cok <xigua67damn@gmail.com>
Date: Fri, 13 Sep 2024 13:07:16 +0000
Subject: [PATCH] archive/tar: make use of maps.Clone

Change-Id: I2a9d849410002dae1f49a53597298c1903954d12
GitHub-Last-Rev: 20a56b4161dd0864f67d427301cb28563f2c3d50
GitHub-Pull-Request: golang/go#69427
Reviewed-on: https://go-review.googlesource.com/c/go/+/612737
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
---
 src/archive/tar/common.go | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/src/archive/tar/common.go b/src/archive/tar/common.go
index 16ba53e94d..7b3945ff15 100644
--- a/src/archive/tar/common.go
+++ b/src/archive/tar/common.go
@@ -15,6 +15,7 @@ import (
 	"fmt"
 	"internal/godebug"
 	"io/fs"
+	"maps"
 	"math"
 	"path"
 	"reflect"
@@ -696,24 +697,14 @@ func FileInfoHeader(fi fs.FileInfo, link string) (*Header, error) {
 		h.Gname = sys.Gname
 		h.AccessTime = sys.AccessTime
 		h.ChangeTime = sys.ChangeTime
-		if sys.Xattrs != nil {
-			h.Xattrs = make(map[string]string)
-			for k, v := range sys.Xattrs {
-				h.Xattrs[k] = v
-			}
-		}
+		h.Xattrs = maps.Clone(sys.Xattrs)
 		if sys.Typeflag == TypeLink {
 			// hard link
 			h.Typeflag = TypeLink
 			h.Size = 0
 			h.Linkname = sys.Linkname
 		}
-		if sys.PAXRecords != nil {
-			h.PAXRecords = make(map[string]string)
-			for k, v := range sys.PAXRecords {
-				h.PAXRecords[k] = v
-			}
-		}
+		h.PAXRecords = maps.Clone(sys.PAXRecords)
 	}
 	var doNameLookups = true
 	if iface, ok := fi.(FileInfoNames); ok {
-- 
2.48.1