From 31e63fcf66188504e0b1941059394cf5df49bc17 Mon Sep 17 00:00:00 2001
From: cui <523516579@qq.com>
Date: Tue, 2 Apr 2024 16:47:15 +0800
Subject: [PATCH] rlp: using maps.Clone (#29434)

---
 rlp/typecache.go | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/rlp/typecache.go b/rlp/typecache.go
index 3e37c9d2fc..eebf4cd611 100644
--- a/rlp/typecache.go
+++ b/rlp/typecache.go
@@ -18,6 +18,7 @@ package rlp
 
 import (
 	"fmt"
+	"maps"
 	"reflect"
 	"sync"
 	"sync/atomic"
@@ -90,10 +91,7 @@ func (c *typeCache) generate(typ reflect.Type, tags rlpstruct.Tags) *typeinfo {
 	}
 
 	// Copy cur to next.
-	c.next = make(map[typekey]*typeinfo, len(cur)+1)
-	for k, v := range cur {
-		c.next[k] = v
-	}
+	c.next = maps.Clone(cur)
 
 	// Generate.
 	info := c.infoWhileGenerating(typ, tags)