From ed264a1f198ea4172b4f2fe622bae5987f114561 Mon Sep 17 00:00:00 2001
From: cui <cuiweixie@gmail.com>
Date: Fri, 10 Oct 2025 13:48:25 +0800
Subject: [PATCH] eth/protocols/snap: optimize incHash (#32748)

---
 eth/protocols/snap/range.go | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/eth/protocols/snap/range.go b/eth/protocols/snap/range.go
index 8c98c71d50..f32cca8d23 100644
--- a/eth/protocols/snap/range.go
+++ b/eth/protocols/snap/range.go
@@ -74,8 +74,11 @@ func (r *hashRange) End() common.Hash {
 
 // incHash returns the next hash, in lexicographical order (a.k.a plus one)
 func incHash(h common.Hash) common.Hash {
-	var a uint256.Int
-	a.SetBytes32(h[:])
-	a.AddUint64(&a, 1)
-	return common.Hash(a.Bytes32())
+	for i := len(h) - 1; i >= 0; i-- {
+		h[i]++
+		if h[i] != 0 {
+			break
+		}
+	}
+	return h
 }