From d27c9ccca2585c6df5314e91ae73f6c5d73e5ae8 Mon Sep 17 00:00:00 2001
From: Sawyer <18228063+2dvorak@users.noreply.github.com>
Date: Thu, 31 Jul 2025 14:53:28 +0900
Subject: [PATCH] Fix potential overflow in blockchain.DoEstimateGas

---
 blockchain/evm.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/blockchain/evm.go b/blockchain/evm.go
index 4d1db2474..2f8d2bb5c 100644
--- a/blockchain/evm.go
+++ b/blockchain/evm.go
@@ -194,7 +194,7 @@ func DoEstimateGas(ctx context.Context, gasLimit, rpcGasCap uint64, txValue, gas
 
 	// Execute the binary search and hone in on an executable gas limit
 	for lo+1 < hi {
-		mid := (hi + lo) / 2
+		mid := lo + (hi-lo)/2
 		failed, _, err := test(mid)
 		if err != nil {
 			return 0, err