From 20009ecd029fa887a8a98122fa5df0ec5181cdb1 Mon Sep 17 00:00:00 2001
From: yjwxfq <112159687+yjwxfq@users.noreply.github.com>
Date: Thu, 1 Jun 2023 14:17:22 +0800
Subject: [PATCH] Update token_contract.go, modify the overflow judgment
 condition for function add()

Signed-off-by: yjwxfq <112159687+yjwxfq@users.noreply.github.com>
---
 token-erc-20/chaincode-go/chaincode/token_contract.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/token-erc-20/chaincode-go/chaincode/token_contract.go b/token-erc-20/chaincode-go/chaincode/token_contract.go
index 836eeeb7..b6b7bad6 100644
--- a/token-erc-20/chaincode-go/chaincode/token_contract.go
+++ b/token-erc-20/chaincode-go/chaincode/token_contract.go
@@ -695,7 +695,7 @@ func add(b int, q int) (int, error) {
 	var sum int
 	sum = q + b
 
-	if (sum < q) == (b >= 0 && q >= 0) {
+	if (sum < q || sum < b) == (b >= 0 && q >= 0) {
 		return 0, fmt.Errorf("Math: addition overflow occurred %d + %d", b, q)
 	}