From b3b0649dd6f10672edbbc748be37d5506b5102dd Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Sat, 1 Sep 2018 21:19:15 +0200
Subject: [PATCH] check size in Reset

---
 common/buf/buffer.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/buf/buffer.go b/common/buf/buffer.go
index f716c5564..4f85792e6 100644
--- a/common/buf/buffer.go
+++ b/common/buf/buffer.go
@@ -67,6 +67,9 @@ func (b *Buffer) Reset(writer Supplier) error {
 	nBytes, err := writer(b.v)
 	b.start = 0
 	b.end = int32(nBytes)
+	if b.end > int32(len(b.v)) {
+		b.end = int32(len(b.v))
+	}
 	return err
 }