From e608e1d6012e2cf5bfecaaf068a730633dac8a70 Mon Sep 17 00:00:00 2001
From: winger <jackey.zhang@woqutech.com>
Date: Thu, 26 Jul 2018 12:33:10 +0800
Subject: [PATCH] fix bug #776

---
 .../com/taobao/tddl/dbsync/binlog/event/GtidLogEvent.java    | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/event/GtidLogEvent.java b/dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/event/GtidLogEvent.java
index b645e954..5c2678b5 100644
--- a/dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/event/GtidLogEvent.java
+++ b/dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/event/GtidLogEvent.java
@@ -44,13 +44,14 @@ public class GtidLogEvent extends LogEvent {
         gno = buffer.getLong64();
 
         // support gtid lastCommitted and sequenceNumber
-        // 42 = 1+16+8+1+8+8
-        if (buffer.capacity() > 42 && buffer.getUint8() == LOGICAL_TIMESTAMP_TYPE_CODE) {
+        // fix bug #776
+        if (buffer.hasRemaining() && buffer.remaining() > 16 && buffer.getUint8() == LOGICAL_TIMESTAMP_TYPE_CODE) {
             lastCommitted = buffer.getLong64();
             sequenceNumber = buffer.getLong64();
         }
 
 
+
         // ignore gtid info read
         // sid.copy_from((uchar *)ptr_buffer);
         // ptr_buffer+= ENCODED_SID_LENGTH;