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-rw-r--r--src/org/traccar/protocol/Gt06ProtocolDecoder.java4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/org/traccar/protocol/Gt06ProtocolDecoder.java
index fde34c8f7..018b42dc9 100644
--- a/src/org/traccar/protocol/Gt06ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -197,7 +197,9 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
position.set(Event.KEY_MNC, buf.readUnsignedByte());
position.set(Event.KEY_LAC, buf.readUnsignedShort());
position.set(Event.KEY_CELL, buf.readUnsignedShort() << 8 + buf.readUnsignedByte());
- buf.skipBytes(lbsLength - 9);
+ if (lbsLength > 0) {
+ buf.skipBytes(lbsLength - 9);
+ }
// Status
if (type == MSG_GPS_LBS_STATUS_1 || type == MSG_GPS_LBS_STATUS_2 || type == MSG_GPS_LBS_STATUS_3) {