From f4f66f8fa94fe5a99aa918ed59d4895ac564c02d Mon Sep 17 00:00:00 2001
From: rays <rays@rays-glaptop.roam.corp.google.com>
Date: Sat, 15 Jul 2017 17:21:47 -0700
Subject: [PATCH] Fixed regression of issue #644

---
 lstm/lstmtrainer.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lstm/lstmtrainer.h b/lstm/lstmtrainer.h
index 41ea32d68c..65df18afd6 100644
--- a/lstm/lstmtrainer.h
+++ b/lstm/lstmtrainer.h
@@ -301,6 +301,7 @@ class LSTMTrainer : public LSTMRecognizer {
   // language model. trainer is the model that is restored.
   bool ReadTrainingDump(const GenericVector<char>& data,
                         LSTMTrainer* trainer) const {
+    if (data.empty()) return false;
     return ReadSizedTrainingDump(&data[0], data.size(), trainer);
   }
   bool ReadSizedTrainingDump(const char* data, int size,