From 9ce4f8903c6a9891f5be7913556a4b4e08f27a23 Mon Sep 17 00:00:00 2001
From: Lucas Mello Schnorr <schnorr@inf.ufrgs.br>
Date: Tue, 19 Jan 2016 08:55:03 -0200
Subject: [PATCH] [action replay] check second optional parameter before
 parsing datatype in gatherv

---
 src/smpi/smpi_replay.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/smpi/smpi_replay.c b/src/smpi/smpi_replay.c
index 3c3c922b9b..bee8307852 100644
--- a/src/smpi/smpi_replay.c
+++ b/src/smpi/smpi_replay.c
@@ -756,7 +756,7 @@ static void action_gatherv(const char *const *action) {
   int i=0,recv_sum=0;
 
   MPI_Datatype MPI_CURRENT_TYPE2;
-  if(action[4+comm_size]) {
+  if(action[4+comm_size] && action[5+comm_size]) {
     MPI_CURRENT_TYPE=decode_datatype(action[4+comm_size]);
     MPI_CURRENT_TYPE2=decode_datatype(action[5+comm_size]);
   } else {
-- 
2.20.1