X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cbd8dae6d524fc62b0fb5fcf7b2604e98f953615..b8df87e176f27b25534f27d7e240defa32ca35bc:/examples/s4u/replay-comm/s4u-replay-comm.cpp

diff --git a/examples/s4u/replay-comm/s4u-replay-comm.cpp b/examples/s4u/replay-comm/s4u-replay-comm.cpp
index 9eb3379c11..491c3a8e30 100644
--- a/examples/s4u/replay-comm/s4u-replay-comm.cpp
+++ b/examples/s4u/replay-comm/s4u-replay-comm.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009-2018. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -30,8 +30,8 @@ class Replayer {
 public:
   explicit Replayer(std::vector<std::string> args)
   {
-    const char* actor_name     = args[0].c_str();
-    const char* trace_filename = args[1].c_str();
+    const char* actor_name     = args.at(0).c_str();
+    const char* trace_filename = args.size() > 1 ? args[1].c_str() : nullptr;
     simgrid::xbt::replay_runner(actor_name, trace_filename);
   }