X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d3a5b5e5113cf4438faf96f6dc442240c5b9d085..403af5e6247ce6452b721f418a5b41e4548efac4:/src/mc/ModelChecker.cpp

diff --git a/src/mc/ModelChecker.cpp b/src/mc/ModelChecker.cpp
index 67eb84b45b..53ebd7efbd 100644
--- a/src/mc/ModelChecker.cpp
+++ b/src/mc/ModelChecker.cpp
@@ -34,6 +34,7 @@
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_ModelChecker, mc, "ModelChecker");
 
 ::simgrid::mc::ModelChecker* mc_model_checker = nullptr;
+extern std::string _sg_mc_dot_output_file;
 
 using simgrid::mc::remote;
 
@@ -96,7 +97,7 @@ void ModelChecker::start()
 
   process_->init();
 
-  if ((_sg_mc_dot_output_file != nullptr) && (_sg_mc_dot_output_file[0] != '\0'))
+  if (not _sg_mc_dot_output_file.empty())
     MC_init_dot_output();
 
   setup_ignore();