AT Converter: Bugfix to prevent a crash when no link to MC is present

analysis/common/analysis_tree_converter/CbmRecEventHeaderConverter.cxx

@@ -80,7 +80,8 @@ void CbmRecEventHeaderConverter::ProcessData(CbmEvent* event)
 
     tStartTS = fTimeSlice->GetStartTime();
 
-    if (event->GetMatch()) match_weight = float(event->GetMatch()->GetMatchedLink().GetWeight());
+    if (event->GetMatch() && event->GetMatch()->GetNofLinks() > 0)
+      match_weight = float(event->GetMatch()->GetMatchedLink().GetWeight());
     else
       match_weight = 0.;
   }

analysis/common/analysis_tree_converter/CbmSimEventHeaderConverter.cxx

@@ -59,11 +59,7 @@ void CbmSimEventHeaderConverter::ProcessData(CbmEvent* event)
   FairMCEventHeader* cbm_header {nullptr};
   int file_id {0}, event_id {0};
 
-  if (event) {
-    if (!event->GetMatch()) {
-      LOG(error) << "No match to SimEvent!";
-      return;
-    }
+  if (event && event->GetMatch() && event->GetMatch()->GetNofLinks() > 0) {
     const auto& link = event->GetMatch()->GetMatchedLink();
     file_id          = event->GetMatch()->GetMatchedLink().GetFile();
     event_id         = event->GetMatch()->GetMatchedLink().GetEntry();

analysis/common/analysis_tree_converter/CbmSimTracksConverter.cxx

@@ -108,9 +108,7 @@ void CbmSimTracksConverter::ProcessData(CbmEvent* event)
   const auto& branch = out_config_->GetBranchConfig(out_branch_);
 
   int file_id {0}, event_id {0};
-  if (event) {
-    auto match = event->GetMatch();
-    if (!match) return;
+  if (event && event->GetMatch() && event->GetMatch()->GetNofLinks() > 0) {
     file_id  = event->GetMatch()->GetMatchedLink().GetFile();
     event_id = event->GetMatch()->GetMatchedLink().GetEntry();
   }

analysis/common/analysis_tree_converter/CbmStsTracksConverter.cxx

@@ -246,7 +246,7 @@ void CbmStsTracksConverter::MapTracks(CbmEvent* event)
   CbmTrackMatchNew* match {nullptr};
 
   int file_id {0}, event_id {0};
-  if (event) {
+  if (event && event->GetMatch()->GetNofLinks() > 0) {
     file_id  = event->GetMatch()->GetMatchedLink().GetFile();
     event_id = event->GetMatch()->GetMatchedLink().GetEntry();
   }

analysis/common/analysis_tree_converter/CbmTofHitsConverter.cxx

@@ -85,9 +85,7 @@ void CbmTofHitsConverter::ProcessData(CbmEvent* event)
   auto sim_tracks_map = GetMatchMap(mc_tracks_);
 
   int file_id {0}, event_id {0};
-  if (event) {
-    auto match = event->GetMatch();
-    if (!match) return;
+  if (event && event->GetMatch() && event->GetMatch()->GetNofLinks() > 0) {
     file_id  = event->GetMatch()->GetMatchedLink().GetFile();
     event_id = event->GetMatch()->GetMatchedLink().GetEntry();
   }