Index: openmp/tools/archer/ompt-tsan.cpp
===================================================================
--- openmp/tools/archer/ompt-tsan.cpp
+++ openmp/tools/archer/ompt-tsan.cpp
@@ -1001,20 +1001,22 @@
   if (ndeps > 0) {
     // Copy the data to use it in task_switch and task_end.
     TaskData *Data = ToTaskData(task_data);
-    if (!Data->Parent->DependencyMap)
+    if (Data->Parent != nullptr && !Data->Parent->DependencyMap)
       Data->Parent->DependencyMap =
           new std::unordered_map<void *, DependencyData *>();
     Data->Dependencies =
         (TaskDependency *)malloc(sizeof(TaskDependency) * ndeps);
     Data->DependencyCount = ndeps;
     for (int i = 0; i < ndeps; i++) {
-      auto ret = Data->Parent->DependencyMap->insert(
-          std::make_pair(deps[i].variable.ptr, nullptr));
-      if (ret.second) {
-        ret.first->second = DependencyData::New();
+      if (Data->Parent != nullptr) {
+        auto ret = Data->Parent->DependencyMap->insert(
+            std::make_pair(deps[i].variable.ptr, nullptr));
+        if (ret.second) {
+          ret.first->second = DependencyData::New();
+        }
+        new ((void *)(Data->Dependencies + i))
+            TaskDependency(ret.first->second, deps[i].dependence_type);
       }
-      new ((void *)(Data->Dependencies + i))
-          TaskDependency(ret.first->second, deps[i].dependence_type);
     }
 
     // This callback is executed before this task is first started.