diff --git a/include/sta/Search.hh b/include/sta/Search.hh
index 153463e2..841dbe6b 100644
--- a/include/sta/Search.hh
+++ b/include/sta/Search.hh
@@ -861,7 +861,7 @@ public:
                        const MinMax *min_max) override;
 
 protected:
-  RequiredCmp *required_cmp_;
+  RequiredCmp required_cmp_;
   VisitPathEnds *visit_path_ends_;
 };
 
diff --git a/search/Search.cc b/search/Search.cc
index 42309866..ee735a0c 100644
--- a/search/Search.cc
+++ b/search/Search.cc
@@ -3293,40 +3293,24 @@ Search::seedInvalidRequireds()
 class FindEndRequiredVisitor : public PathEndVisitor
 {
 public:
-  FindEndRequiredVisitor(RequiredCmp *required_cmp,
+  FindEndRequiredVisitor(RequiredCmp &required_cmp,
                          const StaState *sta);
   FindEndRequiredVisitor(const StaState *sta);
-  ~FindEndRequiredVisitor() override;
   PathEndVisitor *copy() const override;
   void visit(PathEnd *path_end) override;
 
 protected:
   const StaState *sta_;
-  RequiredCmp *required_cmp_;
-  bool own_required_cmp_;
+  RequiredCmp &required_cmp_;
 };
 
-FindEndRequiredVisitor::FindEndRequiredVisitor(RequiredCmp *required_cmp,
+FindEndRequiredVisitor::FindEndRequiredVisitor(RequiredCmp &required_cmp,
                                                const StaState *sta) :
   sta_(sta),
-  required_cmp_(required_cmp),
-  own_required_cmp_(false)
+  required_cmp_(required_cmp)
 {
 }
 
-FindEndRequiredVisitor::FindEndRequiredVisitor(const StaState *sta) :
-  sta_(sta),
-  required_cmp_(new RequiredCmp),
-  own_required_cmp_(true)
-{
-}
-
-FindEndRequiredVisitor::~FindEndRequiredVisitor()
-{
-  if (own_required_cmp_)
-    delete required_cmp_;
-}
-
 PathEndVisitor *
 FindEndRequiredVisitor::copy() const
 {
@@ -3341,7 +3325,7 @@ FindEndRequiredVisitor::visit(PathEnd *path_end)
     const MinMax *min_max = path->minMax(sta_)->opposite();
     size_t path_index = path->pathIndex(sta_);
     Required required = path_end->requiredTime(sta_);
-    required_cmp_->requiredSet(path_index, required, min_max, sta_);
+    required_cmp_.requiredSet(path_index, required, min_max, sta_);
   }
 }
 
@@ -3351,7 +3335,7 @@ Search::seedRequired(Vertex *vertex)
   debugPrint(debug_, "search", 2, "required seed {}",
              vertex->to_string(this));
   RequiredCmp required_cmp;
-  FindEndRequiredVisitor seeder(&required_cmp, this);
+  FindEndRequiredVisitor seeder(required_cmp, this);
   required_cmp.requiredsInit(vertex, this);
   visit_path_ends_->visitPathEnds(vertex, &seeder);
   // Enqueue fanin vertices for back-propagating required times.
@@ -3363,7 +3347,7 @@ void
 Search::seedRequiredEnqueueFanin(Vertex *vertex)
 {
   RequiredCmp required_cmp;
-  FindEndRequiredVisitor seeder(&required_cmp, this);
+  FindEndRequiredVisitor seeder(required_cmp, this);
   required_cmp.requiredsInit(vertex, this);
   visit_path_ends_->visitPathEnds(vertex, &seeder);
   // Enqueue fanin vertices for back-propagating required times.
@@ -3438,21 +3422,18 @@ RequiredCmp::required(size_t path_index)
 
 RequiredVisitor::RequiredVisitor(const StaState *sta) :
   PathVisitor(sta),
-  required_cmp_(new RequiredCmp),
   visit_path_ends_(new VisitPathEnds(sta))
 {
 }
 
 RequiredVisitor::RequiredVisitor(const RequiredVisitor &required_visitor) :
   PathVisitor(required_visitor.search()->evalPred(), true, &required_visitor),
-  required_cmp_(new RequiredCmp),
   visit_path_ends_(new VisitPathEnds(&required_visitor))
 {
 }
 
 RequiredVisitor::~RequiredVisitor()
 {
-  delete required_cmp_;
   delete visit_path_ends_;
 }
 
@@ -3467,7 +3448,7 @@ RequiredVisitor::visit(Vertex *vertex)
 {
   debugPrint(debug_, "search", 2, "find required {}",
              vertex->to_string(this));
-  required_cmp_->requiredsInit(vertex, this);
+  required_cmp_.requiredsInit(vertex, this);
   // Back propagate requireds from fanout.
   visitFanoutPaths(vertex);
   // Check for constraints at endpoints that set required times.
@@ -3475,7 +3456,7 @@ RequiredVisitor::visit(Vertex *vertex)
     FindEndRequiredVisitor seeder(required_cmp_, this);
     visit_path_ends_->visitPathEnds(vertex, &seeder);
   }
-  bool changed = required_cmp_->requiredsSave(vertex, this);
+  bool changed = required_cmp_.requiredsSave(vertex, this);
   search_->tnsInvalid(vertex);
 
   if (changed)
@@ -3521,8 +3502,8 @@ RequiredVisitor::visitFromToPath(const Pin *,
                  delayAsString(arc_delay, this),
                  delayAsString(from_required, this),
                  min_max == MinMax::max() ? "<" : ">",
-                 delayAsString(required_cmp_->required(path_index), this));
-      required_cmp_->requiredSet(path_index, from_required, req_min, this);
+                 delayAsString(required_cmp_.required(path_index), this));
+      required_cmp_.requiredSet(path_index, from_required, req_min, this);
     }
     else {
       if (search_->crprApproxMissingRequireds()) {
@@ -3545,8 +3526,8 @@ RequiredVisitor::visitFromToPath(const Pin *,
                        delayAsString(arc_delay, this),
                        delayAsString(from_required, this),
                        min_max == MinMax::max() ? "<" : ">",
-                       delayAsString(required_cmp_->required(path_index), this));
-            required_cmp_->requiredSet(path_index, from_required, req_min, this);
+                       delayAsString(required_cmp_.required(path_index), this));
+            required_cmp_.requiredSet(path_index, from_required, req_min, this);
             break;
           }
         }