1 files changed, 9 insertions, 8 deletions

diff --git a/lib/Core/StatsTracker.h b/lib/Core/StatsTracker.h
index 23abac06..e352bb91 100644
--- a/lib/Core/StatsTracker.h
+++ b/lib/Core/StatsTracker.h
@@ -12,6 +12,7 @@
 
 #include "CallPathManager.h"
 
+#include <memory>
 #include <set>
 
 namespace llvm {
@@ -23,7 +24,7 @@ namespace llvm {
 
 namespace klee {
   class ExecutionState;
-  class Executor;  
+  class Executor;
   class InstructionInfoTable;
   class InterpreterHandler;
   struct KInstruction;
@@ -36,13 +37,13 @@ namespace klee {
     Executor &executor;
     std::string objectFilename;
 
-    llvm::raw_fd_ostream *statsFile, *istatsFile;
+    std::unique_ptr<llvm::raw_fd_ostream> statsFile, istatsFile;
     double startWallTime;
-    
+
     unsigned numBranches;
     unsigned fullBranches, partialBranches;
 
-    CallPathManager callPathManager;    
+    CallPathManager callPathManager;
 
     bool updateMinDistToUncovered;
 
@@ -59,20 +60,20 @@ namespace klee {
   public:
     StatsTracker(Executor &_executor, std::string _objectFilename,
                  bool _updateMinDistToUncovered);
-    ~StatsTracker();
+    ~StatsTracker() = default;
 
     // called after a new StackFrame has been pushed (for callpath tracing)
     void framePushed(ExecutionState &es, StackFrame *parentFrame);
 
-    // called after a StackFrame has been popped 
+    // called after a StackFrame has been popped
     void framePopped(ExecutionState &es);
 
     // called when some side of a branch has been visited. it is
     // imperative that this be called when the statistics index is at
     // the index for the branch itself.
-    void markBranchVisited(ExecutionState *visitedTrue, 
+    void markBranchVisited(ExecutionState *visitedTrue,
                            ExecutionState *visitedFalse);
-    
+
     // called when execution is done and stats files should be flushed
     void done();