1 files changed, 3 insertions, 2 deletions
diff --git a/utils/unittest/googletest/include/gtest/gtest.h b/utils/unittest/googletest/include/gtest/gtest.h
index 1734c4432e..07ed92b57c 100644
--- a/utils/unittest/googletest/include/gtest/gtest.h
+++ b/utils/unittest/googletest/include/gtest/gtest.h
@@ -910,7 +910,7 @@ class GTEST_API_ TestCase {
 class Environment {
  public:
   // The d'tor is virtual as we need to subclass Environment.
-  virtual ~Environment() {}
+  virtual ~Environment();
 
   // Override this to define how to set up the environment.
   virtual void SetUp() {}
@@ -928,7 +928,7 @@ class Environment {
 // the order the corresponding events are fired.
 class TestEventListener {
  public:
-  virtual ~TestEventListener() {}
+  virtual ~TestEventListener();
 
   // Fired before any test activity starts.
   virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
@@ -980,6 +980,7 @@ class TestEventListener {
 // comments about each method please see the definition of TestEventListener
 // above.
 class EmptyTestEventListener : public TestEventListener {
+  virtual void anchor();
  public:
   virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
   virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,