3 files changed, 6 insertions, 0 deletions
diff --git a/tests/cxx/hybrid/polymorphism/any-type/driver.cxx b/tests/cxx/hybrid/polymorphism/any-type/driver.cxx
index cf39e15..62aaa79 100644
--- a/tests/cxx/hybrid/polymorphism/any-type/driver.cxx
+++ b/tests/cxx/hybrid/polymorphism/any-type/driver.cxx
@@ -56,4 +56,6 @@ main (int argc, char* argv[])
   root_s.post ();
 
   delete r;
+
+  return 0;
 }
diff --git a/tests/cxx/hybrid/polymorphism/enumeration/driver.cxx b/tests/cxx/hybrid/polymorphism/enumeration/driver.cxx
index ff8703e..fea2d8b 100644
--- a/tests/cxx/hybrid/polymorphism/enumeration/driver.cxx
+++ b/tests/cxx/hybrid/polymorphism/enumeration/driver.cxx
@@ -64,4 +64,6 @@ main (int argc, char* argv[])
   root_s.post ();
 
   delete r;
+
+  return 0;
 }
diff --git a/tests/cxx/hybrid/polymorphism/multischema/driver.cxx b/tests/cxx/hybrid/polymorphism/multischema/driver.cxx
index baf8d74..3347142 100644
--- a/tests/cxx/hybrid/polymorphism/multischema/driver.cxx
+++ b/tests/cxx/hybrid/polymorphism/multischema/driver.cxx
@@ -57,4 +57,6 @@ main (int argc, char* argv[])
   root_s.post ();
 
   delete r;
+
+  return 0;
 }