5 files changed, 27 insertions, 13 deletions
diff --git a/include/gras/CMakeLists.txt b/include/gras/CMakeLists.txt
index 1ab9a4c..7f37b1a 100644
--- a/include/gras/CMakeLists.txt
+++ b/include/gras/CMakeLists.txt
@@ -3,6 +3,7 @@
 ########################################################################
 install(FILES
 
+    exception.i
     chrono.hpp
     block.hpp
     block.i
diff --git a/include/gras/buffer_queue.hpp b/include/gras/buffer_queue.hpp
index da8de41..0a68030 100644
--- a/include/gras/buffer_queue.hpp
+++ b/include/gras/buffer_queue.hpp
@@ -17,6 +17,8 @@ typedef boost::shared_ptr<BufferQueue> BufferQueueSptr;
 //! Buffer Queue is an interface enabling us to create custom buffer allocators.
 struct BufferQueue
 {
+    //! virtual destructor
+    virtual ~BufferQueue(void){}
 
     /*!
      * Create a buffer queue object using the pool allocator.
diff --git a/include/gras/element.i b/include/gras/element.i
index ecfa898..bcf07c2 100644
--- a/include/gras/element.i
+++ b/include/gras/element.i
@@ -13,23 +13,11 @@ namespace gras
 }
 
 ////////////////////////////////////////////////////////////////////////
-// remove base class warning
+// remove base class warning -- boost::shared_ptr<ElementImpl>
 ////////////////////////////////////////////////////////////////////////
 #pragma SWIG nowarn=401
 
 ////////////////////////////////////////////////////////////////////////
-// http://www.swig.org/Doc2.0/Library.html#Library_stl_exceptions
-////////////////////////////////////////////////////////////////////////
-%include <exception.i>
-
-%exception
-{
-    try{$action}
-    catch (const std::exception& e)
-    {SWIG_exception(SWIG_RuntimeError, e.what());}
-}
-
-////////////////////////////////////////////////////////////////////////
 // Export swig element comprehension
 ////////////////////////////////////////////////////////////////////////
 %include <std_string.i>
diff --git a/include/gras/exception.i b/include/gras/exception.i
new file mode 100644
index 0000000..5ed2cd3
--- /dev/null
+++ b/include/gras/exception.i
@@ -0,0 +1,18 @@
+// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
+
+#ifndef INCLUDED_GRAS_EXCEPTION_I
+#define INCLUDED_GRAS_EXCEPTION_I
+
+////////////////////////////////////////////////////////////////////////
+// http://www.swig.org/Doc2.0/Library.html#Library_stl_exceptions
+////////////////////////////////////////////////////////////////////////
+%include <exception.i>
+
+%exception
+{
+    try{$action}
+    catch (const std::exception& e)
+    {SWIG_exception(SWIG_RuntimeError, e.what());}
+}
+
+#endif /*INCLUDED_GRAS_EXCEPTION_I*/
diff --git a/include/gras/tags.i b/include/gras/tags.i
index 33838e2..bf2bdb4 100644
--- a/include/gras/tags.i
+++ b/include/gras/tags.i
@@ -7,6 +7,11 @@
 #include <gras/tags.hpp>
 %}
 
+////////////////////////////////////////////////////////////////////////
+// remove base class warning -- boost::less_than_comparable<Tag>
+////////////////////////////////////////////////////////////////////////
+#pragma SWIG nowarn=401
+
 %include <gras/gras.hpp>
 %include <gras/tags.hpp>
 %import <gras/sbuffer.i>