Python - fix compilation error when using -extranative and -builtin.

Closes #816

CHANGES.current

@@ -5,6 +5,9 @@ See the RELEASENOTES file for a summary of changes in each release.
 Version 3.0.11 (in progress)
 ============================
 
+2016-11-02: wsfulton
+            [Python] Issue #816 - fix compilation error when using -extranative and -builtin.
+
 2016-11-02: liorgold
             Patch #741 - Add support for C++11 alias templates, see updated CPlusPlus11.html
             documentation.

Examples/test-suite/python/Makefile.in

@@ -62,6 +62,7 @@ CPP_TEST_CASES += \
 	python_destructor_exception \
 	python_director \
 	python_docstring \
+	python_extranative \
 	python_nondynamic \
 	python_overload_simple_cast \
 	python_pickle \

Examples/test-suite/python/python_extranative_runme.py

@@ -0,0 +1,11 @@
+import python_extranative
+
+vs = python_extranative.make_vector_string()
+if not isinstance(vs, python_extranative.VectorString):
+    # will be of type tuple if extranative not working
+    raise RuntimeError("Not of type VectorString")
+
+for s1, s2 in zip(vs, ["one", "two"]):
+    if s1 != s2:
+        raise RuntimeError("Mismatch: " + s1 + " " + s2)
+

Examples/test-suite/python_extranative.i

@@ -0,0 +1,16 @@
+%module(extranative="1") python_extranative
+
+%include <std_vector.i>
+%include <std_string.i>
+
+%template(VectorString) std::vector<std::string>;
+
+%inline %{
+std::vector<std::string> make_vector_string() {
+  std::vector<std::string> vs;
+  vs.push_back("one");
+  vs.push_back("two");
+  return vs;
+}
+%}
+

Lib/python/pycontainer.swg

@@ -1012,7 +1012,7 @@ namespace swig {
 %#ifdef SWIG_PYTHON_EXTRA_NATIVE_CONTAINERS
       swig_type_info *desc = swig::type_info<sequence>();
       if (desc && desc->clientdata) {
-	return SWIG_NewPointerObj(new sequence(seq), desc, SWIG_POINTER_OWN);
+	return SWIG_InternalNewPointerObj(new sequence(seq), desc, SWIG_POINTER_OWN);
       }
 %#endif
       size_type size = seq.size();