gets through weakref with zero leaks

from_cpython/Include/modsupport.h

@@ -41,7 +41,7 @@ PyAPI_FUNC(int) PyArg_VaParseTupleAndKeywords(PyObject *, PyObject *,
                                                   const char *, char **, va_list) PYSTON_NOEXCEPT;
 PyAPI_FUNC(PyObject *) Py_VaBuildValue(const char *, va_list) PYSTON_NOEXCEPT;
 
-PyAPI_FUNC(int) PyModule_AddObject(PyObject *, const char *, PyObject *) PYSTON_NOEXCEPT;
+PyAPI_FUNC(int) PyModule_AddObject(PyObject *, const char *, STOLEN(PyObject *)) PYSTON_NOEXCEPT;
 PyAPI_FUNC(int) PyModule_AddIntConstant(PyObject *, const char *, long) PYSTON_NOEXCEPT;
 PyAPI_FUNC(int) PyModule_AddStringConstant(PyObject *, const char *, const char *) PYSTON_NOEXCEPT;
 #define PyModule_AddIntMacro(m, c) PyModule_AddIntConstant(m, #c, c)

src/capi/modsupport.cpp

@@ -442,7 +442,8 @@ extern "C" int PyModule_AddObject(PyObject* _m, const char* name, PyObject* valu
     BoxedModule* m = static_cast<BoxedModule*>(_m);
     assert(m->cls == module_cls);
 
-    m->setattr(internStringMortal(name), value, NULL);
+    m->setattr(autoDecref(internStringMortal(name)), value, NULL);
+    Py_DECREF(value);
     return 0;
 }
 

src/capi/typeobject.cpp

@@ -2638,6 +2638,7 @@ static int add_methods(PyTypeObject* type, PyMethodDef* meth) noexcept {
             return -1;
         type->setattr(name, descr, NULL);
         Py_DECREF(descr);
+        Py_DECREF(name);
     }
     return 0;
 }
@@ -3380,6 +3381,7 @@ extern "C" void PyType_GiveHcAttrsDictDescr(PyTypeObject* cls) noexcept {
 extern "C" int PyType_Ready(PyTypeObject* cls) noexcept {
     ASSERT(!cls->is_pyston_class, "should not call this on Pyston classes");
 
+    _Py_INC_REFTOTAL;
     classes.push_back(cls);
 
     // unhandled fields: