More ref fixes. working on functools_test

from_cpython/Include/listobject.h

@@ -49,7 +49,7 @@ PyAPI_DATA(PyTypeObject*) list_cls;
 
 PyAPI_FUNC(PyObject *) PyList_New(Py_ssize_t size) PYSTON_NOEXCEPT;
 PyAPI_FUNC(Py_ssize_t) PyList_Size(PyObject *) PYSTON_NOEXCEPT;
-PyAPI_FUNC(PyObject *) PyList_GetItem(PyObject *, Py_ssize_t) PYSTON_NOEXCEPT;
+PyAPI_FUNC(BORROWED(PyObject *)) PyList_GetItem(PyObject *, Py_ssize_t) PYSTON_NOEXCEPT;
 PyAPI_FUNC(int) PyList_SetItem(PyObject *, Py_ssize_t, PyObject *) PYSTON_NOEXCEPT;
 PyAPI_FUNC(int) PyList_Insert(PyObject *, Py_ssize_t, PyObject *) PYSTON_NOEXCEPT;
 PyAPI_FUNC(int) PyList_Append(PyObject *, PyObject *) PYSTON_NOEXCEPT;

src/capi/abstract.cpp

@@ -659,6 +659,7 @@ extern "C" PyObject* PyObject_CallMethod(PyObject* o, const char* name, const ch
             argspec = ArgPassSpec(1);
     } else
         argspec = ArgPassSpec(0);
+    AUTO_XDECREF(args);
     retval = callattrInternal<ExceptionStyle::CAPI, NOT_REWRITABLE>(
         o, autoDecref(internStringMortal(name)), CLASS_OR_INST, NULL, argspec, args, NULL, NULL, NULL, NULL);
     if (!retval && !PyErr_Occurred())

src/runtime/import.cpp

@@ -67,6 +67,7 @@ extern "C" PyObject* _PyImport_LoadDynamicModule(char* name, char* pathname, FIL
 
 extern "C" PyObject* load_source_module(char* name, char* pathname, FILE* fp) noexcept {
     BoxedString* name_boxed = boxString(name);
+    AUTO_DECREF(name_boxed);
     try {
         BoxedModule* module = createModule(name_boxed, pathname);
         AST_Module* ast = caching_parse_file(pathname, /* future_flags = */ 0);
@@ -79,7 +80,7 @@ extern "C" PyObject* load_source_module(char* name, char* pathname, FILE* fp) no
         }
         if (Py_VerboseFlag)
             PySys_WriteStderr("import %s # from %s\n", name, pathname);
-        return r;
+        return incref(r);
     } catch (ExcInfo e) {
         removeModule(name_boxed);
         setCAPIException(e);

src/runtime/list.cpp

@@ -255,7 +255,7 @@ extern "C" Box* listGetitemInt(BoxedList* self, BoxedInt* slice) {
     return incref(listGetitemUnboxed(self, slice->n));
 }
 
-extern "C" PyObject* PyList_GetItem(PyObject* op, Py_ssize_t i) noexcept {
+extern "C" BORROWED(PyObject*) PyList_GetItem(PyObject* op, Py_ssize_t i) noexcept {
     RELEASE_ASSERT(PyList_Check(op), "");
     RELEASE_ASSERT(i >= 0, ""); // unlike list.__getitem__, PyList_GetItem doesn't do index wrapping
     try {