Use it in mmap, sha1, sha2, and sha3.

Author: ZeroIntensity

Modules/mmapmodule.c

@@ -128,13 +128,6 @@ typedef struct {
 
 #define mmap_object_CAST(op)    ((mmap_object *)(op))
 
-static int
-mmap_object_traverse(PyObject *op, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(op));
-    return 0;
-}
-
 static void
 mmap_object_dealloc(PyObject *op)
 {
@@ -1499,7 +1492,7 @@ static PyType_Slot mmap_object_slots[] = {
     {Py_tp_members, mmap_object_members},
     {Py_tp_getset, mmap_object_getset},
     {Py_tp_getattro, PyObject_GenericGetAttr},
-    {Py_tp_traverse, mmap_object_traverse},
+    {Py_tp_traverse, _PyObject_VisitType},
 
     /* as sequence */
     {Py_sq_length, mmap_length},

Modules/sha1module.c

@@ -81,12 +81,6 @@ newSHA1object(SHA1State *st)
 
 
 /* Internal methods for a hash object */
-static int
-SHA1_traverse(PyObject *ptr, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(ptr));
-    return 0;
-}
 
 static void
 SHA1_dealloc(PyObject *op)
@@ -247,7 +241,7 @@ static PyType_Slot sha1_type_slots[] = {
     {Py_tp_dealloc, SHA1_dealloc},
     {Py_tp_methods, SHA1_methods},
     {Py_tp_getset, SHA1_getseters},
-    {Py_tp_traverse, SHA1_traverse},
+    {Py_tp_traverse, _PyObject_VisitType},
     {0,0}
 };
 

Modules/sha2module.c

@@ -165,13 +165,6 @@ newSHA512object(sha2_state *state)
 
 /* Internal methods for our hash objects. */
 
-static int
-SHA2_traverse(PyObject *ptr, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(ptr));
-    return 0;
-}
-
 static void
 SHA256_dealloc(PyObject *op)
 {
@@ -519,15 +512,15 @@ static PyType_Slot sha256_types_slots[] = {
     {Py_tp_dealloc, SHA256_dealloc},
     {Py_tp_methods, SHA256_methods},
     {Py_tp_getset, SHA256_getseters},
-    {Py_tp_traverse, SHA2_traverse},
+    {Py_tp_traverse, _PyObject_VisitType},
     {0,0}
 };
 
 static PyType_Slot sha512_type_slots[] = {
     {Py_tp_dealloc, SHA512_dealloc},
     {Py_tp_methods, SHA512_methods},
     {Py_tp_getset, SHA512_getseters},
-    {Py_tp_traverse, SHA2_traverse},
+    {Py_tp_traverse, _PyObject_VisitType},
     {0,0}
 };
 

Modules/sha3module.c

@@ -226,13 +226,6 @@ SHA3_dealloc(PyObject *self)
     Py_DECREF(tp);
 }
 
-static int
-SHA3_traverse(PyObject *self, visitproc visit, void *arg)
-{
-    Py_VISIT(Py_TYPE(self));
-    return 0;
-}
-
 /* External methods for a hash object */
 
 
@@ -424,7 +417,7 @@ static PyGetSetDef SHA3_getseters[] = {
     static PyType_Slot type_slots_obj[] = { \
         {Py_tp_clear, SHA3_clear}, \
         {Py_tp_dealloc, SHA3_dealloc}, \
-        {Py_tp_traverse, SHA3_traverse}, \
+        {Py_tp_traverse, _PyObject_VisitType}, \
         {Py_tp_doc, (char*)type_doc}, \
         {Py_tp_methods, type_methods}, \
         {Py_tp_getset, type_getseters}, \