Merged revisions 56467-56482 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

................
  r56477 | martin.v.loewis | 2007-07-21 09:04:38 +0200 (Sa, 21 Jul 2007) | 11 lines

  Merged revisions 56466-56476 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r56476 | martin.v.loewis | 2007-07-21 08:55:02 +0200 (Sa, 21 Jul 2007) | 4 lines

    PEP 3123: Provide forward compatibility with Python 3.0, while keeping
    backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
    PyVarObject_HEAD_INIT.
  ........
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  r56478 | martin.v.loewis | 2007-07-21 09:47:23 +0200 (Sa, 21 Jul 2007) | 2 lines

  PEP 3123: Use proper C inheritance for PyObject.
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  r56479 | martin.v.loewis | 2007-07-21 10:06:55 +0200 (Sa, 21 Jul 2007) | 3 lines

  Add longintrepr.h to Python.h, so that the compiler can
  see that PyFalse is really some kind of PyObject*.
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  r56480 | martin.v.loewis | 2007-07-21 10:47:18 +0200 (Sa, 21 Jul 2007) | 2 lines

  Qualify SHIFT, MASK, BASE.
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  r56482 | martin.v.loewis | 2007-07-21 19:10:57 +0200 (Sa, 21 Jul 2007) | 2 lines

  Correctly refer to _ob_next.
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diff --git a/Objects/structseq.c b/Objects/structseq.c
index 7ac2a1f..5e57f1f 100644
--- a/Objects/structseq.c
+++ b/Objects/structseq.c
@@ -13,17 +13,17 @@
    They are only allowed for indices < n_visible_fields. */
 char *PyStructSequence_UnnamedField = "unnamed field";
 
-#define VISIBLE_SIZE(op) ((op)->ob_size)
+#define VISIBLE_SIZE(op) Py_Size(op)
 #define VISIBLE_SIZE_TP(tp) PyInt_AsLong( \
                       PyDict_GetItemString((tp)->tp_dict, visible_length_key))
 
 #define REAL_SIZE_TP(tp) PyInt_AsLong( \
                       PyDict_GetItemString((tp)->tp_dict, real_length_key))
-#define REAL_SIZE(op) REAL_SIZE_TP((op)->ob_type)
+#define REAL_SIZE(op) REAL_SIZE_TP(Py_Type(op))
 
 #define UNNAMED_FIELDS_TP(tp) PyInt_AsLong( \
                       PyDict_GetItemString((tp)->tp_dict, unnamed_fields_key))
-#define UNNAMED_FIELDS(op) UNNAMED_FIELDS_TP((op)->ob_type)
+#define UNNAMED_FIELDS(op) UNNAMED_FIELDS_TP(Py_Type(op))
 
 
 PyObject *
@@ -32,7 +32,7 @@
 	PyStructSequence *obj;
        
 	obj = PyObject_New(PyStructSequence, type);
-	obj->ob_size = VISIBLE_SIZE_TP(type);
+	Py_Size(obj) = VISIBLE_SIZE_TP(type);
 
 	return (PyObject*) obj;
 }
@@ -274,12 +274,12 @@
 	}
 	
 	for (; i < n_fields; i++) {
-		char *n = self->ob_type->tp_members[i-n_unnamed_fields].name;
+		char *n = Py_Type(self)->tp_members[i-n_unnamed_fields].name;
 		PyDict_SetItemString(dict, n,
 				     self->ob_item[i]);
 	}
 
-	result = Py_BuildValue("(O(OO))", self->ob_type, tup, dict);
+	result = Py_BuildValue("(O(OO))", Py_Type(self), tup, dict);
 
 	Py_DECREF(tup);
 	Py_DECREF(dict);
@@ -305,8 +305,7 @@
 };
 
 static PyTypeObject _struct_sequence_template = {
-	PyObject_HEAD_INIT(&PyType_Type)
-	0,					/* ob_size */
+	PyVarObject_HEAD_INIT(&PyType_Type, 0)
 	NULL,	                     		/* tp_name */
         0,		                        /* tp_basicsize */
 	0,	                      		/* tp_itemsize */
@@ -356,7 +355,7 @@
 #ifdef Py_TRACE_REFS
 	/* if the type object was chained, unchain it first
 	   before overwriting its storage */
-	if (type->_ob_next) {
+	if (type->ob_base.ob_base._ob_next) {
 		_Py_ForgetReference((PyObject*)type);
 	}
 #endif