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/Modules/_csv.c b/Modules/_csv.c
index e3dca2c..246cc6c 100644
--- a/Modules/_csv.c
+++ b/Modules/_csv.c
@@ -125,7 +125,7 @@
 
 static PyTypeObject Reader_Type;
 
-#define ReaderObject_Check(v)   ((v)->ob_type == &Reader_Type)
+#define ReaderObject_Check(v)   (Py_Type(v) == &Reader_Type)
 
 typedef struct {
         PyObject_HEAD
@@ -310,7 +310,7 @@
 Dialect_dealloc(DialectObj *self)
 {
         Py_XDECREF(self->lineterminator);
-        self->ob_type->tp_free((PyObject *)self);
+        Py_Type(self)->tp_free((PyObject *)self);
 }
 
 static char *dialect_kws[] = {
@@ -460,8 +460,7 @@
 "The Dialect type records CSV parsing and generation options.\n");
 
 static PyTypeObject Dialect_Type = {
-	PyObject_HEAD_INIT(NULL)
-	0,                                      /* ob_size */
+	PyVarObject_HEAD_INIT(NULL, 0)
 	"_csv.Dialect",                         /* tp_name */
 	sizeof(DialectObj),                     /* tp_basicsize */
 	0,                                      /* tp_itemsize */
@@ -869,8 +868,7 @@
 
 
 static PyTypeObject Reader_Type = {
-	PyObject_HEAD_INIT(NULL)
-	0,                                      /*ob_size*/
+	PyVarObject_HEAD_INIT(NULL, 0)
 	"_csv.reader",                          /*tp_name*/
 	sizeof(ReaderObj),                      /*tp_basicsize*/
 	0,                                      /*tp_itemsize*/
@@ -1280,8 +1278,7 @@
 );
 
 static PyTypeObject Writer_Type = {
-	PyObject_HEAD_INIT(NULL)
-	0,                                      /*ob_size*/
+	PyVarObject_HEAD_INIT(NULL, 0)
 	"_csv.writer",                          /*tp_name*/
 	sizeof(WriterObj),                      /*tp_basicsize*/
 	0,                                      /*tp_itemsize*/