From 3c4971c40eb97ac69a49ab53d04b22b9d80c0ef9 Mon Sep 17 00:00:00 2001
From: Alexandre Vassalotti <alexandre@peadrop.com>
Date: Fri, 16 May 2008 19:14:31 +0000
Subject: [PATCH] Added Python 3.0 warning to cPickle.

---
 Lib/test/test_py3kwarn.py | 2 +-
 Modules/cPickle.c         | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_py3kwarn.py b/Lib/test/test_py3kwarn.py
index c6160dac97c..2c8f509e605 100644
--- a/Lib/test/test_py3kwarn.py
+++ b/Lib/test/test_py3kwarn.py
@@ -155,7 +155,7 @@ class TestStdlibRemovals(unittest.TestCase):
                            'sunos5' : ('sunaudiodev', 'SUNAUDIODEV'),
                           }
     optional_modules = ('bsddb185', 'Canvas', 'dl', 'linuxaudiodev', 'imageop',
-                        'sv')
+                        'sv', 'cPickle')
 
     def check_removal(self, module_name, optional=False):
         """Make sure the specified module, when imported, raises a
diff --git a/Modules/cPickle.c b/Modules/cPickle.c
index 1dd35be645d..06726eed9c5 100644
--- a/Modules/cPickle.c
+++ b/Modules/cPickle.c
@@ -5710,6 +5710,12 @@ initcPickle(void)
 	PyObject *format_version;
 	PyObject *compatible_formats;
 
+	/* XXX: Should mention that the pickle module will include the C
+	   XXX: optimized implementation automatically. */
+	if (PyErr_WarnPy3k("the cPickle module has been removed in "
+			   "Python 3.0", 2) < 0)
+		return;
+
 	Py_TYPE(&Picklertype) = &PyType_Type;
 	Py_TYPE(&Unpicklertype) = &PyType_Type;
 	Py_TYPE(&PdataType) = &PyType_Type;