Clear class_map in constructor so that when it later detects an error

and the destructor is called early, it doesn't DECREF garbage.

diff --git a/Modules/cPickle.c b/Modules/cPickle.c
index 6244f8b33355274cf344562b5c85344f2ff29458..db72bf990eafed941be346eff1a3d42b0ed732d8 100644 (file)
--- a/Modules/cPickle.c
+++ b/Modules/cPickle.c
@@ -3906,7 +3906,8 @@ newUnpicklerobject(PyObject *f) {
     self->marks_size = 0;
     self->buf_size = 0;
     self->read = NULL;
-    self->readline = NULL;    
+    self->readline = NULL;
+    self->class_map = NULL;
 
     UNLESS(self->memo = PyDict_New()) {
        Py_XDECREF((PyObject *)self);