Index: Modules/_sre.c
===================================================================
--- Modules/_sre.c	(révision 64939)
+++ Modules/_sre.c	(copie de travail)
@@ -2698,7 +2698,7 @@
     }
 
     if (PyErr_Occurred()) {
-        PyObject_DEL(self);
+        Py_DECREF(self);
         return NULL;
     }
 
@@ -3243,7 +3243,7 @@
 scanner_dealloc(ScannerObject* self)
 {
     state_fini(&self->state);
-    Py_DECREF(self->pattern);
+    Py_XDECREF(self->pattern);
     PyObject_DEL(self);
 }
 
@@ -3365,10 +3365,11 @@
     self = PyObject_NEW(ScannerObject, &Scanner_Type);
     if (!self)
         return NULL;
+    self->pattern = NULL;
 
     string = state_init(&self->state, pattern, string, start, end);
     if (!string) {
-        PyObject_DEL(self);
+        Py_DECREF(self);
         return NULL;
     }