Index: Objects/exceptions.c
===================================================================
--- Objects/exceptions.c	(Revision 51628)
+++ Objects/exceptions.c	(Arbeitskopie)
@@ -81,6 +81,7 @@
 static void
 BaseException_dealloc(PyBaseExceptionObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     BaseException_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }
@@ -456,6 +457,7 @@
 static void
 SystemExit_dealloc(PySystemExitObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     SystemExit_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }
@@ -562,6 +564,7 @@
 static void
 EnvironmentError_dealloc(PyEnvironmentErrorObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     EnvironmentError_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }
@@ -760,6 +763,7 @@
 static void
 WindowsError_dealloc(PyWindowsErrorObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     WindowsError_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }
@@ -1035,6 +1039,7 @@
 static void
 SyntaxError_dealloc(PySyntaxErrorObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     SyntaxError_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }
@@ -1551,6 +1556,7 @@
 static void
 UnicodeError_dealloc(PyUnicodeErrorObject *self)
 {
+    _PyObject_GC_UNTRACK(self);
     UnicodeError_clear(self);
     self->ob_type->tp_free((PyObject *)self);
 }