From bb9fa21cfe7a8343698ce5e26e845b4e0c877d6a Mon Sep 17 00:00:00 2001
From: Fred Drake <fdrake@acm.org>
Date: Fri, 5 Oct 2001 21:50:08 +0000
Subject: weakref.ReferenceError becomes a built-in exception now that weak ref
 objects are moving into the core; with these changes, it will be possible for
 the exception to be raised without the weakref module ever being imported.

---
 Include/pyerrors.h  | 1 +
 Python/exceptions.c | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index d7b7639..c3960b7 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -48,6 +48,7 @@ extern DL_IMPORT(PyObject *) PyExc_NotImplementedError;
 extern DL_IMPORT(PyObject *) PyExc_SyntaxError;
 extern DL_IMPORT(PyObject *) PyExc_IndentationError;
 extern DL_IMPORT(PyObject *) PyExc_TabError;
+extern DL_IMPORT(PyObject *) PyExc_ReferenceError;
 extern DL_IMPORT(PyObject *) PyExc_SystemError;
 extern DL_IMPORT(PyObject *) PyExc_SystemExit;
 extern DL_IMPORT(PyObject *) PyExc_TypeError;
diff --git a/Python/exceptions.c b/Python/exceptions.c
index ef9d01c..4d17529 100644
--- a/Python/exceptions.c
+++ b/Python/exceptions.c
@@ -97,6 +97,7 @@ Exception\n\
  |    |    |\n\
  |    |    +-- UnicodeError\n\
  |    |\n\
+ |    +-- ReferenceError\n\
  |    +-- SystemError\n\
  |    +-- MemoryError\n\
  |\n\
@@ -889,6 +890,9 @@ Please report this to the Python maintainer, along with the traceback,\n\
 the Python version, and the hardware/OS platform and version.";
 
 static char
+ReferenceError__doc__[] = "Weak ref proxy used after referent went away.";
+
+static char
 MemoryError__doc__[] = "Out of memory.";
 
 static char
@@ -956,6 +960,7 @@ PyObject *PyExc_NotImplementedError;
 PyObject *PyExc_SyntaxError;
 PyObject *PyExc_IndentationError;
 PyObject *PyExc_TabError;
+PyObject *PyExc_ReferenceError;
 PyObject *PyExc_SystemError;
 PyObject *PyExc_SystemExit;
 PyObject *PyExc_UnboundLocalError;
@@ -1044,6 +1049,7 @@ static struct {
   FloatingPointError__doc__},
  {"ValueError",   &PyExc_ValueError,  0, ValueError__doc__},
  {"UnicodeError", &PyExc_UnicodeError, &PyExc_ValueError, UnicodeError__doc__},
+ {"ReferenceError",  &PyExc_ReferenceError, 0, ReferenceError__doc__},
  {"SystemError",  &PyExc_SystemError, 0, SystemError__doc__},
  {"MemoryError",  &PyExc_MemoryError, 0, MemoryError__doc__},
  /* Warning categories */
-- 
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