From 98b2a42bc48a82718b36b9da094b1f6d24825967 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Wed, 18 Sep 2002 04:06:32 +0000
Subject: Fix SF bug 610610 (reported by Martijn Pieters, diagnosed by Neal
 Norwitz).

The switch in Exception__str__ didn't clear the error if
PySequence_Size() raised an exception.  Added a case -1 which clears
the error and falls through to the default case.

Definite backport candidate (this dates all the way to Python 2.0).
---
 Python/exceptions.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Python/exceptions.c b/Python/exceptions.c
index 3f07089..03affdc 100644
--- a/Python/exceptions.c
+++ b/Python/exceptions.c
@@ -288,6 +288,9 @@ Exception__str__(PyObject *self, PyObject *args)
 	    out = NULL;
 	break;
     }
+    case -1:
+        PyErr_Clear();
+        /* Fall through */
     default:
         out = PyObject_Str(args);
         break;
-- 
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