From 7083bb744a552ab2bf31500763ace783d12f6fb8 Mon Sep 17 00:00:00 2001
From: Jeremy Hylton <jeremy@alum.mit.edu>
Date: Tue, 17 Feb 2004 20:10:11 +0000
Subject: [PATCH] Oops.  Return -1 to distinguish error from empty dict.

This change probably isn't work a bug fix.  It's unlikely that anyone
was calling this method without passing it a real dict.
---
 Objects/dictobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 35a3e31672b..eb0222cdd56 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -1256,7 +1256,7 @@ PyDict_Size(PyObject *mp)
 {
 	if (mp == NULL || !PyDict_Check(mp)) {
 		PyErr_BadInternalCall();
-		return 0;
+		return -1;
 	}
 	return ((dictobject *)mp)->ma_used;
 }