From 61696b0603abc365b821dae27acd9c594d824468 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Thu, 5 Jun 2014 01:32:58 +0200
Subject: [PATCH] Added guard on params with no length on callproc

---
 psycopg/cursor_type.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/psycopg/cursor_type.c b/psycopg/cursor_type.c
index 0ee70e69..ec315338 100644
--- a/psycopg/cursor_type.c
+++ b/psycopg/cursor_type.c
@@ -1042,9 +1042,8 @@ psyco_curs_callproc(cursorObject *self, PyObject *args)
     }
 
     if (parameters != Py_None) {
-        nparameters = PyObject_Length(parameters);
-        if (nparameters < 0) {
-            nparameters = 0;
+        if (-1 == (nparameters = PyObject_Length(parameters))) {
+            goto exit;
         }
     }