From aed198426a3b1186633295cd4a6160ab4423e069 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sat, 31 Jan 2015 01:15:48 +0200
Subject: Issue #23055: Fixed read-past-the-end error in PyUnicode_FromFormatV.

---
 Objects/unicodeobject.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 1d1d531..090cc1f 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -762,6 +762,8 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
              f++;
              while (*f && *f != '%' && !Py_ISALPHA((unsigned)*f))
                  f++;
+             if (!*f)
+                 break;
              if (*f == 's' || *f=='S' || *f=='R' || *f=='A' || *f=='V')
                  ++callcount;
          }
-- 
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