From: Serhiy Storchaka <storchaka@gmail.com>
Date: Fri, 30 Jan 2015 23:15:29 +0000 (+0200)
Subject: Issue #23055: Fixed read-past-the-end error in PyUnicode_FromFormatV.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=227526dc5c47151d3829823f39ba122e7a348ed1;p=python

Issue #23055: Fixed read-past-the-end error in PyUnicode_FromFormatV.
---

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 1e3b812528..91e75244bf 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -738,6 +738,8 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
              f++;
              while (*f && *f != '%' && !isalpha((unsigned)*f))
                  f++;
+             if (!*f)
+                 break;
              if (*f == 's' || *f=='S' || *f=='R')
                  ++callcount;
          }