From 41b3ed788d6b622bc8f3f8a992163e593891be9c Mon Sep 17 00:00:00 2001
From: Robert Reif <reif@earthlink.net>
Date: Tue, 8 Oct 2013 05:33:37 +0200
Subject: [PATCH] CheckIO: fix crash

---
 lib/checkio.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/checkio.cpp b/lib/checkio.cpp
index 484498083..a9333d857 100644
--- a/lib/checkio.cpp
+++ b/lib/checkio.cpp
@@ -585,7 +585,7 @@ void CheckIO::checkWrongPrintfScanfArguments()
                         }
                         ++i;
                     }
-                    if (*i == '[') {
+                    if (i != formatString.end() && *i == '[') {
                         while (i != formatString.end()) {
                             if (*i == ']') {
                                 if (!skip) {