From af9ad0f8ae6bb968838e86830f6bd50f0e234d97 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Sun, 25 Nov 2018 03:15:43 +0300
Subject: [PATCH] Fixed bad code [#CLICKHOUSE-2]

---
 dbms/src/Functions/FunctionsURL.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/dbms/src/Functions/FunctionsURL.h b/dbms/src/Functions/FunctionsURL.h
index cfd5f11406d..639f4d850e3 100644
--- a/dbms/src/Functions/FunctionsURL.h
+++ b/dbms/src/Functions/FunctionsURL.h
@@ -555,7 +555,7 @@ struct CutURLParameterImpl
             do
             {
                 const char * query_string_begin = find_first_symbols<'?', '#'>(url_begin, url_end);
-                if (query_string_begin == url_end)
+                if (query_string_begin + 1 >= url_end)
                     break;
 
                 const char * pos = strstr(query_string_begin + 1, param_str);
@@ -642,7 +642,7 @@ public:
         {
             first = false;
             pos = find_first_symbols<'?', '#'>(pos, end);
-            if (pos == end)
+            if (pos + 1 >= end)
                 return false;
             ++pos;
         }
@@ -731,7 +731,7 @@ public:
         else
             pos = find_first_symbols<'&', '#'>(pos, end);
 
-        if (pos == end)
+        if (pos + 1 >= end)
             return false;
         ++pos;