From 88710c53124968c79f79256bb038441cfc4b3184 Mon Sep 17 00:00:00 2001
From: Madhura Jayaratne <madhura.cj@gmail.com>
Date: Thu, 27 Aug 2015 13:07:29 +1000
Subject: [PATCH] Fix #11434 Class 'SqlParser\Lexer' not found

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>
---
 libraries/Util.class.php | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/libraries/Util.class.php b/libraries/Util.class.php
index cd4b556bad..b23a78616d 100644
--- a/libraries/Util.class.php
+++ b/libraries/Util.class.php
@@ -625,23 +625,26 @@ class PMA_Util
         }
         $sql_query = trim($sql_query);
 
-        /**
-         * The lexer used for analysis.
-         * @var SqlParser\Lexer $lexer
-         */
-        $lexer = new SqlParser\Lexer($sql_query);
+        $errors = array();
+        if (! empty($sql_query)) {
+            /**
+             * The lexer used for analysis.
+             * @var SqlParser\Lexer $lexer
+             */
+            $lexer = new SqlParser\Lexer($sql_query);
 
-        /**
-         * The parser used for analysis.
-         * @var SqlParser\Parser $parser
-         */
-        $parser = new SqlParser\Parser($lexer->list);
+            /**
+             * The parser used for analysis.
+             * @var SqlParser\Parser $parser
+             */
+            $parser = new SqlParser\Parser($lexer->list);
 
-        /**
-         * The errors found by the lexer and the parser.
-         * @var array $errors
-         */
-        $errors = SqlParser\Utils\Error::get(array($lexer, $parser));
+            /**
+             * The errors found by the lexer and the parser.
+             * @var array $errors
+             */
+            $errors = SqlParser\Utils\Error::get(array($lexer, $parser));
+        }
 
         if (empty($sql_query)) {
             $formatted_sql = '';