From feb425a9f21f10068116c0c59670fc953e0c459e Mon Sep 17 00:00:00 2001
From: "bell@sanja.is.com.ua" <>
Date: Wed, 2 Jul 2003 14:45:35 +0300
Subject: [PATCH] fixed bug, which lead to crash mysqld by running 'mysql
 some_db_with_tables'

---
 sql/item.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sql/item.cc b/sql/item.cc
index 3ea537a19de..9b3e367ccff 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -50,7 +50,13 @@ Item::Item():
   next= thd->free_list;			// Put in free list
   thd->free_list= this;
   loop_id= 0;
-  if (thd->lex.current_select->parsing_place == SELECT_LEX_NODE::SELECT_LIST)
+  /*
+    Item constractor can be called during execution other tnec SQL_COM
+    command => we should check thd->lex.current_select on zero (thd->lex
+    can be uninitialized)
+  */
+  if (thd->lex.current_select &&
+      thd->lex.current_select->parsing_place == SELECT_LEX_NODE::SELECT_LIST)
     thd->lex.current_select->select_items++;
 }