Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt

into  moonbone.local:/mnt/gentoo64/work/clean-5.0-opt-mysql


mysql-test/t/update.test:
  Auto merged
mysql-test/r/update.result:
  Manually merged
sql/sql_base.cc:
  Manually merged
sql/sql_select.cc:
  Manually merged

mysql-test/r/update.result

@@ -377,6 +377,10 @@ create table t1(f1 int, `*f2` int);
 insert into t1 values (1,1);
 update t1 set `*f2`=1;
 drop table t1;
+create table t1(f1 int);
+update t1 set f2=1 order by f2;
+ERROR 42S22: Unknown column 'f2' in 'order clause'
+drop table t1;
 CREATE TABLE t1 (
 request_id int unsigned NOT NULL auto_increment,
 user_id varchar(12) default NULL,

mysql-test/t/update.test

@@ -306,6 +306,14 @@ create table t1(f1 int, `*f2` int);
 insert into t1 values (1,1);
 update t1 set `*f2`=1;
 drop table t1;
+
+#
+# Bug#25126: Wrongly resolved field leads to a crash
+#
+create table t1(f1 int);
+--error 1054
+update t1 set f2=1 order by f2;
+drop table t1;
 # End of 4.1 tests
 
 #

sql/sql_base.cc

@@ -4420,12 +4420,15 @@ bool setup_fields(THD *thd, Item **ref_pointer_array,
   bool save_set_query_id= thd->set_query_id;
   nesting_map save_allow_sum_func= thd->lex->allow_sum_func;
   List_iterator<Item> it(fields);
+  bool save_is_item_list_lookup;
   DBUG_ENTER("setup_fields");
 
   thd->set_query_id=set_query_id;
   if (allow_sum_func)
     thd->lex->allow_sum_func|= 1 << thd->lex->current_select->nest_level;
   thd->where= THD::DEFAULT_WHERE;
+  save_is_item_list_lookup= thd->lex->current_select->is_item_list_lookup;
+  thd->lex->current_select->is_item_list_lookup= 0;
 
   /*
     To prevent fail on forward lookup we fill it with zerows,
@@ -4448,6 +4451,7 @@ bool setup_fields(THD *thd, Item **ref_pointer_array,
     if (!item->fixed && item->fix_fields(thd, it.ref()) ||
 	(item= *(it.ref()))->check_cols(1))
     {
+      thd->lex->current_select->is_item_list_lookup= save_is_item_list_lookup;
       thd->lex->allow_sum_func= save_allow_sum_func;
       thd->set_query_id= save_set_query_id;
       DBUG_RETURN(TRUE); /* purecov: inspected */
@@ -4460,6 +4464,7 @@ bool setup_fields(THD *thd, Item **ref_pointer_array,
     thd->used_tables|= item->used_tables();
     thd->lex->current_select->cur_pos_in_select_list++;
   }
+  thd->lex->current_select->is_item_list_lookup= save_is_item_list_lookup;
   thd->lex->current_select->cur_pos_in_select_list= UNDEF_POS;
 
   thd->lex->allow_sum_func= save_allow_sum_func;
@@ -4956,6 +4961,8 @@ int setup_conds(THD *thd, TABLE_LIST *tables, TABLE_LIST *leaves,
   */
   bool it_is_update= (select_lex == &thd->lex->select_lex) &&
     thd->lex->which_check_option_applicable();
+  bool save_is_item_list_lookup= select_lex->is_item_list_lookup;
+  select_lex->is_item_list_lookup= 0;
   DBUG_ENTER("setup_conds");
 
   if (select_lex->conds_processed_with_permanent_arena ||
@@ -5030,9 +5037,11 @@ int setup_conds(THD *thd, TABLE_LIST *tables, TABLE_LIST *leaves,
     select_lex->where= *conds;
     select_lex->conds_processed_with_permanent_arena= 1;
   }
+  thd->lex->current_select->is_item_list_lookup= save_is_item_list_lookup;
   DBUG_RETURN(test(thd->net.report_error));
 
 err_no_arena:
+  select_lex->is_item_list_lookup= save_is_item_list_lookup;
   DBUG_RETURN(1);
 }
 

sql/sql_select.cc

@@ -396,6 +396,7 @@ JOIN::prepare(Item ***rref_pointer_array,
   join_list= &select_lex->top_join_list;
   union_part= (unit_arg->first_select()->next_select() != 0);
 
+  thd->lex->current_select->is_item_list_lookup= 1;
   /*
     If we have already executed SELECT, then it have not sense to prevent
     its table from update (see unique_table())
@@ -13265,16 +13266,11 @@ find_order_in_list(THD *thd, Item **ref_pointer_array, TABLE_LIST *tables,
     We check order_item->fixed because Item_func_group_concat can put
     arguments for which fix_fields already was called.
   */
-  thd->lex->current_select->is_item_list_lookup= 1;
   if (!order_item->fixed &&
       (order_item->fix_fields(thd, order->item) ||
        (order_item= *order->item)->check_cols(1) ||
        thd->is_fatal_error))
-  {
-    thd->lex->current_select->is_item_list_lookup= 0;
     return TRUE; /* Wrong field. */
-  }
-  thd->lex->current_select->is_item_list_lookup= 0;
 
   uint el= all_fields.elements;
   all_fields.push_front(order_item); /* Add new field to field list. */