Merge magare.gmz:/home/kgeorge/mysql/work/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/work/merge-5.1-opt

1 files changed, 6 insertions, 0 deletions

diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index c67687b2bde..10280168f07 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -2161,12 +2161,18 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
   keys_to_use.intersect(head->keys_in_use_for_query);
   if (!keys_to_use.is_clear_all())
   {
+#ifndef EMBEDDED_LIBRARY                      // Avoid compiler warning
+    char buff[STACK_BUFF_ALLOC];
+#endif
     MEM_ROOT alloc;
     SEL_TREE *tree= NULL;
     KEY_PART *key_parts;
     KEY *key_info;
     PARAM param;
 
+    if (check_stack_overrun(thd, 2*STACK_MIN_SIZE, buff))
+      DBUG_RETURN(0);                           // Fatal error flag is set
+
     /* set up parameter that is passed to all functions */
     param.thd= thd;
     param.baseflag= head->file->ha_table_flags();