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-rw-r--r--sql/item_sum.cc18
1 files changed, 15 insertions, 3 deletions
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 21f14ae8435..1c5682417a5 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -1,5 +1,5 @@
-/* Copyright (c) 2000, 2013, Oracle and/or its affiliates.
- Copyright (c) 2008, 2014, SkySQL Ab.
+/* Copyright (c) 2000, 2015, Oracle and/or its affiliates.
+ Copyright (c) 2008, 2015, MariaDB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -3311,7 +3311,19 @@ void Item_func_group_concat::cleanup()
}
DBUG_ASSERT(tree == 0);
}
-
+ /*
+ As the ORDER structures pointed to by the elements of the
+ 'order' array may be modified in find_order_in_list() called
+ from Item_func_group_concat::setup() to point to runtime
+ created objects, we need to reset them back to the original
+ arguments of the function.
+ */
+ ORDER **order_ptr= order;
+ for (uint i= 0; i < arg_count_order; i++)
+ {
+ (*order_ptr)->item= &args[arg_count_field + i];
+ order_ptr++;
+ }
DBUG_VOID_RETURN;
}