Sergey Vojtovich 1ad294e064 MDEV-7821 - Server crashes in Item_func_group_concat::fix_fields on 2nd ...

execution of PS

GROUP_CONCAT() with ORDER BY column position may crash server on PS reexecution.

The problem was that arguments array of GROUP_CONCAT() was adjusted to point to
temporary elements (resolved ORDER BY fields) during first execution.

This patch expands rev. 08763096cb to restore original arguments array as well.

2015-07-31 13:05:10 +04:00

26 KiB

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