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MDEV-14696 Server crashes in in prep_alter_part_table on 2nd execution of PS.

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The thd->lex->part_info should be kept intact during PS
        execution. Or the second execution gets that modified part_info.
        Let's modify ths->work_part_info instead.
This commit is contained in:
Alexey Botchkov
2018-01-30 11:28:21 +04:00
parent c4a908cb56
commit 6b4a4a85a7
4 changed files with 32 additions and 2 deletions
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7
sql/sql_partition.cc
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@ -4713,7 +4713,12 @@ uint prep_alter_part_table(THD *thd, TABLE *table, Alter_info *alter_info,
DBUG_RETURN(TRUE);
}
thd->work_part_info= thd->lex->part_info;
/*
One of these is done in handle_if_exists_option():
thd->work_part_info= thd->lex->part_info;
or
thd->work_part_info= NULL;
*/
if (thd->work_part_info &&
!(thd->work_part_info= thd->work_part_info->get_clone()))