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  1. MariaDB Server
  2. MDEV-24840

Crash caused by query with IN subquery containing union of two table value costructors

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      Description

      The following test case causes a crash of the server:

      create table t1 (a int) engine=myisam;
      insert into t1 values (3), (7), (1);
      select a from t1 where a in (values (7) union values (8));
      

      "mysqld" received signal SIGSEGV, Segmentation fault.
      0x0000555555d7a212 in st_select_lex_unit::optimize (this=0x7fff90013f80) at /home/igor/maria-git/10.3-mdev-22786/sql/sql_union.cc:1430:
       
      1428         sl->join->select_options=
      1429           (select_limit_cnt == HA_POS_ERROR || sl->braces) ?
      1430           sl->options & ~OPTION_FOUND_ROWS : sl->options |
      

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            Assignee:
            igor Igor Babaev
            Reporter:
            igor Igor Babaev
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