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  1. MariaDB Server
  2. MDEV-39377

MariaDB debug build assertion `args[0] == args[2] || thd->stmt_arena->is_stmt_execute()' failed in Item_func_nullif::fix_length_and_dec

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Duplicate
    • 12.2.2
    • N/A
    • Optimizer
    • None
    • ubuntu 22.04
    • Not for Release Notes

    Description

      MariaDB debug build (12.2.2-MariaDB-asan-debug) crashes with an assertion failure when using NULLIF with LEAST function containing TIME_FORMAT and DATABASE. The assertion `args[0] == args[2] || thd->stmt_arena->is_stmt_execute()` fails in `Item_func_nullif::fix_length_and_dec()`.

      DROP DATABASE IF EXISTS sqlcraft;
      CREATE DATABASE sqlcraft;
      USE sqlcraft;
      CREATE TABLE IF NOT EXISTS t0(c0 CHAR(100)  PRIMARY KEY) engine=Aria;
       
       
      SELECT 1 AS c0 FROM t0 AS tom0 GROUP BY tom0.c0 
      HAVING NULLIF( 'A' , LEAST( NULLIF( 'A' , 'A' ) , TIME_FORMAT( c0 , '%s' ) , DATABASE( ) ) );
      

      crash logs:
       
      mariadbd: /app/dbms/mariadb-12.2.2/sql/item_cmpfunc.cc:2756: virtual bool Item_func_nullif::fix_length_and_dec(THD*): Assertion `args[0] == args[2] || thd->stmt_arena->is_stmt_execute()' failed.
      260420  9:54:23 [ERROR] /usr/local/mariadb-asan/bin/mariadbd got signal 6 ;
      Sorry, we probably made a mistake, and this is a bug.
       
      Your assistance in bug reporting will enable us to fix this for the next release.
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs about how to report
      a bug on https://jira.mariadb.org/.
       
      Server version: 12.2.2-MariaDB-asan-debug source revision: d26a6f44c1f2119377e79a9540886c6d8c01472f
       
      Query (0x52d00024e438): SELECT 1 AS c0 
      FROM t0 AS tom0 
      GROUP BY tom0.c0 
      HAVING NULLIF( 'A' , LEAST( NULLIF( 'A' , 'A' ) , TIME_FORMAT( c0 , '%s' ) , DATABASE( ) ) )
      Status: NOT_KILLED
      

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              Unassigned Unassigned
              ammmkilo ammmkilo
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                Updated:
                Resolved:

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