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  1. MariaDB Server
  2. MDEV-4915

Valgrind warnings (Conditional jump or move depends on uninitialised value) in my_strtoll10

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: 10.0.4, 5.5.32, 5.3.12
    • Fix Version/s: 5.5.33, 10.0.6, 5.3.13
    • Component/s: None
    • Labels:
      None

      Description

      I'm not sure if it's related to MDEV-4895, so I'll file it separately just in case.

      CREATE TABLE t1 (d DATE NOT NULL) ENGINE=MyISAM;
      INSERT INTO t1 VALUES ('2008-03-24'),('2004-04-21');
      SELECT * FROM t1 WHERE COALESCE( d, '2009-12-11' ) IS NULL;

      ==5889== Thread 4:
      ==5889== Conditional jump or move depends on uninitialised value(s)
      ==5889==    at 0xC29B25: my_strtoll10 (my_strtoll10.c:112)
      ==5889==    by 0xC04995: my_strtoll10_8bit (ctype-simple.c:1386)
      ==5889==    by 0x5B20C8: Item_func_numhybrid::val_int() (item_func.cc:916)
      ==5889==    by 0x59888E: Item::update_null_value() (item.h:955)
      ==5889==    by 0x5C523A: Item_func_numhybrid::is_null() (item_func.h:398)
      ==5889==    by 0x5D81C6: Item_func_isnull::val_int() (item_cmpfunc.cc:4624)
      ==5889==    by 0x5AF3E9: eval_const_cond(Item*) (item_func.cc:63)
      ==5889==    by 0x72DFF6: remove_eq_conds(THD*, Item*, Item::cond_result*) (sql_select.cc:13568)
      ==5889==    by 0x72D080: optimize_cond(JOIN*, Item*, List<TABLE_LIST>*, bool, Item::cond_result*, COND_EQUAL**) (sql_select.cc:13145)
      ==5889==    by 0x70D6F9: JOIN::optimize() (sql_select.cc:1019)
      ==5889==    by 0x714BAA: mysql_select(THD*, Item***, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) (sql_select.cc:2993)
      ==5889==    by 0x70B4CE: handle_select(THD*, st_lex*, select_result*, unsigned long) (sql_select.cc:288)
      ==5889==    by 0x696932: execute_sqlcom_select(THD*, TABLE_LIST*) (sql_parse.cc:5172)
      ==5889==    by 0x68D6F1: mysql_execute_command(THD*) (sql_parse.cc:2305)
      ==5889==    by 0x6993AC: mysql_parse(THD*, char*, unsigned int, char const**) (sql_parse.cc:6173)
      ==5889==    by 0x68AE95: dispatch_command(enum_server_command, THD*, char*, unsigned int) (sql_parse.cc:1243)

      bzr version-info

      revision-id: igor@askmonty.org-20130817050147-k5dvrilf0u0vz8cr
      revno: 3677
      branch-nick: 5.3

      Built with BUILD/compile-pentium-valgrind-max-no-ndb

      Also reproducible on 5.5, 10.0.

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            Assignee:
            bar Alexander Barkov
            Reporter:
            elenst Elena Stepanova
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              Dates

              Created:
              Updated:
              Resolved:

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