Details
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Type:
Bug
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Status: Closed
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: 10.0.9
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Fix Version/s: 10.0.10
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Component/s: None
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Labels:None
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Environment:Windows
Description
--source include/have_innodb.inc
create temporary table tmp (i int) engine=innodb;
truncate table tmp;
mysqld.exe!handle_rtc_failure(int err_type, const char * file, int line, const char * module, const char * format, ...) Line 284 C mysqld.exe!failwithmessage(void * retaddr, int crttype, int errnum, const char * msg) + 0x223 bytes C++ mysqld.exe!_RTC_UninitUse(const char * varname) + 0xee bytes C++ mysqld.exe!Sql_cmd_truncate_table::handler_truncate(THD * thd, TABLE_LIST * table_ref, bool is_tmp_table) Line 228 + 0x13 bytes C++ mysqld.exe!Sql_cmd_truncate_table::truncate_table(THD * thd, TABLE_LIST * table_ref) Line 444 + 0x20 bytes C++ mysqld.exe!Sql_cmd_truncate_table::execute(THD * thd) Line 534 + 0x1a bytes C++ mysqld.exe!mysql_execute_command(THD * thd) Line 5109 + 0x2c bytes C++ mysqld.exe!mysql_parse(THD * thd, char * rawbuf, unsigned int length, Parser_state * parser_state) Line 6452 + 0xd bytes C++ mysqld.exe!dispatch_command(enum_server_command command, THD * thd, char * packet, unsigned int packet_length) Line 1311 C++ mysqld.exe!do_command(THD * thd) Line 1005 + 0x25 bytes C++ mysqld.exe!do_handle_one_connection(THD * thd_arg) Line 1379 + 0xa bytes C++ mysqld.exe!handle_one_connection(void * arg) Line 1294 C++ mysqld.exe!pfs_spawn_thread(void * arg) Line 1855 C++ mysqld.exe!pthread_start(void * p) Line 61 C mysqld.exe!_callthreadstartex() Line 314 + 0x17 bytes C mysqld.exe!_threadstartex(void * ptd) Line 297 C
revision-id: monty@mariadb.org-20140328194257-zr9f894fd4h9lqgy date: 2014-03-28 21:42:57 +0200 build-date: 2014-03-28 13:17:47 -0700 revno: 4134 branch-nick: 10.0
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Microsoft compiler adds runtime checks for uninitialized variables in debug version (of course, it also complains during compilation about possibly uninitialized variables 
)
Here, the crash is failed runtime check.
The code in Sql_cmd_truncate_table::handler_truncate goes like this:
uint flags; ... if (!is_tmp_table) { ... flags= MYSQL_OPEN_IGNORE_FLUSH; ... } if (open_and_lock_tables(thd, table_ref, FALSE, flags)) ..if is_tmp_table==true, then 'flags' will have garbage value which will be
passed to open_and_lock_tables.