智能化下的产物,无人棋牌室
MySQL 5.5.41 发布,此版本更新内容如下:
编译改进
- 移除了旧版本 Mac OS X 和 XCode 版本的 CMake 工作区 (Bug #18510941)
- Previously, the
MYSQL_MAINTAINER_MODE
CMake option was turned on by default for debug builds and off for release builds, andMYSQL_MAINTAINER_MODE
caused-Werror
to be enabled when building with GCC. (Bug #18313717) - 修改了构建支持,为 Clang 生成跟 gcc 一样的警告 (Bug #17959689)
- CMake configuration for the
Clang
compiler sets more appropriate flags for building on Linux. Specifically,-g -fno-omit-frame-pointer -fno-strict-aliasing
is now added. (Bug #17633291)
新功能和功能增强
- 新
-DWITH_UBSAN=ON
CMake 选项允许 Undefined Behavior Sanitizer (Bug #19587393)
Bugs 修复
- InnoDB: An
ALTER TABLE
operation raised an assertion. (Bug #19908343)References: This bug is a regression of Bug #18806829.
- InnoDB: In debug builds, setting the
innodb_limit_optimistic_insert_debug
debug configuration option to 1 caused an infinite B-tree page split. (Bug #19904003, Bug #74605) - InnoDB: The
dict_set_corrupted()
function attempted to update the clustered index of theSYS_INDEXES
data dictionary table incorrectly. (Bug #19584379) - InnoDB: A procedure, called from a function to perform an operation on a temporary table, caused the server to halt. (Bug #19306524)
- InnoDB: A
CREATE TABLE
operation that failed withinnodb_strict_mode=ON
would succeed without printing a warning withinnodb_strict_mode=OFF
. (Bug #17852083) - Replication: When using a MySQL version that had been compiled with the
WITH_DEBUG
option enabled, usingexpire_logs_days
to purge binary logs caused a restart to crash the server. This problem arose after the fix for Bug #17283409. The fix ensures thatcurrent_thd
is checked before callingDEBUG_SYNC()
. (Bug #19553099) - Replication: A kernel mutex contention was being caused because mysqlbinlog was calling localtime() for every event read, which in turn called stat(/etc/localtime). (Bug #72701, Bug #18808072)
- Replication: The global scope for the
sql_log_bin
system variable has been deprecated, and this variable can now be set with session scope only. (Bug #67433, Bug #15868071) InnoDB
permitted a foreign key to be created which referenced a parent table for which the user did not have sufficient privileges. (Bug #18790730)- On Windows, the replace utility did not work. (Bug #16581605)
- On CentOS 6, specifying a relative path name for the
--socket
option caused MySQL startup script failure. (Bug #74111, Bug #19775856) - The
IS_FREE_LOCK()
andIS_USED_LOCK()
function implementations contained a race condition due to which they could access freed memory when a user lock was concurrently checked and freed. (Bug #73123, Bug #19070633) - mysql_setpermission failed to properly quote user names in SQL statements that it generated. (Bug #66317, Bug #14486004)
同时还发布了 MySQL 5.6.22 版本,更新内容请看发行说明。