MySQL 5.5.41 發布下載，此版本更新內容如下：

編譯改進

移除了舊版本 Mac OS X 和 XCode 版本的CMake 工作區 (Bug #18510941)

Previously, the? MYSQL_MAINTAINER_MODE CMake option was turned on by default for debug builds and off for release builds, and MYSQL_MAINTAINER_MODE caused? -Werror to be enabled when building with GCC.? (Bug #18313717)

修改了構建支持，為 Clang 生成跟 gcc 一樣的警告 (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)

新功能和功能增強

新 -DWITH_UBSAN=ON CMake 選項允許 Undefined Behavior Sanitizer (Bug #19587393)

Bugs 修復

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 the ? ? ? ?SYS_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 with innodb_strict_mode=ON would succeed without printing a warning with innodb_strict_mode=OFF.? (Bug #17852083)

Replication:? When using a MySQL version that had been compiled with the? WITH_DEBUG option enabled, using expire_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 that current_thd is checked before calling ? ? ? ?DEBUG_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() and? IS_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)

同時還發布了 MySQL 5.6.22 版本，更新內容請看發行說明。

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Ubuntu 14.04 LTS 安裝 LNMP Nginx\PHP5 (PHP-FPM)\MySQL http://www.linuxidc.com/Linux/2014-05/102351.htm

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