Bug#33031 app linked to libmysql.lib crash if run as service in vista under
localsystem
There are some problems using DllMain hook functions on Windows that
automatically do global and per-thread initialization for libmysqld.dll
1)per-thread initialization(DLL_THREAD_ATTACH)
MySQL internally counts number of active threads that and causes a delay in in
my_end() if not all threads are exited. But,there are threads that can be
started either by Windows internally (often in TCP/IP scenarios) or by user
himself - those threads are not necessarily using libmysql.dll functionality,
but nonetheless the contribute to the count of open threads.
2)process-initialization (DLL_PROCESS_ATTACH)
my_init() calls WSAStartup that itself loads DLLs and can lead to a deadlock in
Windows loader.
Fix is to remove dll initialization code from libmysql.dll in general case. I
still leave an environment variable LIBMYSQL_DLLINIT, which if set to any value
will cause the old behavior (DLL init hooks will be called). This env.variable
exists only to prevent breakage of existing Windows-only applications that
don't do mysql_thread_init() and work ok today. Use of LIBMYSQL_DLLINIT is
discouraged and it will be removed in 6.0
Add pack_bits to pack_reclength for dynamic rows. This solves buffer a possible buffer overflow on update.
(This will probably solve bug #563)
Fix test for available file descriptors in mysqltest
Fixed core dump bug in replication tests when running without transactional table support
