From: Hiromichi Watari
Date: April 24 2011 8:34pm
Subject: Use of thread specific data with mysqld
List-Archive: http://lists.mysql.com/internals/38308
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Hi,
I'm trying to use thread specific data with mysqld but ran into a problem with my_errno generating Segmentation fault at the following line.
I know that my_errno is also thread specific data but not familiar with its implementation.
I'm using pthread_key_create(), pthread_setspecific() and pthread_getspecific() for my own thread specific data, is there something I should be aware of ?
Thanks,
Hiromichi

p.s. I ran into this problem only if I try to use my own thread specific data, of course.

--------------------------------------------------------------------------------------------------
 
File my_register_filename(....)
.
.
.

my_errno= errno;   ----> generates segmentation fault
.
.
.



Program received signal SIGSEGV, Segmentation fault.
0x084b5975 in my_register_filename (fd=-1, FileName=0xb75b52af "./mysql/db.opt", type_of_file=FILE_BY_OPEN, error_message_number=29, MyFlags=0) at /home/hwatari/mysql-server-4/mysql-5.5-modified/mysys/my_open.c:157