Is mysql_real_connect thread safe?

[Dhammika Pathirana]

Hi,

I'm working on a multi-threaded daemon written in C/C++ for FreeBSD.
This daemon uses libmysqlclient_r.so.15 to query a mysql db. Both
libmysqlclient_r and the daemon are compiled with -lpthread and all
threads are initialized with mysql_init.
If I startup this daemon process at system bootup (through rc.d) then
I get the following core, but it seems to work fine if I start it
manually (after system bootup). Would really appreciate any help on
this.

#0  0x2846926f in pthread_testcancel () from /usr/lib/libpthread.so.1
(gdb) bt
#0  0x2846926f in pthread_testcancel () from /usr/lib/libpthread.so.1
#1  0x28461856 in pthread_mutexattr_init () from /usr/lib/libpthread.so.1
#2  0x00000000 in ?? ()
(gdb) info threads
* 5 LWP 100248  0x2846926f in pthread_testcancel () from
/usr/lib/libpthread.so.1
 4 Thread 4 (runnable)  0x287a269b in my_stat () from
/usr/local/aspera/lib/libmysqlclient_r.so.15
  3 Thread 3 (LWP 100252)  0x2846924f in pthread_testcancel () from
/usr/lib/libpthread.so.1
 2 Thread 2 (sleeping)  0x2846115b in pthread_mutexattr_init () from
/usr/lib/libpthread.so.1
 1 Thread 1 (runnable)  0x285ac907 in read () from /lib/libc.so.5

thanks in advance

Dhammika