pthread_cond_wait failed

Hello all

I'm using pcap and c_r libraries under FreeBSD 5.2.1-p9.
I have faced a problem, when one thread call pthread_cond_wait function,
i get 'Segmentation fault (core dumped)' message.

Here is the dump:
GNU gdb 5.2.1 (FreeBSD)
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This GDB was configured as "i386-unknown-freebsd"...
(gdb) core test.core
Core was generated by `test'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libc.so.5...done.
Loaded symbols for /lib/libc.so.5
Reading symbols from /usr/lib/libc_r.so.5...done.
Loaded symbols for /usr/lib/libc_r.so.5
Reading symbols from /usr/lib/libpcap.so.2...done.
Loaded symbols for /usr/lib/libpcap.so.2
Reading symbols from /usr/libexec/ld-elf.so.1...done.
Loaded symbols for /usr/libexec/ld-elf.so.1
#0  0x28159ef9 in _atomic_lock () from /usr/lib/libc_r.so.5
(gdb) bt
#0  0x28159ef9 in _atomic_lock () from /usr/lib/libc_r.so.5
#1  0x28159da9 in _spinlock () from /usr/lib/libc_r.so.5
#2  0x2815fbd2 in _mutex_cv_lock () from /usr/lib/libc_r.so.5
#3  0x2815fa79 in _mutex_cv_unlock () from /usr/lib/libc_r.so.5
#4  0x2816488f in _pthread_cond_wait () from /usr/lib/libc_r.so.5
#5  0x281649ee in pthread_cond_wait () from /usr/lib/libc_r.so.5
#6  0x280bcf35 in pthread_cond_wait () from /lib/libc.so.5
#7  0x08049486 in printThread (pv=0x0) at test.c:67
#8  0x2815842e in _thread_start () from /usr/lib/libc_r.so.5

regards,
Nik