pthread_mutex_lock crashed

Hello!

I've tested MICO port (CORBA implementation) both on -stable and 
-current. I use lang/gcc33 port for -stable.

On -stable all goes right, but on -current one example crashed in 
pthread_mutex_lock().

Here is gdb back tracing:
#0  0x280830c9 in _atomic_lock () from /usr/lib/libc_r.so.5
#1  0x28083094 in _spinlock_debug () from /usr/lib/libc_r.so.5
#2  0x28088962 in _pthread_mutex_trylock () from /usr/lib/libc_r.so.5
#3  0x28088d12 in pthread_mutex_lock () from /usr/lib/libc_r.so.5
#4  0x282d5fcb in CORBA::ServerlessObject::_deref() ()
    from /usr/local/lib/libmico2.3.11.so
#5  0x282ceac6 in 
ObjVar<CORBA::ContextList>::release(CORBA::ContextList*) ()
    from /usr/local/lib/libmico2.3.11.so

... etc.

The port has been built with -lc_r on -current.

Can you comment it?

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Sem.