Missing routines for POSIX: 200112 * sem_timedwait: Disabled in libthread for some reason [optional] * we only support the PTHREAD_PROCESS_PRIVATE as process-shared attribute for pthread_barrierattr*() [e.g. in pthread_barrierattr_setpshared()] 200809 * sigqueue : optional in 200112, required in 200809. We don't support sigqueue or any posix signal queuing. * mq_notify doesn't support SIGEV_THREAD This would be fairly straightforward to support * aio_notify doesn't support SIGEV_SIGNAL This is blocked by lack of proper SIGINFO * POSIX aio is implemented by wrapping synchronous routines * POSIX aio routines do not perform full set of required tests. * open_memstream seek behaviour is not posix-compliant. * O_CLOEXEC support