The following LWP interfaces might not be supported in a future release:
_lwp_create(2)
_lwp_detach(2)
_lwp_exit(2)
_lwp_getprivate(2)
_lwp_makecontext(2)
_lwp_setprivate(2)
_lwp_wait(2)
These interfaces are not part of a common model with multithreading enabled by default. The interfaces have worked as expected only when used in applications that are not linked with libthread.