_thr_attr_setstacksize
__weak_reference(_thr_attr_setstacksize, pthread_attr_setstacksize);
__weak_reference(_thr_attr_setstacksize, _pthread_attr_setstacksize);
[PJT_ATTR_SETSTACKSIZE] = {DUAL_ENTRY(_thr_attr_setstacksize)},
int _thr_attr_setstacksize(pthread_attr_t *, size_t);