pthread_rwlock_init
int pthread_rwlock_init(pthread_rwlock_t * __restrict,
WR(stub_zero, pthread_rwlock_init);
__strong_reference(_pthread_rwlock_init, pthread_rwlock_init);
#define _PROP_RWLOCK_INIT(x) pthread_rwlock_init(&(x), NULL)
pthread_rwlock_init(&retval->rwlock, NULL);