#include int __pthread_key_create(tss_t *, void (*)(void *)); int tss_create(tss_t *tss, tss_dtor_t dtor) { /* Different error returns are possible. C glues them together into * just failure notification. Can't be optimized to a tail call, * unless thrd_error equals EAGAIN. */ return __pthread_key_create(tss, dtor) ? thrd_error : thrd_success; }