hcreate_r
int hcreate_r(size_t, struct hsearch_data *);
return hcreate_r(nel, &htable);
REQUIRE_ERRNO(hcreate_r(16, &t) != 0);
REQUIRE_ERRNO(hcreate_r(16, &t));
REQUIRE_ERRNO(hcreate_r(16, &t));
REQUIRE_ERRNO(hcreate_r(16, &t));