sorthelp_s
ATF_CHECK(qsort_s(&b, 1, RSIZE_MAX + 1, sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, -1, sizeof(int), sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, RSIZE_MAX + 1, sizeof(int), sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, nitems(b), -1, sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, nitems(b), RSIZE_MAX + 1, sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, nitems(b), sizeof(int), sorthelp_s, &thunk) == 0);
sorthelp_s, &thunk);
ATF_CHECK(qsort_s(&b, -1, sizeof(int), sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, RSIZE_MAX + 1, sizeof(int), sorthelp_s, &thunk) != 0);
ATF_CHECK(qsort_s(&b, 1, -1, sorthelp_s, &thunk) != 0);