wmemcmp
int wmemcmp(const wchar_t *, const wchar_t *, size_t) __pure;
ATF_REQUIRE(wmemcmp(dstbuf, L"hell", 4) == 0);
ATF_REQUIRE(wmemcmp(dstbuf, L"hell", 4) == 0);
ATF_REQUIRE(wmemcmp(dstbuf, L"hell", 4) == 0);
ATF_REQUIRE(wmemcmp(dstbuf, L"hell", 4) == 0);