std::string tmp= create_tmpfile(__func__);
test_compare(-1, access(tmp.c_str(), R_OK));
test_compare(-1, access(tmp.c_str(), F_OK));
std::string tmp= create_tmpfile(__func__);
test_compare(-1, access(tmp.c_str(), R_OK));
test_compare(-1, access(tmp.c_str(), F_OK));