309   char* p = realpath(path, nullptr);  in TEST()
316   char* p = realpath("", nullptr);  in TEST()
323   char* p = realpath("/this/directory/path/almost/certainly/does/not/exist", nullptr);  in TEST()
334   char* p = realpath(link.c_str(), nullptr);  in TEST()
341   char* p = realpath("/dev/null/.", nullptr);  in TEST()
346   p = realpath("/dev/null/..", nullptr);  in TEST()
351 TEST(stdlib, realpath) {  in TEST()  argument
359   char* p = realpath("/proc/self/exe", buf);  in TEST()
362   p = realpath("/proc/self/exe", nullptr);  in TEST()
368   char* p = realpath("/proc/./version", nullptr);  in TEST()
374   char* p = realpath("/dev/../proc/version", nullptr);  in TEST()
402   char* result = realpath(path.c_str(), nullptr);  in TEST()