96 int open(const char* pathname, int flags, ...) {  in open()  argument
97     if (__builtin_constant_p(flags)) {  in open()
98         if ((flags & O_CREAT) && __builtin_va_arg_pack_len() == 0) {  in open()
107     if ((__builtin_va_arg_pack_len() == 0) && !__builtin_constant_p(flags)) {  in open()
108         return __open_2(pathname, flags);  in open()
111     return __open_real(pathname, flags, __builtin_va_arg_pack());  in open()
115 int openat(int dirfd, const char* pathname, int flags, ...) {  in openat()  argument
116     if (__builtin_constant_p(flags)) {  in openat()
117         if ((flags & O_CREAT) && __builtin_va_arg_pack_len() == 0) {  in openat()
126     if ((__builtin_va_arg_pack_len() == 0) && !__builtin_constant_p(flags)) {  in openat()
127         return __openat_2(dirfd, pathname, flags);  in openat()
130     return __openat_real(dirfd, pathname, flags, __builtin_va_arg_pack());  in openat()