DOS ain't dead

Hi everybody!

I have a strange problem with fopen() function with gcc
apparently, most people has the same problem (fopen() php function -> same problem):
https://www.google.fr/#safe=off&q=fopen+network
https://www.google.fr/#safe=off&q=fopen+network+share+bug
and other....

I have tested :
my drive mapped in x:
fopen("x:\myfile.abc, "r");
fopen("x:\\myfile.abc, "r");
fopen("x:/myfile.abc, "r");
fopen("x://myfile.abc, "r");
Or directly with server name :
fopen("\\MyServer\myfile.abc, "r");
fopen("\\\\MyServer\\myfile.abc, "r");
fopen("//MyServer/myfile.abc, "r");
fopen("////MyServer//myfile.abc, "r");

This not work.. (File not exist) fopen = NULL
But if I open another not existing file, he create this file, but empty and fopen not NULL

What is this bug ? There are a final solution for this problem ?

Thank

---
Sébastien FAVIER

ps: Excuse me for my English level, I'm a French student