At the begining of the prog, I allocate 64000: unsigned char *buffer = (unsigned char*)malloc(64000); and it frees it at when ending: free(buffer); and I compile it with DJGPP... and I run the prog.... and sometimes the prog crashes general protection fault exeption 13... etc... why? I don''t understand what''s wrong... please help me

Check some of this common errors :
- Do you free() it more than one time ? This is not good!
- Do you use buffer after you freed it ?

Moreover, you should check the return value of malloc(). If buffer = NULL then it wasn''t allocated and freeing it could be harmful.

How long is your source code ? If it''s short (and if you don''t care of course), post it or mail it to me (benjamin.karaban@laposte.net)




Prosper / LOADED corporation

OK
thanx man

I think it was what you said
so I wrote:
if((unsigned char *buffer=(unsigned char *)malloc(64000)) == NULL) return 0;

and I havent any probs actually...
et merci beaucoup
hehe
bye

Yep, it is important! to say the least that you check return values of things like MALLOC, reads, writes, infact anything in which could result in you reading or writing to a null pointer.

Doing so will seggy everytime.