fseek problem files >2Gb (32-bit compile)

[Rebel]

Code: Select all

FILE *fp;
int offset;
fseek(fp,offset,SEEK_SET);

When the file is >2Gb it crashes.

Changing int offset; to:

Code: Select all

unsigned int offset;
unsigned long long offset; (64 bit in my compiler)

Doesn't help, same crash.

Is there a way out?

[hgm]

https://stackoverflow.com/questions/400 ... -and-ftell

[tmokonen]

Just be aware that _fseeki64 and _ftelli64 are Windows specific. I used the the more portable POSIX functions fseeko64 and ftello64 with GCC under windows successfully, although I am not sure they will work with Microsoft's compiler.

[konsolas]

If you're on windows, you could also switch to c++ (std::ifstream supports all this natively) or use the windows API directly (CreateFile)