fread() bug in Visual C runtime library, what is the Visual C++ version?

[forester]

I read following forum post about the problem that fread() function can't read large files:
http://stackoverflow.com/questions/7...-read-by-fread

I am now writing a program that need large file support on VS2008, I use fopen, fread and fwrite to process files, some of the files maybe about 4G. If there is a bug in fread() function in Visual C runtime library, what is the version of the Visual C++? Thank you!

[VictorN]

Since you are asking in the Visual C++ Programming forum, I can suggest you using either Win32 API (CreateFile, ReadFile, WriteFile,...) or MFC CFile class methods.

[OReubens]

You can use CFile which is based on basic windows file access.

don't use CStdioFile, which is based around FILE and fread() (and it's family of functions).

[forester]

Thank you very much for your replies! I am re-writing the code using CreateFile, ReadFile, WriteFile, and CloseHandle. and commented out the fopen, fread and fwrite.

But I still want to know is there really a bug in fread in Visual C++ that can't process large file. Thanks!

Following are similar questions I searched online :
https://social.msdn.microsoft.com/Fo...rum=vclanguage

http://bytes.com/topic/c/answers/825...ails-files-4gb

[OReubens]

it's not a bug, it's simply how things are. fread returns a size_t and takes size_t parameters, which on win32 has the range of an unsigned int.
can't fix this without making the code non-standard C.

if you compile as Win64, it'll work.