can't write to files greater than 2Gb using C++

[Ashok.Yadav@xxxxxxx]

Hi gcc users,
                           I am unable to write to files having size
graeter than 2Gb using a simple C++ program compiled using g++  and  with
flags _LARGEFILE64_SOURCE  and _FILE_OFFSET_BITS=64.

Can somebody help me out?

Ashok

Mumbai, INDIA