problem to solve: the app fails on all files larger than 4.2GB. The
4.2GB is around 2^32B. ie, you probably have an overflow problem
Line 191 of utils.cpp: unsigned long fileSize = FileSize(fileName);
i am assuming here that FileSize returns an unsigned long?
Simple enough. But when I change it to be a double, double fileSize = FileSize(fileName); gcc gives the following warning: utils/utils.cpp:191: warning: converting to 'long unsigned int' from 'double'
are you sure this is the error message? fileName is probably not a double, so i can't see where the conversion _from_ a double occurs.
Why does GCC do this conversion? How can I keep fileSize long?
you want FileSize to return an unsigned long long (a 64 bit value), so declare fileSize as an unsigned long long. however, i get the impression that FileSize only returns a 32 bit value, so you need to change this. post the source for FileSize and i'll see if i can help.
