Re: Error while generating bearoff database

[Philippe Michel]

On Tue, Oct 06, 2020 at 09:59:20AM +0200, Øystein Schønning-Johansen wrote:

> Could be (I'm not sure as I have not tried) it helps if we change the type
> of  iOffset to unsigned long instead of long. Or maybe even type size_t,
> which is probably the type the fseek() expects.
> 
> No, answering myself...The above suggested fix is not going to work.
> Checking the fseek() manual it actually expects long type offset as the
> argument. This is probably by design, such that you can easily move
> backwards in a file. Can you make a 64bit build? Maybe that will work.

A possible plan could be to use POSIX off_t type and fseeko(), check 
that it still gives the same results as now, possibly after a few fixes, 
then try a #define _FILE_OFFSET_BITS 64, check that it gives the same 
results for small databases (although from a different, larger, file) 
and the right ones for larger databases, possibly after some more fixes.

Even if the default builds stay with the 32 bits interface and databases 
of 2 GB or less, interested users could compile their own version and 
build larger databases.