Re: 64 bit math on ia32

[Andreas Jaeger]

Dennis Cartier <address@hidden> writes:

> Hello,
>
> I am not sure this is a bug with glibc. I am trying to use Large File
> Support with Debian Sid. I have compiled my program with the proper
> defines. When I try to calculate my index as a gint64 var, it wraps at
> 32 bits and my file is limited to 4GB.

Do you have proper prototypes?  Compile with gcc -Wall and fix the
warnings.

I expect that this is a problem in your program,

Andreas

> I would have thought that Gcc would see that I am placing the final
> result into a 64 bit type and would substitute in 64bit compatible math.
> Is this not the case?
>
> If this will not work, how can I calculate a 64bit offset. I assume LFS
> is not limited only to 64bit architectures?
>
> Any help would be appreciated.


-- 
 Andreas Jaeger
  SuSE Labs address@hidden
   private address@hidden
    http://www.suse.de/~aj