RE: diff 2.8 large file read fails for Tru64 5.1

[Coleman, Michael]

> -----Original Message-----
> From: Paul Eggert [mailto:address@hidden
> Sent: Monday, April 01, 2002 6:14 PM

> Thanks for the bug report, Mike.  Yes, POSIX requires that this must
> work, so it is clearly a Tru64 bug.

I'll attempt to report it when I get a chance.

> Can you please try this patch on your
> Tru64 host?  Thanks.

It appears to work.  (I can't easily verify the output, but both it and the 
system call trace seem reasonable.)

Also, regarding SSIZE_MAX, it's 2**63 - 1 (for both gcc and cc) under Tru64 5.1.

It seems like diff wants to start by reading in the entire contents of both 
files.  I was hoping that the '-H' option might work something like the vendor 
'-h' option, which theoretically will take a stab at files of arbitrary length. 
 (I say "theoretically" because "diff -h" explodes immediately for large files 
under Tru64 5.1.)

Would an '-h' be conceivable with the current algorithm?

Thanks,
Mike