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[perl #24160] BUG REPORT: INTEGER MATH OCCURRING WHEN NOT EXPECTED

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From:
James E Keenan via RT
Date:
January 15, 2013 00:51
Subject:
[perl #24160] BUG REPORT: INTEGER MATH OCCURRING WHEN NOT EXPECTED
Message ID:
rt-3.6.HEAD-4370-1358211098-1070.24160-15-0@perl.org
On Sun Oct 07 08:07:13 2012, jkeenan wrote:
> On Thu Oct 09 13:26:15 2003, nicholas wrote:
> > On Wed, Oct 08, 2003 at 04:39:31PM -0000, wasquith@red1ast.cr.usgs.gov
> > (via RT) wrote:
> > 
> > > I have stumbled onto strange float/integer/string behavior on
> > Perl5.8.0 and
> > > Perl5.8.1 that did not exist in prior Perls.  I have read (see
> > REFERENCES)
> > > that Numbers are better behaved in Perl5.8.+ and math is no longer
> > purely
> > > floating point.  I am certain that this change has a weakness.
> > 
> > This change was motivated by the desire to cope with the increasing
> > use of 64 bit values in everyday use, such as files >2Gb, 64 bit
> > device
> > numbers and nanosecond timings
> > 
> > It means that configuring perl to use 64 bit integers doesn't cause
> > other
> > parts of arithmetic to go wrong. I'm still digesting your
> > comprehensive
> > report, but I don't believe that what you are seeing should be
> > happening
> > (hence it would seem that it is a bug in the implementation)
> > 
> > 
> > If you compile perl with the C pre-processor flag
> > NO_PERL_PRESERVE_IVUV
> > defined you should get (close to) the 5.6.1 implementation of numeric
> > operations. This may solve your problems.
> > 
> > Meanwhile, I will continue to investigate your report. If possible,
> > could you also try the modifications that Dave Mitchell suggested?
> > 
> > Thanks
> > 
> > Nicholas Clark
> > 
> 
> 
> Nick, Dave:
> 
> Can we figure out some disposition for this ticket which has been in the
> Stalled queue for nine years?
> 
> Thank you very much.
> Jim Keenan

No correspondence since last October.  Any ideas?

Thank you very much.
Jim Keenan

---
via perlbug:  queue: perl5 status: open
https://rt.perl.org:443/rt3/Ticket/Display.html?id=24160

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