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Re: op/arith.t

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Nicholas Clark
July 6, 2001 13:21
Re: op/arith.t
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On Fri, Jul 06, 2001 at 03:38:36PM -0400, Norton Allen wrote:
> Under Neutrino, I'm failing a test in op/arith.t.
> The crux of the matter is:
>   perl -e '$x = 8589934590; print $x, "\n"'
> produces '4294967294' (i.e. garbage). Where/how is that
> large constant converted to an integer?

toke.c:#if defined(Strtol) && defined(Strtoul)
toke.c:         iv = Strtol(PL_tokenbuf, (char**)NULL, 10);
toke.c:    Strtol() and Strtoul() are used above.

I think, but I've not looked closed for some weeks.

What do 
perl -e '$x = "8589934590"; print $x + 0, "\n"'
perl -MPOSIX -e '$! = 0; $x = strtol("8589934590"); print "$!\n"'

give you?

My hunch is that your strtol isn't setting errno correctly.
[If this is right I'd expect my first to produce 8589934590 because runtime
conversion is now done by Perl_grok_number in numeric, and the second NOT
to return "Numerical result out of range"]

If so you may want to see how uts/strtol_wrap.c is used.
However, I think the long term (eg next 24 hours?) solution is to make
toke.c use Perl_grok_number

Nicholas Clark

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