From @tromp

Module B​::Deparse.pm uses 9**9**9 to denote infinity.

This causes our Perl code, which happens to install a floating point
overflow handler through MkSwig'ed C-code, to crash.

Writing 1/0 instead of 9**9**9 avoids this problem, and would
seem to be the preferred notation for (positive) infinity.

Could we have all uses of 9**9**9 replaced with 1/0 ?

using /usr/local/products/perl/5.16.0/lib/4.16.0/B/Deparse.pm
with perl version​: 5.16.0
on OS​: Linux 3.11.10-21-default x86_64

From @mauke

Am 31.12.2014 um 03​:14 schrieb John Tromp (via RT)​:

# New Ticket Created by John Tromp
# Please include the string​: [perl #123526]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl5/Ticket/Display.html?id=123526 >

Module B​::Deparse.pm uses 9**9**9 to denote infinity.

This causes our Perl code, which happens to install a floating point
overflow handler through MkSwig'ed C-code, to crash.

Writing 1/0 instead of 9**9**9 avoids this problem, and would
seem to be the preferred notation for (positive) infinity.

Could we have all uses of 9**9**9 replaced with 1/0 ?

using /usr/local/products/perl/5.16.0/lib/4.16.0/B/Deparse.pm
with perl version​: 5.16.0
on OS​: Linux 3.11.10-21-default x86_64

But 1/0 isn't infinity in Perl; it throws an exception. Maybe 0 + 'inf'
would be a better choice.

--
Lukas Mai <plokinom@​gmail.com>

The RT System itself - Status changed from 'new' to 'open'

From @cpansprout

On Wed Dec 31 01​:01​:31 2014, plokinom@​gmail.com wrote​:

Am 31.12.2014 um 03​:14 schrieb John Tromp (via RT)​:

# New Ticket Created by John Tromp
# Please include the string​: [perl #123526]
# in the subject line of all future correspondence about this issue.
# <URL​: https://rt-archive.perl.org/perl5/Ticket/Display.html?id=123526 >

Module B​::Deparse.pm uses 9**9**9 to denote infinity.

This causes our Perl code, which happens to install a floating point
overflow handler through MkSwig'ed C-code, to crash.

Writing 1/0 instead of 9**9**9 avoids this problem, and would
seem to be the preferred notation for (positive) infinity.

Could we have all uses of 9**9**9 replaced with 1/0 ?

using /usr/local/products/perl/5.16.0/lib/4.16.0/B/Deparse.pm
with perl version​: 5.16.0
on OS​: Linux 3.11.10-21-default x86_64

But 1/0 isn't infinity in Perl; it throws an exception. Maybe 0 + 'inf'
would be a better choice.

We could default to 0+'inf' (or 9**9**9) and make it configurable, just as we make '???' configurable.

--

Father Chrysostomos

Agreed; 0+'inf' is much less arbitrary, and therefore prefereable to 999.