a bug in perl5 under Linux

[p5pRT]

Migrated from rt.perl.org#1791 (status was 'resolved')

Searchable as RT1791$

[p5pRT]

From guoheng.wei@intel.com

% perl -v

This is perl, version 5.005_03 built for i386-linux

% perl
print 8473018401 % 524288 , "\n"
524287

The correct answer should be 33.

Guoheng Wei _.-.
Sr. Component Design Eng. '( ^{_} (
Intel Corp. `~\`-----'\
512-314-0053 )_)---)_)

[p5pRT]

From [Unknown Contact. See original ticket]

I find this problem when I use perl5 compiled under Linux.

% perl -v

This is perl, version 5.005_03 built for i386-linux

% perl
print 8473018401 % 524288 , "\n"
524287

The correct answer should be 33.

% perl -v
This is perl, version 5.005_62 built for i686-linux
[etc]

% perl
print 8473018401 % 524288 , "\n"
33

--tom

[p5pRT]

From @AlanBurlison

% perl -v
This is perl, version 5.005_62 built for i686-linux
[etc]

% perl
print 8473018401 % 524288 , "\n"
33

$ perl -v
This is perl, version 5.005_03 built for sun4-solaris
[etc]

$ perl
print 8473018401 % 524288 , "\n"
524287

Hmm.

Alan Burlison

[p5pRT]

From [Unknown Contact. See original ticket]

Alan Burlison writes​:

% perl
print 8473018401 % 524288 , "\n"
33

$ perl
print 8473018401 % 524288 , "\n"
524287

Hmm.

Well, you see​: (unintentionally) insulting you is not my only function
on p5p.

Ilya

[p5pRT]

From @AlanBurlison

Ilya Zakharevich wrote​:

Well, you see​: (unintentionally) insulting you is not my only function
on p5p.

And the other function is?

;-)

Alan Burlison

[p5pRT]

From [Unknown Contact. See original ticket]

At 20​:59 +0100 1999-11-17, Ilya Zakharevich wrote​:

Alan Burlison writes​:

% perl
print 8473018401 % 524288 , "\n"
33

$ perl
print 8473018401 % 524288 , "\n"
524287

Hmm.

Well, you see​: (unintentionally) insulting you is not my only function
on p5p.

Fine, fine, but does anybody have any idea when and how the problem was
fixed, and whether the fix has yet been/can be applied in the maintenance
track? A grep through _62 Changes for % and modulo sheds no light. All
I've established is that the fix was in place by _57, the earliest
development version I have around.

--
Dominic Dunlop

[p5pRT]

From @vanstyn

In <v03110704b4598751194b@​[212.24.192.242]>, Dominic Dunlop writes​:
:At 20​:59 +0100 1999-11-17, Ilya Zakharevich wrote​:
:> Alan Burlison writes​:
:> > > % perl
:> > > print 8473018401 % 524288 , "\n"
:> > > 33
:>
:> > $ perl
:> > print 8473018401 % 524288 , "\n"
:> > 524287
:> >
:> > Hmm.
:>
:> Well, you see​: (unintentionally) insulting you is not my only function
:> on p5p.
:
:Fine, fine, but does anybody have any idea when and how the problem was
:fixed, and whether the fix has yet been/can be applied in the maintenance
:track? A grep through _62 Changes for % and modulo sheds no light. All
:I've established is that the fix was in place by _57, the earliest
:development version I have around.

For what it's worth​:

crypt% setperl 57
old​: perl5.005_03; new​: perl5.005_57
crypt% perl -wle 'print 8473018401 % 524288'
33
crypt% setperl 56
old​: perl5.005_57; new​: perl5.005_56
crypt% perl -wle 'print 8473018401 % 524288'
524287
crypt%

.. so it was presumably fixed for the first time in _57.

Hugo

[p5pRT]

From [Unknown Contact. See original ticket]

On Thu, Nov 18, 1999 at 11​:41​:09AM +0100, Dominic Dunlop wrote​:

% perl
print 8473018401 % 524288 , "\n"
33

$ perl
print 8473018401 % 524288 , "\n"
524287

Hmm.

Well, you see​: (unintentionally) insulting you is not my only function
on p5p.

Fine, fine, but does anybody have any idea when and how the problem was
fixed, and whether the fix has yet been/can be applied in the maintenance
track?

I think I did it shortly before numconvert modifications.

Ilya

[p5pRT]

From @gsar

On Thu, 18 Nov 1999 11​:41​:09 +0100, Dominic Dunlop wrote​:

Fine, fine, but does anybody have any idea when and how the problem was
fixed, and whether the fix has yet been/can be applied in the maintenance
track? A grep through _62 Changes for % and modulo sheds no light.

  % grep ' % ' Changes | grep mod
  Subject​: [PATCH 5.005_*] Make % use fmod()

Sarathy
gsar@​ActiveState.com