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[perl #23731] infinity is formatted with leading spaces e.g. " Inf"
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From:
Brian Fraser via RT
Date:
August 7, 2013 07:59
Subject:
[perl #23731] infinity is formatted with leading spaces e.g. " Inf"
Message ID:
rt-3.6.HEAD-22538-1375862369-898.23731-15-0@perl.org
On Thu Sep 04 17:46:28 2003, dcd wrote:
>
> This is a bug report for perl from david.dyck@fluke.com,
> generated with the help of perlbug 1.34 running under perl v5.9.0.
>
>
> -----------------------------------------------------------------
> [Please enter your report here]
>
> I tried to use CPAN's Set::Infinite, which seems to
> care about the string representation of infinity.
>
> On my computer perl reports
>
> perl -wle 'print q(").(100**100**100).q(")'
> " Inf"
>
> It's my guess that this may be a libc5 issue, but does
> perl have a standard way that it proposed to export
> the infinity string to it's client scripts?
>
> My old perl3 and perl4 binaries also
> print the same string for infinity as
> perl5.9.0.
>
> The following test program in C doesn't display
> the leading spaces, why does perl?
>
> int main() {
> long linf = 0x7f800000;
> printf( "<%g>\n", *(float*) &linf);
> return 0;
> }
>
> which prints
> <Inf>
>
>
>
> [Please do not change anything below this line]
> -----------------------------------------------------------------
> ---
> Flags:
> category=core
> severity=medium
> ---
> Site configuration information for perl v5.9.0:
>
> Configured by dcd at Thu Sep 4 15:03:57 PDT 2003.
>
> Summary of my perl5 (revision 5.0 version 9 subversion 0 patch 21036)
> configuration:
> Platform:
> osname=linux, osvers=2.4.23pre1, archname=i686-linux
> uname='linux dd 2.4.23pre1 #2 wed aug 27 11:20:37 pdt 2003 i686 '
> config_args='-Dmksymlinks -Dinstallusrbinperl -Uversiononly
> -Dusedevel -Doptimize=-O3 -g -de -Dcf_email=david.dyck@fluke.com'
> hint=recommended, useposix=true, d_sigaction=define
> usethreads=undef useithreads=undef usemultiplicity=undef
> useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
> use64bitint=undef use64bitall=undef uselongdouble=undef
> usemymalloc=n, bincompat5005=undef
> Compiler:
> cc='cc', ccflags ='-DDEBUGGING -fno-strict-aliasing
> -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
> optimize='-O3 -g',
> cppflags='-DDEBUGGING -fno-strict-aliasing -I/usr/local/include'
> ccversion='', gccversion='egcs-2.91.66.1 19990314/Linux (egcs-
> 1.1.2 release)', gccosandvers=''
> intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
> d_longlong=define, longlongsize=8, d_longdbl=define,
> longdblsize=12
> ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
> lseeksize=4
> alignbytes=4, prototype=define
> Linker and Libraries:
> ld='cc', ldflags =' -L/usr/local/lib'
> libpth=/usr/local/lib /lib /usr/lib
> libs=-lgdbm -ldbm -ldb -ldl -lm -lc
> perllibs=-ldl -lm -lc
> libc=/lib/libc.so.5.4.44, so=so, useshrplib=false,
> libperl=libperl.a
> gnulibc_version=''
> Dynamic Linking:
> dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-
> rdynamic'
> cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'
>
> Locally applied patches:
> DEVEL20173
>
> ---
> @INC for perl v5.9.0:
> /usr/local/lib/perl5/5.9.0/i686-linux
> /usr/local/lib/perl5/5.9.0
> /usr/local/lib/perl5/site_perl/5.9.0/i686-linux
> /usr/local/lib/perl5/site_perl/5.9.0
> /usr/local/lib/perl5/site_perl/5.8.0/i686-linux
> /usr/local/lib/perl5/site_perl/5.8.0
> /usr/local/lib/perl5/site_perl
> .
>
> ---
> Environment for perl v5.9.0:
> HOME=/home/dcd
> LANG (unset)
> LANGUAGE (unset)
> LD_LIBRARY_PATH (unset)
> LOGDIR (unset)
>
PATH=/home/dcd/bin:/sbin:/usr/local/bin:/bin:/usr/bin:/usr/X11/bin:/usr/games:/usr/local/samba:/home/hobbes/tools/scripts:/home/hobbes/tools/linux:/usr0/hobbes/tools/scripts:/usr0/dcd/bin:/apps/general/bin:/usr/public
> PERL5_CPANPLUS_CONFIG=/home/dcd/.cpanplus/config
> PERL_BADLANG (unset)
> SHELL=/bin/bash
This bug report hasn't seen any activity in seven years. I can't
reproduce the leading spaces on any OS that I have at hand*, and the
value of d_Gconvert looks drastically different too. Short of someone
being able to reproduce this, can we close the ticket?
[*]
Ubuntu 11.04 & 13.04:
"inf"
Archlinux:
"inf"
Debian wheezy:
"inf"
CentOS 5.6 & 6:
"inf"
OpenSUSE:
"inf"
Gentoo:
"inf"
Android 4.0.4:
"Inf"
Mac OS X 10.8.4:
"inf"
QNX Neutrino:
"inf"
Windows Server 2008:
"1.#INF"
Windows Server 2008, cygwin:
"inf"
Syllable:
"inf"
Haiku:
"inf"
Solaris 11:
"Infinity"
OmniOS:
"Infinity"
FreeBSD 9.0:
"inf"
NetBSD 5.1.2:
"inf"
OpenBSD 5.0:
"inf"
--hugmeir
---
via perlbug: queue: perl5 status: open
https://rt.perl.org:443/rt3/Ticket/Display.html?id=23731
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[perl #23731] infinity is formatted with leading spaces e.g. " Inf"
by Brian Fraser via RT