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[perl #121771] Argument "123abc" treated as 0 in increment is actually treated as 123
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From:
Dagfinn Ilmari Mannsåker
Date:
April 30, 2014 13:55
Subject:
[perl #121771] Argument "123abc" treated as 0 in increment is actually treated as 123
Message ID:
rt-4.0.18-31368-1398866109-103.121771-75-0@perl.org
# New Ticket Created by Dagfinn Ilmari Mannsåker
# Please include the string: [perl #121771]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/Ticket/Display.html?id=121771 >
This is a bug report for perl from ilmari@ilmari.org,
generated with the help of perlbug 1.40 running under perl 5.19.9.
-----------------------------------------------------------------
[Please describe your issue here]
When the argument to ++ starts with a number, but contains trailing
crap, the warning is wrong, since the value is actually treated as the
leading numerical part.
$ perl -wE 'my $x = "123abc"; $x++; say $x'
Argument "123abc" treated as 0 in increment (++) at -e line 1.
124
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
Site configuration information for perl 5.19.9:
Configured by ilmari at Fri Feb 21 14:38:49 GMT 2014.
Summary of my perl5 (revision 5 version 19 subversion 9) configuration:
Platform:
osname=linux, osvers=3.2.0-58-generic, archname=x86_64-linux
uname='linux zarquon 3.2.0-58-generic #88-ubuntu smp tue dec 3 17:37:58 utc 2013 x86_64 x86_64 x86_64 gnulinux '
config_args='-de -Dprefix=/home/ilmari/perl5/perlbrew/perls/19.9 -Dman1dir=none -Dman3dir=none -Dcc=ccache cc -Dusedevel -Aeval:scriptdir=/home/ilmari/perl5/perlbrew/perls/19.9/bin'
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=undef
use64bitint=define, use64bitall=define, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='ccache cc', ccflags ='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2',
cppflags='-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.6.3', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='ccache cc', ldflags =' -fstack-protector -L/usr/local/lib'
libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/4.6/include-fixed /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
libc=, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.15'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector'
---
@INC for perl 5.19.9:
/home/ilmari/.perlbrew/libs/19.9@std/lib/perl5/x86_64-linux
/home/ilmari/.perlbrew/libs/19.9@std/lib/perl5
/home/ilmari/perl5/perlbrew/perls/19.9/lib/site_perl/5.19.9/x86_64-linux
/home/ilmari/perl5/perlbrew/perls/19.9/lib/site_perl/5.19.9
/home/ilmari/perl5/perlbrew/perls/19.9/lib/5.19.9/x86_64-linux
/home/ilmari/perl5/perlbrew/perls/19.9/lib/5.19.9
.
---
Environment for perl 5.19.9:
HOME=/home/ilmari
LANG=en_GB.UTF-8
LANGUAGE=en_GB:en
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/ilmari/.perlbrew/libs/19.9@std/bin:/home/ilmari/perl5/perlbrew/bin:/home/ilmari/perl5/perlbrew/perls/19.9/bin:/home/ilmari/bin:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
PERL5LIB=/home/ilmari/.perlbrew/libs/19.9@std/lib/perl5
PERLBREW_BASHRC_VERSION=0.64
PERLBREW_HOME=/home/ilmari/.perlbrew
PERLBREW_LIB=std
PERLBREW_MANPATH=/home/ilmari/.perlbrew/libs/19.9@std/man:/home/ilmari/perl5/perlbrew/perls/19.9/man
PERLBREW_PATH=/home/ilmari/.perlbrew/libs/19.9@std/bin:/home/ilmari/perl5/perlbrew/bin:/home/ilmari/perl5/perlbrew/perls/19.9/bin
PERLBREW_PERL=19.9
PERLBREW_ROOT=/home/ilmari/perl5/perlbrew
PERLBREW_VERSION=0.64
PERL_BADLANG (unset)
PERL_LOCAL_LIB_ROOT=/home/ilmari/.perlbrew/libs/19.9@std
PERL_MB_OPT=--install_base /home/ilmari/.perlbrew/libs/19.9@std
PERL_MM_OPT=INSTALL_BASE=/home/ilmari/.perlbrew/libs/19.9@std
SHELL=/bin/bash
--
"I use RMS as a guide in the same way that a boat captain would use
a lighthouse. It's good to know where it is, but you generally
don't want to find yourself in the same spot." - Tollef Fog Heen
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[perl #121771] Argument "123abc" treated as 0 in increment is actually treated as 123
by Dagfinn Ilmari Mannsåker