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[perl #24069] Strange ++substr behaviour
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From:
perlbug-followup
Date:
September 29, 2003 20:27
Subject:
[perl #24069] Strange ++substr behaviour
Message ID:
rt-24069-65421.9.4578547354736@rt.perl.org
# New Ticket Created by book@mongueurs.net
# Please include the string: [perl #24069]
# in the subject line of all future correspondence about this issue.
# <URL: http://rt.perl.org/rt2/Ticket/Display.html?id=24069 >
This is a bug report for perl from book@mongueurs.net,
generated with the help of perlbug 1.34 running under perl v5.8.0.
-----------------------------------------------------------------
[Please enter your report here]
Hello,
The following program
my $c = "bzr";
print ++substr($c, 1, 1), " $c";
ouputs
a baar
when I think it should really output
aa baar
Just like the following
my $c = 'z';
print ++$c;
(as expected) does
aa
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
Site configuration information for perl v5.8.0:
Configured by root at Wed Oct 16 23:02:33 CEST 2002.
Summary of my perl5 (revision 5.0 version 8 subversion 0) configuration:
Platform:
osname=linux, osvers=2.2.20, archname=i686-linux
uname='linux rose 2.2.20 #3 smp mon jul 15 02:31:00 cest 2002 i686 unknown unknown gnulinux '
config_args='-Uinstallusrbinperl -Dprefix=/home/perl'
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=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 ='-fno-strict-aliasing -I/usr/local/include -DDEBUGGING -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O3',
cppflags='-fno-strict-aliasing -I/usr/local/include -DDEBUGGING'
ccversion='', gccversion='2.95.4 20011002 (Debian prerelease)', 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=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib
libs=-lnsl -ldl -lm -lc -lcrypt -lutil
perllibs=-lnsl -ldl -lm -lc -lcrypt -lutil
libc=/lib/libc-2.2.5.so, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.2.5'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
---
@INC for perl v5.8.0:
/home/book/sources/perl
/home/book/bin/perl
/home/perl/lib/5.8.0/i686-linux
/home/perl/lib/5.8.0
/home/perl/lib/site_perl/5.8.0/i686-linux
/home/perl/lib/site_perl/5.8.0
/home/perl/lib/site_perl
.
---
Environment for perl v5.8.0:
HOME=/home/book
LANG=fr_FR@euro
LANGUAGE (unset)
LC_ALL=french
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/book/bin:/usr/local/bin:/usr/bin:/bin:/usr/bin/X11:/usr/games:/usr/games:/usr/local/games:/usr/local/lib/jdk/bin:.
PERL5LIB=/home/book/sources/perl:/home/book/bin/perl
PERL_BADLANG (unset)
SHELL=/bin/bash
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[perl #24069] Strange ++substr behaviour
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