# New Ticket Created by [EMAIL PROTECTED]
# Please include the string: [perl #34062]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/rt3/Ticket/Display.html?id=34062 >
This is a bug report for perl from [EMAIL PROTECTED],
generated with the help of perlbug 1.35 running under perl v5.8.4.
-----------------------------------------------------------------
[Please enter your report here]
perl -wle 'print for unpack("C*", pack("CZ0", 1, "b"))'
0
This is because a Z0 goes back one position and writes a \0 there
(a Z0 at the start will happily walk outside the string)
After patching:
./perl -Ilib -wle 'print for unpack("C*", pack("CZ0", 1, "b"))'
1
Patch (relative to 5.8.6)
--- pp_pack.c.old Sat Jan 29 13:26:27 2005
+++ pp_pack.c Sat Feb 5 18:25:16 2005
@@ -2030,7 +2030,7 @@
}
if ((I32)fromlen >= len) {
sv_catpvn(cat, aptr, len);
- if (datumtype == 'Z')
+ if (datumtype == 'Z' && len > 0)
*(SvEND(cat)-1) = '\0';
}
else {
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
This perlbug was built using Perl v5.8.6 - Fri Dec 24 19:25:13 CET 2004
It is being executed now by Perl v5.8.4 - Thu Jun 3 13:28:19 CEST 2004.
Site configuration information for perl v5.8.4:
Configured by ton at Thu Jun 3 13:28:19 CEST 2004.
Summary of my perl5 (revision 5 version 8 subversion 4) configuration:
Platform:
osname=linux, osvers=2.6.5, archname=i686-linux-64int-ld
uname='linux quasar 2.6.5 #8 mon apr 5 05:41:20 cest 2004 i686 gnulinux '
config_args=''
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=define use64bitall=undef uselongdouble=define
usemymalloc=y, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-fno-strict-aliasing -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2 -fomit-frame-pointer',
cppflags='-fno-strict-aliasing -I/usr/local/include'
ccversion='', gccversion='3.4.0 20031231 (experimental)', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long long', ivsize=8, nvtype='long double', nvsize=12,
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 -ldb -ldl -lm -lcrypt -lutil -lc
perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
libc=/lib/libc-2.3.2.so, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.3.2'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'
Locally applied patches:
---
@INC for perl v5.8.4:
/usr/lib/perl5/5.8.4/i686-linux-64int-ld
/usr/lib/perl5/5.8.4
/usr/lib/perl5/site_perl/5.8.4/i686-linux-64int-ld
/usr/lib/perl5/site_perl/5.8.4
/usr/lib/perl5/site_perl
.
---
Environment for perl v5.8.4:
HOME=/home/ton
LANG (unset)
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/ton/bin.Linux:/home/ton/bin:/home/ton/bin.SampleSetup:/usr/local/bin:/usr/local/sbin:/home/oracle/product/9.2/bin:/usr/local/ar/bin:/usr/games/bin:/usr/X11R6/bin:/usr/share/bin:/usr/bin:/usr/sbin:/bin:/sbin:.
PERL_BADLANG (unset)
SHELL=/bin/bash
