From @eserte

This is a bug report for perl from slaven@rezic.de,
generated with the help of perlbug 1.40 running under perl 5.21.5.

Almost all Tk tests fail. A simple test case is

$ perl5.21.5 -Mblib -MTk -MTk::ColorEditor -e 'tkinit->ColorEditor()'
Modification of a read-only value attempted at /home/e/eserte/src/CPAN.local/Tk/blib/lib/Tk/Widget.pm line 1219.
at /home/e/eserte/src/CPAN.local/Tk/blib/lib/Tk/Widget.pm line 203.

Bisect says:

a623f89 is the first bad commit
commit a623f89
Author: Father Chrysostomos <sprout@cpan.org>
Date: Fri Sep 19 23:12:48 2014 -0700

Implement the bipolar read-only system

This fixes bugs related to Hash::Util::unlock accidentally unlocking
internal scalars (e.g., that returned by undef()) and allowing them to
be modified.

Internal read-only values are now marked by two flags, the regular
read-only flag, and the new ‘protected’ flag.

Before this SvREADONLY served two purposes:

1) The code would use it to protect things that must not be modi-
fied, ever (except when the core sees fit to do so).
2) Hash::Util and everybody else would use it to make this unmodifia-
ble temporarily when requested by the user.

Internals::SvREADONLY serves the latter purpose and only flips the
read-only flag, so things that need to stay read-only will remain so,
because of the ‘other’ read-only flag, that CPAN doesn’t know about.
(If you are a CPAN author, do not read this.)

Another possible victim: TOBYINK/Acme-Futuristic-Perl-0.001.tar.gz
A sample fail report here:
http://www.cpantesters.org/cpan/report/39d793a4-614c-11e4-ba7c-ee3de0bfc7aa (which
also has a "Modification of a read-only value attempted" error)

Regards,
Slaven

Flags:
category=core
severity=high

Site configuration information for perl 5.21.5:

Configured by eserte at Sun Oct 26 13:16:39 CET 2014.

Summary of my perl5 (revision 5 version 21 subversion 5) configuration:

Platform:
osname=freebsd, osvers=9.2-release, archname=amd64-freebsd
uname='freebsd cvrsnica.herceg.de 9.2-release freebsd 9.2-release #0 r255898: thu sep 26 22:50:31 utc 2013 root@bake.isc.freebsd.org:usrobjusrsrcsysgeneric amd64 '
config_args='-D useshrplib=true -Dprefix=/usr/perl5.21.5p -Dusemymalloc=n -D cc=ccache cc -D usedevel=define -Dgccansipedantic -de'
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 ='-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_FORTIFY_SOURCE=2',
optimize='-O2 -pipe',
cppflags='-DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.2.1 20070831 patched [FreeBSD]', gccosandvers=''
intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16, longdblkind=3
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 ='-pthread -Wl,-E -fstack-protector -L/usr/local/lib'
libpth=/usr/lib /usr/local/lib /usr/include/gcc/4.2 /usr/lib
libs=-lgdbm -lm -lcrypt -lutil -lc
perllibs=-lm -lcrypt -lutil -lc
libc=, so=so, useshrplib=true, libperl=libperl.so
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' -Wl,-R/usr/perl5.21.5p/lib/5.21.5/amd64-freebsd/CORE'
cccdlflags='-DPIC -fPIC', lddlflags='-shared -L/usr/local/lib -fstack-protector'

@INC for perl 5.21.5:
/usr/perl5.21.5p/lib/site_perl/5.21.5/amd64-freebsd
/usr/perl5.21.5p/lib/site_perl/5.21.5
/usr/perl5.21.5p/lib/5.21.5/amd64-freebsd
/usr/perl5.21.5p/lib/5.21.5
.

Environment for perl 5.21.5:
HOME=/home/e/eserte
LANG (unset)
LANGUAGE (unset)
LC_ALL=de_DE.UTF-8
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/e/eserte/bin/freebsd9.1:/home/e/eserte/bin/sh:/home/e/eserte/bin:/usr/games:/home/e/eserte/devel
PERLDOC=-MPod::Perldoc::ToTextOverstrike
PERL_BADLANG (unset)
PERL_HTML_DISPLAY_CLASS=HTML::Display::Mozilla
SHELL=/usr/local/bin/zsh

Bleadperl breaks SREZIC/Tk-804.032.tar.gz #14202

Description

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions