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panic: free from wrong pool when using a constant in a print statement #10489

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p5pRT opened this issue Jul 16, 2010 · 4 comments
Closed

panic: free from wrong pool when using a constant in a print statement #10489

p5pRT opened this issue Jul 16, 2010 · 4 comments
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distro-Linux type-core type-parsing

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@p5pRT
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p5pRT commented Jul 16, 2010

Migrated from rt.perl.org#76540 (status was 'resolved')

Searchable as RT76540$
@p5pRT
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p5pRT commented Jul 16, 2010

From mls@suse.de

Created by mls@suse.de

The following test program aborts with 'panic​: free from wrong pool'​:

  use constant FOO => 'bar';
  print FOO, "\n";
  print FOO, "\n";

When a "use strict" is added, it prints "Attempt to free unreferenced
scalar...".

Perl Info 

Flags:
    category=core
    severity=medium

This perlbug was built using Perl 5.12.1 - Thu Jul  1 19:03:07 UTC 2010
It is being executed now by  Perl 5.12.1 - Thu Jul  1 18:59:14 UTC 2010.

Site configuration information for perl 5.12.1:

Configured by abuild at Thu Jul  1 18:59:14 UTC 2010.

Summary of my perl5 (revision 5 version 12 subversion 1) configuration:
   
  Platform:
    osname=linux, osvers=2.6.32, archname=i586-linux-thread-multi
    uname='linux build35 2.6.32 #1 smp 2010-01-06 16:07:25 +0100 i686 athlon i386 gnulinux '
    config_args='-ds -e -Dprefix=/usr -Dvendorprefix=/usr -Dinstallusrbinperl -Dusethreads -Di_db -Di_dbm -Di_ndbm -Di_gdbm -Duseshrplib=true -Doptimize=-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -Wall -pipe -Accflags=-DPERL_USE_SAFE_PUTENV'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -Wall -pipe',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DPERL_USE_SAFE_PUTENV -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector'
    ccversion='', gccversion='4.5.0 20100604 [gcc-4_5-branch revision 160292]', 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 =' -fstack-protector'
    libpth=/lib /usr/lib /usr/local/lib
    libs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=/lib/libc-2.11.2.so, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.11.2'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-rpath,/usr/lib/perl5/5.12.1/i586-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -fomit-frame-pointer -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -Wall -pipe'

Locally applied patches:
    


@INC for perl 5.12.1:
    /usr/lib/perl5/site_perl/5.12.1/i586-linux-thread-multi
    /usr/lib/perl5/site_perl/5.12.1
    /usr/lib/perl5/vendor_perl/5.12.1/i586-linux-thread-multi
    /usr/lib/perl5/vendor_perl/5.12.1
    /usr/lib/perl5/5.12.1/i586-linux-thread-multi
    /usr/lib/perl5/5.12.1
    .


Environment for perl 5.12.1:
    HOME=/suse/mls
    LANG (unset)
    LANGUAGE (unset)
    LC_COLLATE=POSIX
    LC_CTYPE=de_DE@euro
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/suse/mls/bin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin:/bin:/usr/lib/java/bin:/usr/games/bin:/usr/games:/opt/gnome/bin:/opt/kde/bin:/usr/openwin/bin:/opt/pilotsdk/bin:/suse/mls/korn
    PERL_BADLANG (unset)
    SHELL=/bin/tcsh

@p5pRT
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p5pRT commented Jul 24, 2010

From @iabyn

On Fri, Jul 16, 2010 at 06​:21​:10AM -0700, mls@​suse.de wrote​:

The following test program aborts with 'panic​: free from wrong pool'​:

use constant FOO => 'bar';
print FOO\, "\\n";
print FOO\, "\\n";

When a "use strict" is added, it prints "Attempt to free unreferenced
scalar...".

Thanks for the report. This has now been fixed in bleadperl with commit
e5c69c9.

--
I don't want to achieve immortality through my work...
I want to achieve it through not dying.
  -- Woody Allen

@p5pRT
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p5pRT commented Jul 24, 2010

The RT System itself - Status changed from 'new' to 'open'

@p5pRT
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p5pRT commented Jul 24, 2010

@iabyn - Status changed from 'open' to 'resolved'

@p5pRT p5pRT closed this as completed Jul 24, 2010
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