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[perl #24407] perl crashes when usings 'exists $foo{}' with shared thread hash

From:
Scott Roy
Date:
November 4, 2003 21:25
Subject:
[perl #24407] perl crashes when usings 'exists $foo{}' with shared thread hash
Message ID:
rt-24407-67035.2.03344661309153@rt.perl.org
# New Ticket Created by  "Scott Roy" 
# Please include the string:  [perl #24407]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt2/Ticket/Display.html?id=24407 >


This is a bug report for perl from hsr@cs.stanford.edu,
generated with the help of perlbug 1.34 running under perl v5.8.0.


-----------------------------------------------------------------
Perl crashes on the following test program:

use threads;
use threads::shared;
my %hash : shared;
exists $hash{1};

The error message is: 'Free to wrong pool 15d26e8 not 1aeb8f0.'

The bug disappears if I eliminate the 'shared' keyword, or if I
use an array instead of a hash.

-----------------------------------------------------------------
---
Flags:
    category=core
    severity=high
---
Site configuration information for perl v5.8.0:

Configured by ActiveState at Mon Mar 31 00:45:28 2003.

Summary of my perl5 (revision 5 version 8 subversion 0) configuration:
  Platform:
    osname=MSWin32, osvers=4.0, archname=MSWin32-x86-multi-thread
    uname=''
    config_args='undef'
    hint=recommended, useposix=true, d_sigaction=undef
    usethreads=undef use5005threads=undef 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='cl', ccflags
='-nologo -Gf -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE
_DES_FCRYPT  -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL
_MSVCRT_READFIX',
    optimize='-MD -Zi -DNDEBUG -O1',
    cppflags='-DWIN32'
    ccversion='', gccversion='', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=undef, longlongsize=8, d_longdbl=define, longdblsize=10
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='__int64',
lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='link', ldflags
'-nologo -nodefaultlib -debug -opt:ref,icf  -libpath:"C:\Opt\Perl\lib\CORE" 
 -machine:x86'
    libpth="C:\Program Files\Intel\VTune50" "C:\Program Files\Microsoft
Visual Studio\VC98\mfc\lib" "C:\Program Files\Microsoft Visual
Studio\VC98\lib" "C:\Opt\Perl\lib\CORE"
    libs=  oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib
comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib  netapi32.lib
uuid.lib wsock32.lib mpr.lib winmm.lib  version.lib odbc32.lib odbccp32.lib
msvcrt.lib
    perllibs=  oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib
comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib  netapi32.lib
uuid.lib wsock32.lib mpr.lib winmm.lib  version.lib odbc32.lib odbccp32.lib
msvcrt.lib
    libc=msvcrt.lib, so=dll, useshrplib=yes, libperl=perl58.lib
    gnulibc_version='undef'
  Dynamic Linking:
    dlsrc=dl_win32.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ',
lddlflags='-dll -nologo -nodefaultlib -debug -opt:ref,icf  -libpath:"C:\Opt\
Perl\lib\CORE"  -machine:x86'

Locally applied patches:
    ACTIVEPERL_LOCAL_PATCHES_ENTRY

---
@INC for perl v5.8.0:
    C:/Opt/Perl/lib
    C:/Opt/Perl/site/lib
    .

---
Environment for perl v5.8.0:
    HOME (unset)
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=C:\Opt\Perl\bin\;C:\Program
Files\MiKTeX\miktex\bin;C:\Perl\bin\;C:\WINNT\system32;C:\WINNT;C:\WINNT\Sys
tem32\Wbem;C:\Program Files\Perforce;C:\Program
Files\Intel\plsuite\bin;C:\Program Files\Intel\VTune50;C:\Program
Files\Microsoft Visual Studio\Common\Tools\WinNT;C:\Program Files\Microsoft
Visual Studio\Common\MSDev98\Bin;C:\Program Files\Microsoft Visual
Studio\Common\Tools;C:\Program Files\Microsoft Visual Studio\VC98\bin;C:\My
Documents\Projects\dom\bin\Release
    PERL_BADLANG (unset)
    SHELL (unset)





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