#753 Attempt to free unreferenced scalar at /POPFile/Loader.pm

[Florent Pillet]

POPfile 0.22.2 crashes regularly on Mac OS X 10.3.7 (so
did previous versions of POPfile, and on various
releases of OS X too).

This time the crash occurs always after these two last
messages:

*** malloc[29256]: Deallocation of a pointer not
malloced: 0xa66678; This could be a double free(), or
free() called with the middle of an allocated block;
Try setting environment variable MallocHelp to see
tools to help
Attempt to free unreferenced scalar at
/POPFile/Loader.pm line 120.

On OS X, the standard malloc outputs the message above
so it's not coming from Perl. My guess is that it's a
bug in Perl that is somehow being caused by the
"attempt to free unreferenced scalar".

[Florent Pillet]

Logged In: YES
user_id=24133

Additional info about the version of Perl OS X 10.3.7 is
running:

(/Library/POPfile/POPFile)% perl -V
Summary of my perl5 (revision 5.0 version 8 subversion 1
RC3) configuration:
Platform:
osname=darwin, osvers=7.0,
archname=darwin-thread-multi-2level
uname='darwin hampsten 7.0 darwin kernel version 6.0:
fri jul 25 16:58:41 pdt 2003;
root:xnu-344.frankd.rootsxnu-344.frankd~objrelease_ppc power
macintosh powerpc '
config_args='-ds -e -Dprefix=/usr -Dccflags=-g -pipe
-Dldflags=-Dman3ext=3pm -Duseithreads -Duseshrplib'
hint=recommended, useposix=true, d_sigaction=define
usethreads=define 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='cc', ccflags ='-g -pipe -pipe -fno-common
-DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing
-I/usr/local/include',
optimize='-Os',
cppflags='-no-cpp-precomp -g -pipe -pipe -fno-common
-DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing
-I/usr/local/include'
ccversion='', gccversion='3.3 20030304 (Apple Computer,
Inc. build 1495)', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8,
byteorder=4321
d_longlong=define, longlongsize=8, d_longdbl=define,
longdblsize=8
ivtype='long', ivsize=4, nvtype='double', nvsize=8,
Off_t='off_t', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='MACOSX_DEPLOYMENT_TARGET=10.3 cc', ldflags
='-L/usr/local/lib'
libpth=/usr/local/lib /usr/lib
libs=-ldbm -ldl -lm -lc
perllibs=-ldl -lm -lc
libc=/usr/lib/libc.dylib, so=dylib, useshrplib=true,
libperl=libperl.dylib
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dyld.xs, dlext=bundle, d_dlsymun=undef,
ccdlflags=' '
cccdlflags=' ', lddlflags='-bundle -undefined
dynamic_lookup -L/usr/local/lib'

Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY USE_ITHREADS
USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
Locally applied patches:
RC3
Built under darwin
Compiled at Sep 12 2003 19:50:49
@INC:
/System/Library/Perl/5.8.1/darwin-thread-multi-2level
/System/Library/Perl/5.8.1
/Library/Perl/5.8.1/darwin-thread-multi-2level
/Library/Perl/5.8.1
/Library/Perl
/Network/Library/Perl/5.8.1/darwin-thread-multi-2level
/Network/Library/Perl/5.8.1
/Network/Library/Perl
.