[jifty-devel] "Attempt to free unreferenced scalar" using pager

[Peter Mottram]

Having just setup my shiny new development box & installed Jifty::DBI 0.49 
plus Jifty 0.71129 I now get the following error logged when switching 
between pages using the pager:

Attempt to free unreferenced scalar: SV 0x9cb2168, Perl interpreter: 0x81 
70008 at 
/usr/local/share/perl/5.10.0/auto/Jifty/web/templates/__jifty/webservices/xml 
line 64.

This can be confirmed using the MyWeblog example. I also tested against 
trunk rev 5482 with the same result.

I have tracked this down in __jifty/webservices/xml to line 61 
in v0.71129 or line 66 in trunk...

     Jifty->web->current_region->exit while Jifty->web->current_region;

but have not managed to track this further down inside Jifty::Web::*

My old box with threaded 5.8.8 did not have this problem.

Here's my perl build info in case it shows something obvious...

Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
   Platform:
     osname=linux, osvers=2.6.24.4, archname=i486-linux-gnu-thread-multi
     uname='linux ninsei 2.6.24.4 #1 smp preempt fri apr 18 15:36:09 pdt 
2008 i68
6 gnulinux '
     config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN 
-Dcccdlflags=-f
PIC -Darchname=i486-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.10 
-Darc
hlib=/usr/lib/perl/5.10 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 
-Dvendo
rarch=/usr/lib/perl5 -Dsiteprefix=/usr/local 
-Dsitelib=/usr/local/share/perl/5.1
0.0 -Dsitearch=/usr/local/lib/perl/5.10.0 -Dman1dir=/usr/share/man/man1 
-Dman3di
r=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 
-Dsiteman3dir=/usr/local
/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager 
-Uafs -Ud_
csh -Ud_ualarm -Uusesfio -Uusenm -DDEBUGGING=-g -Doptimize=-O2 
-Duseshrplib -Dli
bperl=libperl.so.5.10.0 -Dd_dosuid -des'
     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 -DDEBIAN 
-fno-strict-aliasing
-pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
     optimize='-O2 -g',
     cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing 
-pipe -I/
usr/local/include'
     ccversion='', gccversion='4.2.3 (Debian 4.2.3-5)', 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 =' -L/usr/local/lib'
     libpth=/usr/local/lib /lib /usr/lib /usr/lib64
     libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
     perllibs=-ldl -lm -lpthread -lc -lcrypt
     libc=/lib/libc-2.7.so, so=so, useshrplib=true, 
libperl=libperl.so.5.10.0
     gnulibc_version='2.7'
   Dynamic Linking:
     dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
     cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib'


Characteristics of this binary (from libperl):
   Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
                         PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP 
USE_ITHREADS
                         USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API
   Built under linux
   Compiled at May  8 2008 13:16:21
   @INC:
     /etc/perl
     /usr/local/lib/perl/5.10.0
     /usr/local/share/perl/5.10.0
     /usr/lib/perl5
     /usr/share/perl5
     /usr/lib/perl/5.10
     /usr/share/perl/5.10
     /usr/local/lib/site_perl
     .


R.
PeteM