Hi all,
Keedi Kim wrote:
I use Padre and glibc detects dobule free or corruption in AUIManager.
$ ./dev.pl
*** glibc detected *** /usr/bin/perl: double free or corruption (!prev):
let me add a few bits of information.
First, Padre uses iThreads. Some of the Padre developers seem to point
in that direction whenever a segmentation fault occurrs. It's not the
problem at hand, as far as I can tell.
Here's how you can reproduce a segmentation fault like the one Keedi Kim
reported.
This happens on Ubuntu on x86_64, perl 5.8.8, Alien::wxWidgets 0.41
(with its own wxWidgets compiled), Wx 0.89, current Padre trunk (r2680
http://svn.perlide.org/padre/trunk/Padre).
$ cd padre/trunk/Padre
$ perl Makefile.PL
# Step probably needed to get all the dependencies:
$ sudo cpan .
$ perl Makefile.PL; make
$ gdb perl
(gdb) run -Iblib/lib t/71-perl.t
Starting program: /usr/bin/perl -Iblib/lib t/71-perl.t
[Thread debugging using libthread_db enabled]
[New Thread 0x7f2a7b4476e0 (LWP 25872)]
1..12
[New Thread 0x41995950 (LWP 25879)]
[Thread 0x41995950 (LWP 25879) exited]
[New Thread 0x42196950 (LWP 25880)]
[Thread 0x42196950 (LWP 25880) exited]
ok 1
ok 2 - The object isa Padre::Document
ok 3 - The object isa Padre::Document::Perl
ok 4 - filename
ok 5 - The object isa PPI::Document
ok 6 - The object isa PPI::Token::Symbol
ok 7 - find_token_at_location returns the same token as a manual search
ok 8 - The object isa PPI::Statement::Variable
ok 9 - find_token_at_location returns the same token as a manual search
ok 10 - Correct declaration found
ok 11
ok 12 - no warnings
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f2a7b4476e0 (LWP 25872)]
0x00007f2a7a872bf0 in ?? () from /lib/libc.so.6
(gdb) bt
#0 0x00007f2a7a872bf0 in ?? () from /lib/libc.so.6
#1 0x00007f2a6fc5d91d in XS_Wx__AuiManager_DESTROY () from
/usr/local/lib/perl/5.8.8/auto/Wx/AUI/AUI.so
#2 0x00007f2a7afa82b3 in Perl_pp_entersub () from /usr/lib/libperl.so.5.8
#3 0x00007f2a7af4f837 in ?? () from /usr/lib/libperl.so.5.8
#4 0x00007f2a7af50580 in Perl_call_sv () from /usr/lib/libperl.so.5.8
#5 0x00007f2a7afb432f in Perl_sv_clear () from /usr/lib/libperl.so.5.8
#6 0x00007f2a7afb4b7e in Perl_sv_free () from /usr/lib/libperl.so.5.8
#7 0x00007f2a7afb4644 in Perl_sv_clear () from /usr/lib/libperl.so.5.8
#8 0x00007f2a7afb4b7e in Perl_sv_free () from /usr/lib/libperl.so.5.8
#9 0x00007f2a7afa15cc in Perl_hv_free_ent () from /usr/lib/libperl.so.5.8
#10 0x00007f2a7afa31a8 in ?? () from /usr/lib/libperl.so.5.8
#11 0x00007f2a7afa3489 in Perl_hv_delete_ent () from /usr/lib/libperl.so.5.8
#12 0x00007f2a7afc7e56 in Perl_pp_delete () from /usr/lib/libperl.so.5.8
#13 0x00007f2a7afa6b1e in Perl_runops_standard () from
/usr/lib/libperl.so.5.8
#14 0x00007f2a7af50580 in Perl_call_sv () from /usr/lib/libperl.so.5.8
#15 0x00007f2a7afb432f in Perl_sv_clear () from /usr/lib/libperl.so.5.8
#16 0x00007f2a7afb4b7e in Perl_sv_free () from /usr/lib/libperl.so.5.8
#17 0x00007f2a7afaf989 in ?? () from /usr/lib/libperl.so.5.8
#18 0x00007f2a7afaf9e1 in Perl_sv_clean_objs () from /usr/lib/libperl.so.5.8
#19 0x00007f2a7af553a5 in perl_destruct () from /usr/lib/libperl.so.5.8
#20 0x0000000000401883 in main ()
I know, no debugging perl or wxWidgets. I'm sorry.
Cheers,
Steffen
