[Gtk2-perl-bugs] [Bug 680380] New: attempt to release non-allocated block (Glib/Gtk3)

[gnome-perl (bugzilla.gnome.o. <bug...@gn...>]

https://bugzilla.gnome.org/show_bug.cgi?id=680380
  gnome-perl | Glib | unspecified

           Summary: attempt to release non-allocated block (Glib/Gtk3)
    Classification: Bindings
           Product: gnome-perl
           Version: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: Glib
        AssignedTo: gtk...@li...
        ReportedBy: sla...@sa...
         QAContact: gtk...@li...
     GNOME version: ---


Hi,

I don't know if this problem is in Glib bindings or Gtk3 or something else,
however the bug is caused directly by a function from Glib, let me try here
(also I don't see Gtk3 component under gnome-perl).

I make a little app with Perl, using Gtk3 and I get "random" memory corruption.
While I was trying to debug it, I found this helpful way: ran it with
G_SLICE=debug-blocks and the script aborts with such message:

GSlice: MemChecker: attempt to release non-allocated block: 0x<address> size=16

which looks like a bug. Please see a minimal script that can be used to
reproduce the issue (100% reproducible on my system). It also contains C code
doing similar and the latter works without problem.

Thanks!

glib (library) 2.32.1
Perl 5.12.4
Glib 1.260 and 1.261
Cairo::Gobject 1.001
Glib::Object::Introspection 0.009 and 0.010
Gtk3 0.006 and 0.007

Glib-1.261/GBoxed.xs - function default_boxed_destroy: I removed the "NOISY"
thing to get the additional message here and got:

$  G_SLICE=debug-blocks perl test.pl
default_boxed_destroy wrapper 0x9467ed0 --- GtkTreeIter 0x946a460
GSlice: MemChecker: attempt to release non-allocated block: 0x946a460 size=16

also, a backstrace with that test.pl:
G_SLICE=debug-blocks gdb perl

Using host libthread_db library "/lib/libthread_db.so.1".
GSlice: MemChecker: attempt to release non-allocated block: 0x889bab8 size=16

Program received signal SIGABRT, Aborted.
0xb7fde430 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7fde430 in __kernel_vsyscall ()
#1  0xb7cffcef in raise () from /lib/libc.so.6
#2  0xb7d01575 in abort () from /lib/libc.so.6
#3  0xb72e6d8a in g_slice_free1 () from /usr/lib/../lib/libglib-2.0.so.0
#4  0xb6d15cd7 in gtk_tree_iter_free () from /usr/lib/libgtk-3.so.0
#5  0xb73dae81 in _g_type_boxed_free () from
/usr/lib/../lib/libgobject-2.0.so.0
#6  0xb73b5134 in g_boxed_free () from /usr/lib/../lib/libgobject-2.0.so.0
#7  0xb741df44 in default_boxed_destroy ()
   from
/usr/lib/perl5/vendor_perl/5.12.4/i686-linux-thread-multi/auto/Glib/Glib.so
#8  0xb741de18 in XS_Glib__Boxed_DESTROY ()
   from
/usr/lib/perl5/vendor_perl/5.12.4/i686-linux-thread-multi/auto/Glib/Glib.so
#9  0xb7ef4538 in Perl_pp_entersub () from /usr/lib/libperl.so.5.12
#10 0xb7e895a6 in Perl_call_sv () from /usr/lib/libperl.so.5.12
#11 0xb7efa25d in Perl_sv_clear () from /usr/lib/libperl.so.5.12
#12 0xb7efaa8a in Perl_sv_free2 () from /usr/lib/libperl.so.5.12
#13 0xb7f20e44 in Perl_free_tmps () from /usr/lib/libperl.so.5.12
#14 0xb7eec270 in Perl_pp_unstack () from /usr/lib/libperl.so.5.12
#15 0xb7eeb342 in Perl_runops_standard () from /usr/lib/libperl.so.5.12
#16 0xb7e8f9ae in perl_run () from /usr/lib/libperl.so.5.12
#17 0x08048d12 in main ()
(gdb)

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