inkscape-filterpatch: malloc.c:2368: sysmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 *(sizeof(size_t))) - 1)) & ~((2 *(sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long) old_end & pagemask) == 0)' failed.

Program received signal SIGABRT, Aborted.
0xb7fdacac in __kernel_vsyscall ()
(gdb) bt
#0  0xb7fdacac in __kernel_vsyscall ()
#1  0xb6184f17 in raise () from /usr/lib/libc.so.6
#2  0xb6186559 in abort () from /usr/lib/libc.so.6
#3  0xb61ca3d1 in __malloc_assert () from /usr/lib/libc.so.6
#4  0xb61ccdfe in _int_malloc () from /usr/lib/libc.so.6
#5  0xb61cdf11 in malloc () from /usr/lib/libc.so.6
#6  0xb663e204 in g_malloc () from /usr/lib/libglib-2.0.so.0
#7  0xb663e49c in g_malloc_n () from /usr/lib/libglib-2.0.so.0
#8  0xb666b9ee in ?? () from /usr/lib/libglib-2.0.so.0
#9  0xb666abbf in g_utf8_collate () from /usr/lib/libglib-2.0.so.0
#10 0xb73b9bee in Glib::ustring::compare(char const*) const ()
   from /usr/lib/libglibmm-2.4.so.1
#11 0x08190579 in SPIPaint::reset(bool) ()
#12 0x0818c29f in SPIPaint::clear() ()
#13 0x081886ed in SPStyle::SPStyle(SPDocument*, SPObject*) ()
#14 0x08157a69 in SPObject::SPObject() ()
#15 0x0828fe5e in SPFeDistantLight::SPFeDistantLight() ()
#16 0x081161a0 in SPFactory::createObject(std::string const&) ()
#17 0x0815ac05 in SPObject::build(SPDocument*, Inkscape::XML::Node*) ()
#18 0x08292ae6 in SPFeSpecularLighting::build(SPDocument*, Inkscape::XML::Node*) ()
#19 0x08158384 in SPObject::invoke_build(SPDocument*, Inkscape::XML::Node*, unsigned int) ()
---Type <return> to continue, or q <return> to quit---
#20 0x0815abcc in SPObject::build(SPDocument*, Inkscape::XML::Node*) ()
#21 0x0811724a in SPFilter::build(SPDocument*, Inkscape::XML::Node*) ()
#22 0x08158384 in SPObject::invoke_build(SPDocument*, Inkscape::XML::Node*, unsigned int) ()
#23 0x0815ad1c in SPObject::child_added(Inkscape::XML::Node*, Inkscape::XML::Node*) ()
#24 0x0870ccac in Inkscape::XML::CompositeNodeObserver::notifyChildAdded(Inkscape::XML::Node&, Inkscape::XML::Node&, Inkscape::XML::Node*) ()
#25 0x0839f287 in Inkscape::XML::SimpleNode::addChild(Inkscape::XML::Node*, Inkscape::XML::Node*) ()
#26 0x08394ac1 in Inkscape::XML::SimpleNode::appendChild(Inkscape::XML::Node*)
    ()
#27 0x0825c2a1 in Inkscape::Extension::Internal::Filter::Filter::effect(Inkscape::Extension::Effect*, Inkscape::UI::View::View*, Inkscape::Extension::Implementation::ImplementationDocumentCache*) ()
#28 0x0869c6ce in Inkscape::Extension::ExecutionEnv::run() ()
#29 0x08208fdc in Inkscape::Extension::Effect::effect(Inkscape::UI::View::View*) ()
#30 0x08209157 in Inkscape::Extension::Effect::prefs(Inkscape::UI::View::View*)
    ()
#31 0x081aa2f0 in sigc::internal::slot_call0<sigc::bind_functor<-1, sigc::bind_functor<-1, sigc::pointer_functor2<SPAction*, void*, void>, void*, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, SPAction*, sigc::nil, sigc:---Type <return> to continue, or q <return> to quit---
:nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void>::call_it(sigc::internal::slot_rep*) ()
#32 0x08294eaa in sp_action_perform(SPAction*, void*) ()
#33 0xb672847c in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#34 0xb672685b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#35 0xb6738745 in ?? () from /usr/lib/libgobject-2.0.so.0
#36 0xb6740e26 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#37 0xb6740fa5 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#38 0xb79086dd in gtk_widget_activate () from /usr/lib/libgtk-x11-2.0.so.0
#39 0xb77fcd9f in gtk_menu_shell_activate_item ()
   from /usr/lib/libgtk-x11-2.0.so.0
#40 0xb77fd1df in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#41 0xb77f2022 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#42 0xb77e9dcc in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#43 0xb67253b4 in ?? () from /usr/lib/libgobject-2.0.so.0
#44 0xb672685b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#45 0xb6738641 in ?? () from /usr/lib/libgobject-2.0.so.0
#46 0xb6740932 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#47 0xb6740fa5 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#48 0xb7909b1c in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#49 0xb77e8169 in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#50 0xb77e867d in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#51 0xb765d659 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#52 0xb66388e4 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#53 0xb6638c09 in ?? () from /usr/lib/libglib-2.0.so.0
#54 0xb6638fb9 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#55 0xb77e7355 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#56 0xb7e29c64 in Gtk::Main::run_impl() () from /usr/lib/libgtkmm-2.4.so.1
#57 0xb7e2a39f in Gtk::Main::run() () from /usr/lib/libgtkmm-2.4.so.1
#58 0x080a685e in sp_main_gui(int, char const**) ()
#59 0x0808c99a in main ()