Segfault when using group feature

[Thomas]

I have a file using the connector tool and latex fonts. When I try to group, I get a segfault and the following (probably uninformative backtrace).

I attached the file I am trying this on.

OS: Kubuntu 11.04.
Inkscape 1:0.48+devel+11002+30~oneiric1

Starting program: /usr/bin/inkscape
[Thread debugging using libthread_db enabled]
[New Thread 0xb7fbcb70 (LWP 31461)]
[New Thread 0xb75ffb70 (LWP 31462)]
[New Thread 0xa8b36b70 (LWP 31464)]

Program received signal SIGSEGV, Segmentation fault.
0x086788e1 in ?? ()
(gdb) bt
#0 0x086788e1 in ?? ()
#1 0x08662bab in ?? ()
#2 0x080fabc9 in ?? ()
#3 0x081302b6 in ?? ()
#4 0x08128e53 in ?? ()
#5 0x0812ac1a in ?? ()
#6 0x081155a2 in ?? ()
#7 0x085f3d20 in ?? ()
#8 0x0835323f in ?? ()
#9 0x080d8570 in ?? ()
#10 0x080d86f1 in ?? ()
#11 0x0817c0b7 in ?? ()
#12 0x0825a869 in ?? ()
#13 0x080e788f in ?? ()
#14 0x08260a1b in ?? ()
#15 0x0065a57d in ?? () from /usr/lib/libgtkmm-2.4.so.1
#16 0x00942c52 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#17 0x01789c3c in g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#18 0x0179cbe9 in ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#19 0x017a5599 in g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#20 0x017a58f3 in g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
#21 0x00a7c553 in ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#22 0x00940f78 in gtk_propagate_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#23 0x00941240 in gtk_main_do_event () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#24 0x01421888 in ?? () from /usr/lib/i386-linux-gnu/libgdk-x11-2.0.so.0
#25 0x0180f25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x0180f990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0x0180ff9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#28 0x0093ffcf in gtk_main () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#29 0x005d1124 in Gtk::Main::run_impl() () from /usr/lib/libgtkmm-2.4.so.1
#30 0x005d1b5f in Gtk::Main::run() () from /usr/lib/libgtkmm-2.4.so.1
#31 0x0809cc6d in ?? ()
#32 0x08088fcb in ?? ()
#33 0x01a2c113 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
#34 0x0809ade1 in ?? ()

[su_v (suv-lp)]

Reproduced with Inkscape 0.48.2 and 0.48+devel r11002 on OS X 10.7.2 (64bit):

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x000000000000000c
0x0000000100f749c2 in Avoid::VertInf::removeFromGraph (this=0x0, isConnVert=true) at vertices.cpp:209
209 COLA_ASSERT(!(id.isShape));

[su_v (suv-lp)]

Reduced test case attached: drag-select the remaining objects (from two layers) and group them to reproduce the crash.

Based on the backtrace, this is a duplicate of
Bug #837631 in Inkscape: “Crashes when grouping a number of items together”
<https://bugs.launchpad.net/inkscape/+bug/837631>

[su_v (suv-lp)]

Note: stack order of layers matters when grouping objects from different layers:

Crash is triggered ff connectors (+ connected objects) are moved onto a different layer when grouping a selection of objects from different layers.

Workaround for the file 'hier_struct.svg': move the 'nodes' layer above the 'text' layer.

[su_v (suv-lp)]

Linking as duplicate to bug #837631 - please add a comment here and revert the duplicate status if you don't agree and think these are different issues.