I'm getting crashes if I expand a register which the debugger cannot access.
#0 0x00007ffff442dd94 in wxPGChoicesData::Item (this=0x0, i=0) at ../git/include/wx/propgrid/property.h:673
#1 0x00007ffff442deae in wxPGChoices::Item (this=this@entry=0x61600172bdb8, i=i@entry=0) at ../git/include/wx/propgrid/property.h:887
#2 0x00007ffff442aaef in wxPGChoices::operator[] (i=0, this=0x61600172bdb8) at ../git/include/wx/propgrid/property.h:950
#3 wxPGProperty::GetDisplayInfo (this=this@entry=0x61600172bc80, column=column@entry=1, choiceIndex=choiceIndex@entry=0, flags=flags@entry=0, pString=pString@entry=0x7fffffffc580, pCell=pCell@entry=0x7fffffffc500) at ../git/src/propgrid/property.cpp:839
#4 0x00007ffff442b274 in wxPGDefaultRenderer::Render (this=0x602000057230, dc=..., rect=..., propertyGrid=0x61c000042880, property=0x61600172bc80, column=1, item=-1, flags=0) at ../git/src/propgrid/property.cpp:256
#5 0x00007ffff4444cf6 in wxPropertyGrid::DoDrawItemsBase (this=this@entry=0x61c000042880, dc=..., itemsRect=itemsRect@entry=0x7fffffffcac0, isBuffered=isBuffered@entry=true) at ../git/src/propgrid/propgrid.cpp:2488
#6 0x00007ffff44453d3 in wxPropertyGrid::DoDrawItems (itemsRect=0x7fffffffcac0, dc=..., this=0x61c000042880) at ../git/include/wx/propgrid/propgrid.h:1824
#7 wxPropertyGrid::DrawItems (this=this@entry=0x61c000042880, dc=..., topItemY=<optimized out>, bottomItemY=<optimized out>, itemsRect=itemsRect@entry=0x7fffffffcac0) at ../git/src/propgrid/propgrid.cpp:1999
#8 0x00007ffff44459a0 in wxPropertyGrid::OnPaint (this=0x61c000042880) at ../git/src/propgrid/propgrid.cpp:1879
#9 0x00007ffff28199f6 in wxAppConsoleBase::HandleEvent (this=<optimized out>, handler=<optimized out>, func=<optimized out>, event=...) at ../git/src/common/appbase.cpp:657
#10 0x00007ffff2819a3a in wxAppConsoleBase::CallEventHandler (this=0x61a00001e680, handler=0x61c000042880, functor=..., event=...) at ../git/src/common/appbase.cpp:669
#11 0x00007ffff29b5e63 in wxEvtHandler::ProcessEventIfMatchesId (entry=..., handler=handler@entry=0x61c000042880, event=...) at ../git/src/common/event.cpp:1396
#12 0x00007ffff29b814f in wxEventHashTable::HandleEvent (this=<optimized out>, event=..., self=self@entry=0x61c000042880) at ../git/src/common/event.cpp:1004
#13 0x00007ffff29b81fa in wxEvtHandler::TryHereOnly (this=this@entry=0x61c000042880, event=...) at ../git/src/common/event.cpp:1593
#14 0x00007ffff29b8266 in wxEvtHandler::TryBeforeAndHere (event=..., this=0x61c000042880) at ../git/include/wx/event.h:3892
#15 wxEvtHandler::ProcessEventLocally (this=this@entry=0x61c000042880, event=...) at ../git/src/common/event.cpp:1526
#16 0x00007ffff29b832f in wxEvtHandler::ProcessEvent (this=0x61c000042880, event=...) at ../git/src/common/event.cpp:1499
#17 0x00007ffff369f425 in wxScrollHelperEvtHandler::ProcessEvent (this=0x608000579ca0, event=...) at ../git/src/generic/scrlwing.cpp:200
#18 0x00007ffff29b84d1 in wxEvtHandler::SafelyProcessEvent (this=<optimized out>, event=...) at ../git/src/common/event.cpp:1617
#19 0x00007ffff36273e6 in wxWindowBase::HandleWindowEvent (this=this@entry=0x61c000042880, event=...) at ../git/src/common/wincmn.cpp:1539
#20 0x00007ffff33f6145 in wxWindow::GTKSendPaintEvents (this=this@entry=0x61c000042880, region=<optimized out>) at ../git/src/gtk/window.cpp:5184
#21 0x00007ffff33f63b5 in expose_event (gdk_event=0x7fffffffd380, win=0x61c000042880) at ../git/src/gtk/window.cpp:432
#22 0x00007ffff6933b46 in _gtk_marshal_BOOLEAN__BOXED (closure=0x6070006c1580, return_value=0x7fffffffcfb0, n_param_values=<optimized out>, param_values=0x7fffffffd010, invocation_hint=<optimized out>, marshal_data=<optimized out>) at gtkmarshalers.c:84
#23 0x00007ffff517a325 in g_closure_invoke () from /usr/lib64/libgobject-2.0.so.0
#24 0x00007ffff518cc62 in ?? () from /usr/lib64/libgobject-2.0.so.0
#25 0x00007ffff51951d7 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0
#26 0x00007ffff5195b1f in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#27 0x00007ffff6a5439c in gtk_widget_event_internal (widget=widget@entry=0x621000c35b40, event=event@entry=0x7fffffffd380) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gtk/gtkwidget.c:5010
#28 0x00007ffff6a5474f in IA__gtk_widget_send_expose (widget=widget@entry=0x621000c35b40, event=event@entry=0x7fffffffd380) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gtk/gtkwidget.c:4839
#29 0x00007ffff69328a2 in IA__gtk_main_do_event (event=0x7fffffffd380) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gtk/gtkmain.c:1623
#30 0x00007ffff658b3c2 in _gdk_window_process_updates_recurse (window=window@entry=0x6250007976c0, expose_region=expose_region@entry=0x6190004aad60) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5479
#31 0x00007ffff658b365 in _gdk_window_process_updates_recurse (window=window@entry=0x62500079a000, expose_region=expose_region@entry=0x6190004b9d50) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5452
#32 0x00007ffff658b365 in _gdk_window_process_updates_recurse (window=window@entry=0x625000797ea0, expose_region=expose_region@entry=0x6190004cb0d0) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5452
#33 0x00007ffff658b365 in _gdk_window_process_updates_recurse (window=window@entry=0x6250004efd80, expose_region=expose_region@entry=0x61900047ab80) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5452
#34 0x00007ffff658b365 in _gdk_window_process_updates_recurse (window=window@entry=0x6250004ef120, expose_region=expose_region@entry=0x6190004d5090) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5452
#35 0x00007ffff65bbcda in _gdk_windowing_window_process_updates_recurse (window=window@entry=0x6250004ef120, region=region@entry=0x6190004d5090) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/x11/gdkwindow-x11.c:5643
#36 0x00007ffff6587d02 in gdk_window_process_updates_internal (window=0x6250004ef120) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5646
#37 0x00007ffff6588658 in IA__gdk_window_process_all_updates () at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5752
#38 0x00007ffff65886b9 in gdk_window_update_idle (data=<optimized out>) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdkwindow.c:5372
#39 0x00007ffff6566499 in gdk_threads_dispatch (data=0x6190004cbb00) at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gdk/gdk.c:534
#40 0x00007ffff4e9a45a in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#41 0x00007ffff4e9a818 in ?? () from /usr/lib64/libglib-2.0.so.0
#42 0x00007ffff4e9ab42 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#43 0x00007ffff6931612 in IA__gtk_main () at /var/tmp/portage/x11-libs/gtk+-2.24.32-r1/work/gtk+-2.24.32/gtk/gtkmain.c:1270
#44 0x00007ffff33c0633 in wxGUIEventLoop::DoRun (this=0x606000c01e20) at ../git/src/gtk/evtloop.cpp:64
#45 0x00007ffff285bfbe in wxEventLoopBase::Run (this=0x606000c01e20) at ../git/src/common/evtloopcmn.cpp:90
#46 0x00007ffff281df1e in wxAppConsoleBase::MainLoop (this=0x61a00001e680) at ../git/src/common/appbase.cpp:380
#47 0x00007ffff2819907 in wxAppConsoleBase::OnRun (this=<optimized out>) at ../git/src/common/appbase.cpp:301
#48 0x00007ffff34c3180 in wxAppBase::OnRun (this=<optimized out>) at ../git/src/common/appcmn.cpp:335
#49 0x00005555556b1f75 in CodeBlocksApp::OnRun (this=0x61a00001e680) at /home/obfuscated/projects/codeblocks/git/src/src/app.cpp:870
#50 0x00007ffff28b1cd6 in wxEntry (argc=@0x7ffff2c51c30: 8, argv=<optimized out>) at ../git/src/common/init.cpp:507
#51 0x00007ffff28b29e2 in wxEntry (argc=<optimized out>, argv=<optimized out>) at ../git/src/common/init.cpp:519
#52 0x00005555556ad7d9 in main (argc=8, argv=0x7fffffffde98) at /home/obfuscated/projects/codeblocks/git/src/src/app.cpp:338
It seems that svPGBitProp::GetChoiceSelection returns an index which is out-of-bounds for this case.