Comment 10 for bug 1841919

OK, I see the error in oldstable

(gdb) bt
#0 0x00007fffd0f242c6 in EDA_ITEM::Type (this=0x0) at ../../include/base_struct.h:212
#1 0x00007fffd11c969c in EE_SELECTION_TOOL::selectMultiple (this=0x5555585656e0)
    at /home/seth/code/kicad/kicad-launchpad/eeschema/tools/ee_selection_tool.cpp:701
#2 0x00007fffd11c7e7e in EE_SELECTION_TOOL::Main (this=0x5555585656e0, aEvent=...)
    at /home/seth/code/kicad/kicad-launchpad/eeschema/tools/ee_selection_tool.cpp:347
#3 0x00007fffd11d2bb0 in std::__invoke_impl<int, int (EE_SELECTION_TOOL::* const&)(TOOL_EVENT const&), EE_SELECTION_TOOL*&, TOOL_EVENT const&> (__f=
    @0x5555586675b0: (int (EE_SELECTION_TOOL::*)(EE_SELECTION_TOOL * const, const TOOL_EVENT &)) 0x7fffd11c785c <EE_SELECTION_TOOL::Main(TOOL_EVENT const&)>, __t=@0x5555586675c0: 0x5555585656e0, __args#0=...) at /usr/include/c++/6/functional:227
#4 0x00007fffd11d2971 in std::__invoke<int (EE_SELECTION_TOOL::* const&)(TOOL_EVENT const&), EE_SELECTION_TOOL*&, TOOL_EVENT const&> (
    __fn=
    @0x5555586675b0: (int (EE_SELECTION_TOOL::*)(EE_SELECTION_TOOL * const, const TOOL_EVENT &)) 0x7fffd11c785c <EE_SELECTION_TOOL::Main(TOOL_EVENT const&)>, __args#0=@0x5555586675c0: 0x5555585656e0, __args#1=...) at /usr/include/c++/6/functional:251
#5 0x00007fffd11d264b in std::_Mem_fn_base<int (EE_SELECTION_TOOL::*)(TOOL_EVENT const&), true>::operator()<EE_SELECTION_TOOL*&, TOOL_EVENT const&> (this=0x5555586675b0, __args#0=@0x5555586675c0: 0x5555585656e0, __args#1=...) at /usr/include/c++/6/functional:604
#6 0x00007fffd11d1dd7 in std::_Bind<std::_Mem_fn<int (EE_SELECTION_TOOL::*)(TOOL_EVENT const&)> (EE_SELECTION_TOOL*, std::_Placeholder<1>)>::__call<int, TOOL_EVENT const&, 0ul, 1ul>(std::tuple<TOOL_EVENT const&>&&, std::_Index_tuple<0ul, 1ul>) (this=0x5555586675b0,
    __args=<unknown type in /usr/local/bin/_eeschema.kiface, CU 0x2ba37b4, DIE 0x2bf928c>) at /usr/include/c++/6/functional:934
#7 0x00007fffd11d1131 in std::_Bind<std::_Mem_fn<int (EE_SELECTION_TOOL::*)(TOOL_EVENT const&)> (EE_SELECTION_TOOL*, std::_Placeholder<1>)>::operator()<TOOL_EVENT const&, int>(TOOL_EVENT const&) (this=0x5555586675b0, __args#0=...) at /usr/include/c++/6/functional:993
#8 0x00007fffd11d08ea in std::_Function_handler<int (TOOL_EVENT const&), std::_Bind<std::_Mem_fn<int (EE_SELECTION_TOOL::*)(TOOL_EVENT const&)> (EE_SELECTION_TOOL*, std::_Placeholder<1>)> >::_M_invoke(std::_Any_data const&, TOOL_EVENT const&) (__functor=...,
    __args#0=...) at /usr/include/c++/6/functional:1717
#9 0x00007fffd13da66b in std::function<int (TOOL_EVENT const&)>::operator()(TOOL_EVENT const&) const (this=0x5555572f1e40,
    __args#0=...) at /usr/include/c++/6/functional:2127
#10 0x00007fffd13d784b in COROUTINE<int, TOOL_EVENT const&>::callerStub (aData=93825007244256) at ../../include/tool/coroutine.h:350
#11 0x0000555555706dc1 in make_fcontext () at /usr/include/wx-3.0/wx/wxcrtbase.h:675
#12 0x0000000000000000 in ?? ()