Created attachment 617515 [details]
gdb backtrace

when aborting yast bootloader starting via "alt+r" (several times), following
occurs:
#0  0x00007ffff57b30f7 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007ffff57b44ca in __GI_abort () at abort.c:78
#2  0x00007ffff6099145 in __gnu_cxx::__verbose_terminate_handler () at
../../../../libstdc++-v3/libsupc++/vterminate.cc:95
#3  0x00007ffff60972e6 in __cxxabiv1::__terminate (handler=<optimized out>) at
../../../../libstdc++-v3/libsupc++/eh_terminate.cc:38
#4  0x00007ffff6097313 in std::terminate () at
../../../../libstdc++-v3/libsupc++/eh_terminate.cc:48
#5  0x00007ffff6097532 in __cxxabiv1::__cxa_throw (obj=0x7fffe4005920,
tinfo=0x7ffff445fd10 <typeinfo for YUINoDialogException>, dest=0x7ffff4228100
<YUINoDialogException::~YUINoDialogException()>) at
../../../../libstdc++-v3/libsupc++/eh_throw.cc:87
#6  0x00007ffff4228593 in _YUI_THROW<YUINoDialogException> (exception_r=...,
where_r=...) at /usr/src/debug/libyui-3.1.4/src/YUIException.h:915
#7  0x00007ffff422654f in YDialog::deleteTopmostDialog
(doThrow=doThrow@entry=true) at /usr/src/debug/libyui-3.1.4/src/YDialog.cc:550
#8  0x00007ffff449c8f9 in YCP_UI::CloseDialog () at YCP_UI.cc:615
#9  0x00007ffff4486dbb in YUINamespace::CloseDialog (this=<optimized out>) at
YUINamespace.cc:214
#10 0x00007ffff4488786 in YUIFunction::evaluateCall_int (this=0xb4c13b0) at
UIBuiltinCalls.h:53
#11 0x00007ffff44a5a5d in YCPBuiltinCaller::call (this=0x128e3d0) at
YCPBuiltinCaller.cc:39
#12 0x00007ffff41fbed1 in YUI::uiThreadMainLoop (this=0xa39830) at
/usr/src/debug/libyui-3.1.4/src/YUI.cc:377
#13 0x00007ffff41fc01e in start_ui_thread (yui=<optimized out>) at
/usr/src/debug/libyui-3.1.4/src/YUI.cc:493
#14 0x00007ffff6e163a4 in start_thread (arg=0x7fffeaf30700) at
pthread_create.c:310
#15 0x00007ffff5862a4d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
#0  0x00007ffff57b30f7 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:55