Thread 1 "cppunittester" received signal SIGABRT, Aborted.
0x00007ffff6e94120 in raise () from /lib64/libc.so.6
(gdb) up
#1  0x00007ffff6e95701 in abort () from /lib64/libc.so.6
(gdb)
#2  0x00007ffff6e8c73a in __assert_fail_base () from /lib64/libc.so.6
(gdb)
#3  0x00007ffff6e8c7b2 in __assert_fail () from /lib64/libc.so.6
(gdb)
#4  0x00007ffff2010f40 in vcl::Window::SetLOKNotifier (this=0x1d45380, pNotifier=0x0, bParent=false) at /home/vmiklos/git/libreoffice/master/vcl/source/window/window.cxx:3171
3171        assert(pNotifier);
(gdb)
#5  0x00007ffff1ea68b3 in Dialog::ImplStartExecute (this=0x1d45380) at /home/vmiklos/git/libreoffice/master/vcl/source/window/dialog.cxx:912
912                 SetLOKNotifier(mpDialogImpl->m_aInstallLOKNotifierHdl.Call(nullptr));
(gdb)
#6  0x00007ffff1ea7523 in Dialog::Execute (this=0x1d45380) at /home/vmiklos/git/libreoffice/master/vcl/source/window/dialog.cxx:1071
1071        if ( !ImplStartExecute() )
(gdb)
#7  0x00007ffff2580eab in SalInstanceDialog::run (this=0x1ca9750) at /home/vmiklos/git/libreoffice/master/vcl/source/app/salvtables.cxx:1282
1282            return m_xDialog->Execute();
(gdb)
#8  0x00007fffe0e9ad39 in oox::ppt::PowerPointImport::importDocument (this=0x184a970) at /home/vmiklos/git/libreoffice/master/oox/source/ppt/pptimport.cxx:165
165             xWarn->run();