[Bug c++/58678] [4.9 Regression] pykde4-4.11.2 link error (devirtualization too trigger happy)

[nheghathivhistha at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58678

--- Comment #15 from David Kredba <nheghathivhistha at gmail dot com> ---
It is still present in rev. 207565 and pykde4-4.12.2:

CMakeFiles/python_module_PyKDE4_phonon.dir/sip/phonon/sipphononpart5.cpp.o: In
function `~Notifier':
/usr/include/phonon/backendcapabilities.h:57: undefined reference to `vtable
for Phonon::BackendCapabilities::Notifier'
/usr/include/phonon/backendcapabilities.h:57: undefined reference to `vtable
for Phonon::BackendCapabilities::Notifier'
CMakeFiles/python_module_PyKDE4_phonon.dir/sip/phonon/sipphononpart5.cpp.o: In
function `Phonon::BackendCapabilities::Notifier::~Notifier()':
/usr/include/phonon/backendcapabilities.h:57: undefined reference to `vtable
for Phonon::BackendCapabilities::Notifier'
collect2: error: ld returned 1 exit status