[Bug c++/69953] [5/6/7 Regression] Using lto causes gtkmm/gparted and gtkmm/inkscape compile to fail

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69953

--- Comment #27 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Created attachment 41176
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41176&action=edit
Patch I am testing

Hi,
I am testing the attached patch. This is but subtle issue, but I hope that it
works right now.  For a first time we make difference what symbols in a comdat
to privatize.  In this case we only turn the construction vtable into comdat
local and dissolve the whole comdat group incrementally.