https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123888
--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Do you have ideas how to reproduce this without all the non-LTO object files?
Or at least with r16-6809 if the gcda files are incompatible with current
trunk?
In the real reproduction, I have those 2 -flto built *.o files and thousands of
*.o files and some libraries built without -flto.
If I try just g++ -shared -O2 -flto -o libxul.small.so
Unified_cpp_netwerk_base{3,4}.o
then for some reason it doesn't LTO compile anything, and the #c3 attempt ICEd.
I can upload the *.o files somewhere if needed though if there is no other way,
just not to bugzilla because of the 2MB limit.