[Bug ipa/89762] [8 Regression] Mixing optimization levels with ostream gives lto1: internal compiler error: in get_odr_type, at ipa-devirt.c:2098

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89762

--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
The patch can't be backported since it depends on the rest of type
simplification infrastructure that is GCC 9 only.  I will take a look why
registration fails - it looks like the patch above only works around the issue
anyway.

Honza