[Bug c++/81668] LTO ODR warnings are not helpful

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81668

--- Comment #10 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Problem is that we do not have location info that would say us the origin.
I have sent patch to add location info into TRANSLATION_UNIT_DECL some time ago
(at least a year) but I do not think it was approved.