https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66687
--- Comment #10 from Guido Haztsis <guido.hatzsis at yandex dot com> --- (In reply to Richard Biener from comment #9) > Are you sure you produced all LTO bytecode with exactly the same compiler? > Reminds me to bump the LTO bytecode version again on trunk (it's still the > same > as that on the GCC 5 branch...) Was it bumped from 4 to 5? Yes, I am pretty sure I am using the same compliler.