https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99898
--- Comment #5 from Jan Hubicka <hubicka at ucw dot cz> --- > The LTO minor saw a bump around Sep 10 last year already so the object files > must be younger or LTO should complain. > > I'm not aware of any specific change where we forgot the bumping but there > were > a lot of changes and since we did already bump bumping again shouldn't cause > any harm. Still I'd like to be sure we're not seeing a genuine streaming bug > here. I only reacall backporting the streaming fixes early in gcc10 timeframe (August) that was reason for the September bump. Didn't we backport some new command line options/params breaking streaming of optimization nodes as usual? honza