https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107078
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Tomasz Kłoczko from comment #0) > I found that fedora spec file has disabled LTO as well with comment > > # firebird is mis-compiled when LTO is enabled. A root > # cause analysis has not yet been completed. Reported upstream. > # Disable LTO for now https://src.fedoraproject.org/rpms/firebird/c/4c04d2ce892bcf0d2e7015dbeeb6069789ed4396