https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80117
--- Comment #22 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Timo Teräs from comment #21) > This caused a regression for non-multilib builds. Now my non-multilib lp64 > build fails with: > a-cfinve.ads:245:04: warning: in instantiation at a-coboho.adb:55 > a-cfinve.ads:245:04: warning: types for unchecked conversion have different > sizes > > Probably because the logic added in this patch to Makefile.in picks up > 64-bit file only when multilib is enabled. On which branch? The logic for GCC 7 and GCC 8 are different as Makefile.in changes are not used any more. Also did you modify anything as multilib itself should be enabled anyways for aarch64 due to the use /lib64
