https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118369
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Looks like they changed how they handle mutli-lib with respect to multi-arch. Before they required you to install the multiarch i386-linux-gnu too. Now it seems like 32bit is multilibed in with the x86_64-linux-gnu. BUT x32 is still multi-arch. I would raise this issue with debian really because they made some changes which are break how multiarch work.
