https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109556
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #9 from Patrick Palka <ppalka at gcc dot gnu.org> --- Fixed for GCC 13.1, thanks for the bug report. FWIW a potential workaround for this bug, which seems to work for me at least, is to remove the Magnitude constraint from to_prefix_base and to_base_scaled_unit.