https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105841
Patrick Palka <ppalka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=102529 --- Comment #5 from Patrick Palka <ppalka at gcc dot gnu.org> --- PR102529 seems related, though not a regression. There it's a constraint (on the alias template) rather than a default template argument that messes us up.