https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104859
--- Comment #1 from seurer at gcc dot gnu.org --- Looks like this is BE only. And the bisect points here: commit e32869a17b788bee9ca782b174a546b1db17b5ea Author: Patrick Palka <ppa...@redhat.com> Date: Wed Mar 9 08:42:32 2022 -0500 c++: detecting copy-init context during CTAD [PR102137]