https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106713
--- Comment #2 from Arsen Arsenović <arsen at aarsen dot me> --- Created attachment 53491 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53491&action=edit Reduced test case Alright, managed to get a reduced test case out of C-Vise. Though, this doesn't build on clang (since the std:: namespace also got reduced; this can be recovered by replacing the first one with <atomic> and the second one with <coroutine> and fixing a deduction failure that happens on it)