//@ known-bug: #114663 //@ edition:2021 #![feature(generic_const_exprs)] use core::fmt::Debug; struct Inline<T> where [u8; ::core::mem::size_of::<T>() + 1]:, { _phantom: PhantomData<T>, } fn main() { let dst = Inline::<dyn Debug>::new(0); // BANG! }