File: const_evaluatable_lib.rs

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#![feature(generic_const_exprs)]

pub fn test1<T>() -> [u8; std::mem::size_of::<T>() - 1]
where
    [u8; std::mem::size_of::<T>() - 1]: Sized,
{
    [0; std::mem::size_of::<T>() - 1]
}