Compilation fails, "changing the meaning of aligned_storage_t"

[thmxv]

The following code does not compile on my system because it is "changing the meaning of aligned_storage_t"

using aligned_storage_t
    = aligned_storage_t<sizeof(remove_const_t<T>),
                                      alignof(remove_const_t<T>)>;
using data_t = conditional_t<!Const<T>, aligned_storage_t,
                                              const aligned_storage_t>;

Changing it to the following code fixes the issue for me

using aligned_storage_t_
    = aligned_storage_t<sizeof(remove_const_t<T>),
                                      alignof(remove_const_t<T>)>;
using data_t = conditional_t<!Const<T>, aligned_storage_t_,
                                              const aligned_storage_t_>;