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# Error code E0589

The value of `N` that was specified for `repr(align(N))` was not a power of two, or was greater than 2^29.

Erroneous code example:

    #![allow(unused)]
    fn main() {
    #[repr(align(15))] // error: invalid `repr(align)` attribute: not a power of two
    enum Foo {
        Bar(u64),
    }
    }