ICE when initializing an array in macro expansion

[gkoz]

trait Foo { fn foo(&self); }

macro_rules! foo {
    () => ();
    ($a:expr, $($n:expr,)*) => (
        impl Foo for [(); $a] {
            fn foo(&self) {
                // Okay
                let baz: [i32; $a] = [$($n),*];
                // ICE
                let bar = [$($n),*];
            }
        }
        foo!($($n,)*);
    )
}

foo!(3, 2, 1, 0,);

fn main() {}

<anon>:11:27: 11:36 error: internal compiler error: cat_expr Errd
<anon>:11                 let bar = [$($n),*];
                                    ^~~~~~~~~

rustc 1.0.0-nightly (91bdf23f5 2015-03-09) (built 2015-03-09)

[rprichard]

let bar = []; is enough to make it ICE. This test case does not ICE if I prepend 0, to the bar initializer, so I think this issue is a duplicate of #22897.

[gkoz]

@rprichard
Indeed. I'll close this one then.