Add regression test

src/test/compile-fail/issue-32922.rs

@@ -0,0 +1,20 @@
+// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(rustc_attrs)]
+
+macro_rules! foo { () => {
+    let x = 1;
+    macro_rules! bar { () => {x} }
+    let _ = bar!();
+}}
+
+#[rustc_error]
+fn main() { foo! {}; } //~ ERROR compilation successful