Add regression test

Author: jseyfried

src/test/compile-fail/issue-34418.rs

@@ -0,0 +1,31 @@
+// 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)]
+#![allow(unused)]
+
+macro_rules! make_item {
+    () => { fn f() {} }
+}
+
+macro_rules! make_stmt {
+    () => { let x = 0; }
+}
+
+fn f() {
+    make_item! {}
+}
+
+fn g() {
+    make_stmt! {}
+}
+
+#[rustc_error]
+fn main() {} //~ ERROR compilation successful