regression test for rust-lang#38160

Author: venkatagiri

src/test/compile-fail/issue-38160.rs

@@ -0,0 +1,31 @@
+// Copyright 2017 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(associated_consts, rustc_attrs)]
+#![allow(warnings)]
+
+trait MyTrait {
+    const MY_CONST: &'static str;
+}
+
+macro_rules! my_macro {
+    () => {
+        struct MyStruct;
+
+        impl MyTrait for MyStruct {
+            const MY_CONST: &'static str = stringify!(abc);
+        }
+    }
+}
+
+my_macro!();
+
+#[rustc_error]
+fn main() {} //~ ERROR compilation successful