Add test.

src/test/run-pass-fulldeps/proc-macro/auxiliary/type_macros_example.rs

@@ -0,0 +1,23 @@
+// 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.
+
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(Example)]
+pub fn example(input: TokenStream) -> TokenStream {
+    assert!(input.to_string().contains("i32"));
+    "".parse().unwrap()
+}

src/test/run-pass-fulldeps/proc-macro/type_macros.rs

@@ -0,0 +1,26 @@
+// 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.
+
+// aux-build:type_macros_example.rs
+
+#![feature(proc_macro)]
+
+extern crate type_macros_example;
+
+use type_macros_example::Example;
+
+macro_rules! m { () => { i32 } }
+
+#[derive(Example)]
+struct S {
+    x: m!(),
+}
+
+fn main() {}