add test for #19404

closes #19404

Author: apasel422

src/test/run-pass/issue-19404.rs

@@ -0,0 +1,47 @@
+// Copyright 2015 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(reflect_marker)]
+
+use std::any::TypeId;
+use std::marker::Reflect;
+use std::rc::Rc;
+
+type Fp<T> = Rc<T>;
+
+struct Engine;
+
+trait Component: 'static + Reflect {}
+impl Component for Engine {}
+
+trait Env {
+    fn get_component_type_id(&self, type_id: TypeId) -> Option<Fp<Component>>;
+}
+
+impl<'a> Env+'a {
+    fn get_component<T: Component>(&self) -> Option<Fp<T>> {
+        let x = self.get_component_type_id(TypeId::of::<T>());
+        None
+    }
+}
+
+trait Figment {
+    fn init(&mut self, env: &Env);
+}
+
+struct MyFigment;
+
+impl Figment for MyFigment {
+    fn init(&mut self, env: &Env) {
+        let engine = env.get_component::<Engine>();
+    }
+}
+
+fn main() {}