1 files changed, 48 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/macro-namespace-reserved.rs b/src/test/ui/proc-macro/macro-namespace-reserved.rs
new file mode 100644
index 00000000000..b0a3dbf0c1f
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+++ b/src/test/ui/proc-macro/macro-namespace-reserved.rs
@@ -0,0 +1,48 @@
+// Copyright 2018 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.
+
+// force-host
+// no-prefer-dynamic
+
+#![feature(decl_macro)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::*;
+
+#[proc_macro]
+pub fn my_macro(input: TokenStream) -> TokenStream {
+    input
+}
+
+#[proc_macro_attribute]
+pub fn my_macro_attr(input: TokenStream, _: TokenStream) -> TokenStream {
+    input
+}
+
+#[proc_macro_derive(MyTrait)]
+pub fn my_macro_derive(input: TokenStream) -> TokenStream {
+    input
+}
+
+macro my_macro() {} //~ ERROR the name `my_macro` is defined multiple times
+macro my_macro_attr() {} //~ ERROR the name `my_macro_attr` is defined multiple times
+macro MyTrait() {} //~ ERROR the name `MyTrait` is defined multiple times
+
+#[proc_macro_derive(SameName)]
+pub fn foo(input: TokenStream) -> TokenStream {
+    input
+}
+
+#[proc_macro]
+pub fn SameName(input: TokenStream) -> TokenStream {
+//~^ ERROR the name `SameName` is defined multiple times
+    input
+}