1 files changed, 44 insertions, 0 deletions
diff --git a/src/test/ui/self-impl.rs b/src/test/ui/self-impl.rs
new file mode 100644
index 00000000000..860e69fcaec
--- /dev/null
+++ b/src/test/ui/self-impl.rs
@@ -0,0 +1,44 @@
+// 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.
+
+// Test that unsupported uses of `Self` in impls don't crash
+
+struct Bar;
+
+trait Foo {
+    type Baz;
+}
+
+trait SuperFoo {
+    type SuperBaz;
+}
+
+impl Foo for Bar {
+    type Baz = bool;
+}
+
+impl SuperFoo for Bar {
+    type SuperBaz = bool;
+}
+
+impl Bar {
+    fn f() {
+        let _: <Self>::Baz = true;
+        //~^ ERROR ambiguous associated type
+        //~| NOTE ambiguous associated type
+        //~| NOTE specify the type using the syntax `<Bar as Trait>::Baz`
+        let _: Self::Baz = true;
+        //~^ ERROR ambiguous associated type
+        //~| NOTE ambiguous associated type
+        //~| NOTE specify the type using the syntax `<Bar as Trait>::Baz`
+    }
+}
+
+fn main() {}