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-rw-r--r--src/test/run-pass/specialization/defaultimpl/projection.rs49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/run-pass/specialization/defaultimpl/projection.rs b/src/test/run-pass/specialization/defaultimpl/projection.rs
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+// 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(specialization)]
+
+// Make sure we *can* project non-defaulted associated types
+// cf compile-fail/specialization-default-projection.rs
+
+// First, do so without any use of specialization
+
+trait Foo {
+    type Assoc;
+}
+
+impl<T> Foo for T {
+    type Assoc = ();
+}
+
+fn generic_foo<T>() -> <T as Foo>::Assoc {
+    ()
+}
+
+// Next, allow for one layer of specialization
+
+trait Bar {
+    type Assoc;
+}
+
+default impl<T> Bar for T {
+    type Assoc = ();
+}
+
+impl<T: Clone> Bar for T {
+    type Assoc = u8;
+}
+
+fn generic_bar_clone<T: Clone>() -> <T as Bar>::Assoc {
+    0u8
+}
+
+fn main() {
+}