1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/specialization/defaultimpl/specialization-trait-not-implemented.rs b/tests/ui/specialization/defaultimpl/specialization-trait-not-implemented.rs
new file mode 100644
index 00000000000..6834d573629
--- /dev/null
+++ b/tests/ui/specialization/defaultimpl/specialization-trait-not-implemented.rs
@@ -0,0 +1,24 @@
+// Tests that:
+// - default impls do not have to supply all items and
+// - a default impl does not count as an impl (in this case, an incomplete default impl).
+
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+trait Foo {
+    fn foo_one(&self) -> &'static str;
+    fn foo_two(&self) -> &'static str;
+}
+
+struct MyStruct;
+
+default impl<T> Foo for T {
+    fn foo_one(&self) -> &'static str {
+        "generic"
+    }
+}
+
+
+fn main() {
+    println!("{}", MyStruct.foo_one());
+    //~^ ERROR the method
+}