1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/specialization/specialization-overlap.rs b/src/test/ui/specialization/specialization-overlap.rs
new file mode 100644
index 000000000..6bee22ceb
--- /dev/null
+++ b/src/test/ui/specialization/specialization-overlap.rs
@@ -0,0 +1,19 @@
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+trait Foo { fn foo() {} }
+impl<T: Clone> Foo for T {}
+impl<T> Foo for Vec<T> {} //~ ERROR E0119
+
+trait Bar { fn bar() {} }
+impl<T> Bar for (T, u8) {}
+impl<T> Bar for (u8, T) {} //~ ERROR E0119
+
+trait Baz<U> { fn baz() {} }
+impl<T> Baz<T> for u8 {}
+impl<T> Baz<u8> for T {} //~ ERROR E0119
+
+trait Qux { fn qux() {} }
+impl<T: Clone> Qux for T {}
+impl<T: Eq> Qux for T {} //~ ERROR E0119
+
+fn main() {}