1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/coherence/coherence-projection-conflict-orphan.rs b/src/test/ui/coherence/coherence-projection-conflict-orphan.rs
new file mode 100644
index 000000000..637dd2506
--- /dev/null
+++ b/src/test/ui/coherence/coherence-projection-conflict-orphan.rs
@@ -0,0 +1,19 @@
+#![feature(rustc_attrs)]
+
+// Here we expect a coherence conflict because, even though `i32` does
+// not implement `Iterator`, we cannot rely on that negative reasoning
+// due to the orphan rules. Therefore, `A::Item` may yet turn out to
+// be `i32`.
+
+pub trait Foo<P> { fn foo() {} }
+
+pub trait Bar {
+    type Output: 'static;
+}
+
+impl Foo<i32> for i32 { }
+
+impl<A:Iterator> Foo<A::Item> for A { }
+//~^ ERROR E0119
+
+fn main() {}