1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/coherence/coherence-overlap-downstream-inherent.rs b/tests/ui/coherence/coherence-overlap-downstream-inherent.rs
new file mode 100644
index 00000000000..5dea33e330b
--- /dev/null
+++ b/tests/ui/coherence/coherence-overlap-downstream-inherent.rs
@@ -0,0 +1,17 @@
+// Tests that we consider `T: Sugar + Fruit` to be ambiguous, even
+// though no impls are found.
+
+struct Sweet<X>(X);
+pub trait Sugar {}
+pub trait Fruit {}
+impl<T:Sugar> Sweet<T> { fn dummy(&self) { } }
+//~^ ERROR E0592
+impl<T:Fruit> Sweet<T> { fn dummy(&self) { } }
+
+trait Bar<X> {}
+struct A<T, X>(T, X);
+impl<X, T> A<T, X> where T: Bar<X> { fn f(&self) {} }
+//~^ ERROR E0592
+impl<X> A<i32, X> { fn f(&self) {} }
+
+fn main() {}