1 files changed, 28 insertions, 0 deletions
diff --git a/tests/ui/object-lifetime/object-lifetime-default-dyn-binding-static.rs b/tests/ui/object-lifetime/object-lifetime-default-dyn-binding-static.rs
new file mode 100644
index 000000000..339f3356b
--- /dev/null
+++ b/tests/ui/object-lifetime/object-lifetime-default-dyn-binding-static.rs
@@ -0,0 +1,28 @@
+// Test that `dyn Bar<Item = XX>` uses `'static` as the default object
+// lifetime bound for the type `XX`.
+//
+// check-pass
+
+trait Foo {
+    type Item: ?Sized;
+
+    fn item(&self) -> Box<Self::Item> { panic!() }
+}
+
+trait Bar { }
+
+impl<T> Foo for T {
+    type Item = dyn Bar;
+}
+
+fn is_static<T>(_: T) where T: 'static { }
+
+// Here, we default to `dyn Bar + 'static`, and not `&'x dyn Foo<Item
+// = dyn Bar + 'x>`.
+fn bar(x: &str) -> &dyn Foo<Item = dyn Bar> { &() }
+
+fn main() {
+    let s = format!("foo");
+    let r = bar(&s);
+    is_static(r.item());
+}