1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/resolve/issue-21221-3.rs b/tests/ui/resolve/issue-21221-3.rs
new file mode 100644
index 00000000000..f0c0a9fd61a
--- /dev/null
+++ b/tests/ui/resolve/issue-21221-3.rs
@@ -0,0 +1,19 @@
+// testing whether the lookup mechanism picks up types
+// defined in the outside crate
+
+// aux-build:issue-21221-3.rs
+
+extern crate issue_21221_3;
+
+struct Foo;
+
+// NOTE: This shows only traits accessible from the current
+// crate, thus the two private entities:
+//   `issue_21221_3::outer::private_module::OuterTrait` and
+//   `issue_21221_3::outer::public_module::OuterTrait`
+// are hidden from the view.
+impl OuterTrait for Foo {}
+//~^ ERROR cannot find trait `OuterTrait`
+fn main() {
+    println!("Hello, world!");
+}