1 files changed, 24 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-35976.rs b/tests/ui/issues/issue-35976.rs
new file mode 100644
index 000000000..aa6f74cb5
--- /dev/null
+++ b/tests/ui/issues/issue-35976.rs
@@ -0,0 +1,24 @@
+// revisions: imported unimported
+//[imported] check-pass
+
+mod private {
+    pub trait Future {
+        //[unimported]~^^ HELP perhaps add a `use` for it
+        fn wait(&self) where Self: Sized;
+    }
+
+    impl Future for Box<dyn Future> {
+        fn wait(&self) { }
+    }
+}
+
+#[cfg(imported)]
+use private::Future;
+
+fn bar(arg: Box<dyn private::Future>) {
+    // Importing the trait means that we don't autoderef `Box<dyn Future>`
+    arg.wait();
+    //[unimported]~^ ERROR the `wait` method cannot be invoked on a trait object
+}
+
+fn main() {}