1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/traits/multidispatch-conditional-impl-not-considered.rs b/src/test/ui/traits/multidispatch-conditional-impl-not-considered.rs
new file mode 100644
index 000000000..f845e198a
--- /dev/null
+++ b/src/test/ui/traits/multidispatch-conditional-impl-not-considered.rs
@@ -0,0 +1,24 @@
+// run-pass
+// Test that we correctly ignore the blanket impl
+// because (in this case) `T` does not impl `Clone`.
+//
+// Issue #17594.
+
+use std::cell::RefCell;
+
+trait Foo {
+    fn foo(&self) {}
+}
+
+impl<T> Foo for T where T: Clone {}
+
+struct Bar;
+
+impl Bar {
+    fn foo(&self) {}
+}
+
+fn main() {
+    let b = RefCell::new(Bar);
+    b.borrow().foo();
+}