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diff --git a/src/test/ui/marker_trait_attr/overlap-marker-trait.rs b/src/test/ui/marker_trait_attr/overlap-marker-trait.rs
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index 000000000..8794d42f4
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+++ b/src/test/ui/marker_trait_attr/overlap-marker-trait.rs
@@ -0,0 +1,28 @@
+// Test for RFC 1268: we allow overlapping impls of marker traits,
+// that is, traits with #[marker]. In this case, a type `T` is
+// `MyMarker` if it is either `Debug` or `Display`. This test just
+// checks that we don't consider **all** types to be `MyMarker`.
+
+#![feature(marker_trait_attr)]
+
+use std::fmt::{Debug, Display};
+
+#[marker] trait Marker {}
+
+impl<T: Debug> Marker for T {}
+impl<T: Display> Marker for T {}
+
+fn is_marker<T: Marker>() { }
+
+struct NotDebugOrDisplay;
+
+fn main() {
+    // Debug && Display:
+    is_marker::<i32>();
+
+    // Debug && !Display:
+    is_marker::<Vec<i32>>();
+
+    // !Debug && !Display
+    is_marker::<NotDebugOrDisplay>(); //~ ERROR
+}