1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/unsized/unsized-trait-impl-self-type.rs b/src/test/ui/unsized/unsized-trait-impl-self-type.rs
new file mode 100644
index 000000000..df571a833
--- /dev/null
+++ b/src/test/ui/unsized/unsized-trait-impl-self-type.rs
@@ -0,0 +1,14 @@
+// Test sized-ness checking in substitution in impls.
+
+// impl - struct
+trait T3<Z: ?Sized> {
+    fn foo(&self, z: &Z);
+}
+
+struct S5<Y>(Y);
+
+impl<X: ?Sized> T3<X> for S5<X> {
+    //~^ ERROR the size for values of type
+}
+
+fn main() { }