1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/compile-fail-migration/unsized-trait-impl-trait-arg.rs b/src/test/ui/compile-fail-migration/unsized-trait-impl-trait-arg.rs
new file mode 100644
index 00000000000..875a52e11c0
--- /dev/null
+++ b/src/test/ui/compile-fail-migration/unsized-trait-impl-trait-arg.rs
@@ -0,0 +1,22 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Test sized-ness checking in substitution in impls.
+
+// impl - unbounded
+trait T2<Z> {
+    fn foo(&self, z: Z);
+}
+struct S4<Y: ?Sized>(Box<Y>);
+impl<X: ?Sized> T2<X> for S4<X> {
+    //~^ ERROR the size for values of type
+}
+
+fn main() { }