diff --git a/src/test/compile-fail/for-loop-unconstrained-element-type.rs b/src/test/compile-fail/for-loop-unconstrained-element-type.rs
new file mode 100644
index 000000000000..f7dccc7f2ac1
--- /dev/null
+++ b/src/test/compile-fail/for-loop-unconstrained-element-type.rs
@@ -0,0 +1,13 @@
+// Copyright 2017 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.
+
+fn main() {
+    for i in Vec::new() { } //~ ERROR type annotations needed
+}
diff --git a/src/test/run-pass/for-loop-lifetime-of-unbound-values.rs b/src/test/run-pass/for-loop-lifetime-of-unbound-values.rs
index a0562edfadd6..4653a493898e 100644
--- a/src/test/run-pass/for-loop-lifetime-of-unbound-values.rs
+++ b/src/test/run-pass/for-loop-lifetime-of-unbound-values.rs
@@ -35,4 +35,4 @@ fn main() {
     }
     // The Flag value should be dead outside of the loop
     assert_eq!(alive.get(), false);
-}
\ No newline at end of file
+}
diff --git a/src/test/run-pass/for-loop-unconstrained-element-type-i32-fallback.rs b/src/test/run-pass/for-loop-unconstrained-element-type-i32-fallback.rs
new file mode 100644
index 000000000000..d9a876d9c952
--- /dev/null
+++ b/src/test/run-pass/for-loop-unconstrained-element-type-i32-fallback.rs
@@ -0,0 +1,16 @@
+// Copyright 2017 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.
+
+fn main() {
+    let mut sum = 0;
+    for i in Vec::new() {
+        sum += i;
+    }
+}