Added more tests

Author: Zoxc

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
+}

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);
-}
+}

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;
+    }
+}