MalformedType used for all invalid type annotations.

tests/language/wrong_number_type_arguments_test.dart

Index: tests/language/wrong_number_type_arguments_test.dart
diff --git a/tests/language/wrong_number_type_arguments_test.dart b/tests/language/wrong_number_type_arguments_test.dart
index efb209962d78467cb4711b76fd6f9aa6aa10ff23..f04f438524b2fd63b7c79b7930c7572133c13c2b 100644
--- a/tests/language/wrong_number_type_arguments_test.dart
+++ b/tests/language/wrong_number_type_arguments_test.dart
@@ -3,9 +3,39 @@
 // BSD-style license that can be found in the LICENSE file.
 
 // Map takes 2 type arguments.
-Map<String> foo;  /// 00: static type warning
+Map
+<String> /// 00: static type warning
+foo;
+Map
+<String> /// 02: static type warning
+baz;
 
 main() {
-  foo = null;  /// 00: continued
-  var bar = new Map<String>();  /// 01: compile-time error
+  foo = null;
+  var bar = new Map
+  <String> /// 01: compile-time error
+  ();
+  testNonNullAssignment(); /// 02: continued
+}
+
+isCheckedMode() {
+  try {
+    var i = 1;
+    String s = i;
+    return false;
+  } catch (e) {
+    return true;
+  }
+}
+
+void testNonNullAssignment() {
+  bool got_type_error = false;
+  try {
+    baz = new Map();
+  } on TypeError catch (error) {
+    print(error);
+    got_type_error = true;
+  }
+  // Type error in checked mode only.
+  Expect.isTrue(got_type_error == isCheckedMode());
 }