Two of these test cases fail

runtime/vm/debugger_api_impl_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_debugger_api.h"
 #include "include/dart_mirrors_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/thread.h"
 #include "vm/unit_test.h"
@@ skipping 1504 matching lines @@
   EXPECT(Dart_IsInteger(h));
   EXPECT_EQ(10, ToInt64(h));
 
   // Check that the side effect of the previous expression is
   // persistent.
   h = Dart_EvaluateExpr(p, NewString("_factor"));
   EXPECT_VALID(h);
   EXPECT(Dart_IsInteger(h));
   EXPECT_EQ(10, ToInt64(h));
 
+  // Check that we return an error on invalid expressions.
+  EXPECT(Dart_IsError(Dart_EvaluateExpr(p, NewString("1; 2"))));
+  EXPECT(Dart_IsError(Dart_EvaluateExpr(p, NewString("int x"))));
+  EXPECT(Dart_IsError(Dart_EvaluateExpr(p, NewString("var x"))));
+
   breakpoint_hit = true;
   breakpoint_hit_counter++;
 }
 
 
 TEST_CASE(Debug_EvaluateExpr) {
   const char* kScriptChars =
       "import 'dart:math';               \n"
       "main() {                          \n"
       "  var p = new Point(3, 4);        \n"
@@ skipping 230 matching lines @@
 
   Dart_Handle list_type = Dart_InstanceGetType(list_access_test_obj);
   Dart_Handle super_type = Dart_GetSupertype(list_type);
   EXPECT(!Dart_IsError(super_type));
   super_type = Dart_GetSupertype(super_type);
   EXPECT(!Dart_IsError(super_type));
   EXPECT(super_type == Dart_Null());
 }
 
 }  // namespace dart