- Create a local scope so that the GC can collect the external

runtime/vm/dart_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_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "platform/utils.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
@@ skipping 1361 matching lines @@
 
   obj = Dart_NewTypedData(kFloat32x4, 10);
   EXPECT_VALID(obj);
   CheckFloat32x4Data(obj);
 
   int peer = 0;
   float data[] = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
                    0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
                    0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
                    0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
-  obj = Dart_NewExternalTypedData(kFloat32x4,
-                                  data,
-                                  10,
-                                  &peer,
-                                  ExternalTypedDataCallbackFinalizer);
-  CheckFloat32x4Data(obj);
+  // Push a scope so that we can collect the local handle created as part of
+  // Dart_NewExternalTypedData.
+  Dart_EnterScope();
+  {
+    Dart_Handle lcl = Dart_NewExternalTypedData(
+        kFloat32x4, data, 10, &peer, ExternalTypedDataCallbackFinalizer);
+    CheckFloat32x4Data(lcl);
+  }
+  Dart_ExitScope();
   Isolate::Current()->heap()->CollectGarbage(Heap::kNew);
   EXPECT(peer == 42);
 }
 
 
 // Unit test for entering a scope, creating a local handle and exiting
 // the scope.
 UNIT_TEST_CASE(EnterExitScope) {
   TestIsolateScope __test_isolate__;
 
@@ skipping 6279 matching lines @@
                                    NewString("main"),
                                    0,
                                    NULL);
   int64_t value = 0;
   result = Dart_IntegerToInt64(result, &value);
   EXPECT_VALID(result);
   EXPECT_EQ(260, value);
 }
 
 }  // namespace dart