Assert no VM handles are created in the zone that belongs to a ApiNativeScopes.

runtime/vm/handles.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 "vm/handles.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
+#include "vm/dart_api_state.h"
 #include "vm/flags.h"
 #include "vm/isolate.h"
 #include "vm/os.h"
 #include "vm/raw_object.h"
 #include "vm/visitor.h"
 #include "vm/zone.h"
 
 #include "vm/handles_impl.h"
 
 namespace dart {
@@ skipping 17 matching lines @@
 }
 
 
 void VMHandles::VisitObjectPointers(ObjectPointerVisitor* visitor) {
   return Handles<kVMHandleSizeInWords,
                  kVMHandlesPerChunk,
                  kOffsetOfRawPtr>::VisitObjectPointers(visitor);
 }
 
 
+#if defined(DEBUG)
+static bool IsCurrentApiNativeScope(Zone* zone) {
+  ApiNativeScope* scope = ApiNativeScope::Current();
+  return (scope != NULL) && (scope->zone() == zone);
+}
+#endif  // DEBUG
+
+
 uword VMHandles::AllocateHandle(Zone* zone) {
+  DEBUG_ASSERT(!IsCurrentApiNativeScope(zone));
   return Handles<kVMHandleSizeInWords,
                  kVMHandlesPerChunk,
                  kOffsetOfRawPtr>::AllocateHandle(zone);
 }
 
 
 uword VMHandles::AllocateZoneHandle(Zone* zone) {
+  DEBUG_ASSERT(!IsCurrentApiNativeScope(zone));
   return Handles<kVMHandleSizeInWords,
                  kVMHandlesPerChunk,
                  kOffsetOfRawPtr>::AllocateZoneHandle(zone);
 }
 
 
 bool VMHandles::IsZoneHandle(uword handle) {
   return Handles<kVMHandleSizeInWords,
                  kVMHandlesPerChunk,
                  kOffsetOfRawPtr >::IsZoneHandle(handle);
@@ skipping 54 matching lines @@
   isolate()->IncrementNoHandleScopeDepth();
 }
 
 
 NoHandleScope::~NoHandleScope() {
   isolate()->DecrementNoHandleScopeDepth();
 }
 #endif  // defined(DEBUG)
 
 }  // namespace dart