Treat pointers in optimized code as strong before all weak dependencies are registered.

src/heap/heap-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_HEAP_HEAP_INL_H_
 #define V8_HEAP_HEAP_INL_H_
 
 #include <cmath>
 
 #include "src/base/platform/platform.h"
@@ skipping 711 matching lines @@
   heap_->always_allocate_scope_depth_++;
 }
 
 
 AlwaysAllocateScope::~AlwaysAllocateScope() {
   heap_->always_allocate_scope_depth_--;
   DCHECK(heap_->always_allocate_scope_depth_ == 0);
 }
 
 
-#ifdef VERIFY_HEAP
-NoWeakObjectVerificationScope::NoWeakObjectVerificationScope() {
-  Isolate* isolate = Isolate::Current();
-  isolate->heap()->no_weak_object_verification_scope_depth_++;
-}
-
-
-NoWeakObjectVerificationScope::~NoWeakObjectVerificationScope() {
-  Isolate* isolate = Isolate::Current();
-  isolate->heap()->no_weak_object_verification_scope_depth_--;
-}
-#endif
-
-
 GCCallbacksScope::GCCallbacksScope(Heap* heap) : heap_(heap) {
   heap_->gc_callbacks_depth_++;
 }
 
 
 GCCallbacksScope::~GCCallbacksScope() { heap_->gc_callbacks_depth_--; }
 
 
 bool GCCallbacksScope::CheckReenter() {
   return heap_->gc_callbacks_depth_ == 1;
@@ skipping 13 matching lines @@
 
 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) {
   for (Object** current = start; current < end; current++) {
     CHECK((*current)->IsSmi());
   }
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_INL_H_