[heap] Pass the right arguments to MSAN for promotion queue entries.

src/heap/heap.cc

 // 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.
 
 #include "src/heap/heap.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/ast/scopeinfo.h"
 #include "src/base/bits.h"
@@ skipping 1567 matching lines @@
 
   int entries_count =
       static_cast<int>(head_end - head_start) / kEntrySizeInWords;
 
   emergency_stack_ = new List<Entry>(2 * entries_count);
 
   while (head_start != head_end) {
     struct Entry* entry = head_start++;
     // New space allocation in SemiSpaceCopyObject marked the region
     // overlapping with promotion queue as uninitialized.
-    MSAN_MEMORY_IS_INITIALIZED(&entry->size_, sizeof(size));
-    MSAN_MEMORY_IS_INITIALIZED(&entry->obj_, sizeof(obj));
+    MSAN_MEMORY_IS_INITIALIZED(entry, sizeof(struct Entry));
     emergency_stack_->Add(*entry);
   }
   rear_ = head_end;
 }
 
 
 class ScavengeWeakObjectRetainer : public WeakObjectRetainer {
  public:
   explicit ScavengeWeakObjectRetainer(Heap* heap) : heap_(heap) {}
 
@@ skipping 4750 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8