Version 5.0.71.35 (cherry-pick)

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index ad6c451cbe8e985b2390f904e010386a79cc2b83..1c9be1aa49acee10fded7f9d03cee3aebfcfcc26 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -3069,6 +3069,9 @@ void Heap::CreateFillerObjectAt(Address addr, int size) {
 bool Heap::CanMoveObjectStart(HeapObject* object) {
   if (!FLAG_move_object_start) return false;
 
+  // Sampling heap profiler may have a reference to the object.
+  if (isolate()->heap_profiler()->is_sampling_allocations()) return false;
+
   Address address = object->address();
 
   if (lo_space()->Contains(object)) return false;