Out-of-line constant pool on Arm: Stage 3 - Set Constant Pool Pointer on Function Entry

src/objects-visiting-inl.h

Index: src/objects-visiting-inl.h
diff --git a/src/objects-visiting-inl.h b/src/objects-visiting-inl.h
index 1a68344b26a6782f83c9e4661b6a8f4e9831d402..2242d0be126e2afbdf753cbeaf0ddc69212a8af8 100644
--- a/src/objects-visiting-inl.h
+++ b/src/objects-visiting-inl.h
@@ -478,14 +478,17 @@ void StaticMarkingVisitor<StaticVisitor>::VisitConstantPoolArray(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
   ConstantPoolArray* constant_pool = ConstantPoolArray::cast(object);
-  int first_ptr_offset = constant_pool->OffsetOfElementAt(
-      constant_pool->first_ptr_index());
-  int last_ptr_offset = constant_pool->OffsetOfElementAt(
-      constant_pool->first_ptr_index() + constant_pool->count_of_ptr_entries());
-  StaticVisitor::VisitPointers(
-      heap,
-      HeapObject::RawField(object, first_ptr_offset),
-      HeapObject::RawField(object, last_ptr_offset));
+  if (constant_pool->count_of_ptr_entries() > 0) {
+    int first_ptr_offset = constant_pool->OffsetOfElementAt(
+        constant_pool->first_ptr_index());
+    int last_ptr_offset = constant_pool->OffsetOfElementAt(
+        constant_pool->first_ptr_index() +
+        constant_pool->count_of_ptr_entries());
+    StaticVisitor::VisitPointers(
+        heap,
+        HeapObject::RawField(object, first_ptr_offset),
+        HeapObject::RawField(object, last_ptr_offset));
+  }
 }