void AXTree::CallNodeChangeCallbacks(AXNode* node,
                                     const AXNodeData& old_data,
                                     const AXNodeData& new_data) {
  for (AXTreeObserver& observer : observers_)
    observer.OnNodeDataWillChange(this, old_data, new_data);

  if (old_data.role != new_data.role) {
    for (AXTreeObserver& observer : observers_)
      observer.OnRoleChanged(this, node, old_data.role, new_data.role);
  }

  if (old_data.state != new_data.state) {
    for (int32_t i = static_cast<int32_t>(ax::mojom::State::kNone) + 1;
         i <= static_cast<int32_t>(ax::mojom::State::kMaxValue); ++i) {
      ax::mojom::State state = static_cast<ax::mojom::State>(i);
      if (old_data.HasState(state) != new_data.HasState(state)) {
        for (AXTreeObserver& observer : observers_)
          observer.OnStateChanged(this, node, state, new_data.HasState(state));
      }
    }
  }

  auto string_callback = [this, node](ax::mojom::StringAttribute attr,
                                      const std::string& old_string,
                                      const std::string& new_string) {
    for (AXTreeObserver& observer : observers_) {
      observer.OnStringAttributeChanged(this, node, attr, old_string,
                                        new_string);
    }
  };
  CallIfAttributeValuesChanged(old_data.string_attributes,
                               new_data.string_attributes, std::string(),
                               string_callback);

  auto bool_callback = [this, node](ax::mojom::BoolAttribute attr,
                                    const bool& old_bool,
                                    const bool& new_bool) {
    for (AXTreeObserver& observer : observers_)
      observer.OnBoolAttributeChanged(this, node, attr, new_bool);
  };
  CallIfAttributeValuesChanged(old_data.bool_attributes,
                               new_data.bool_attributes, false, bool_callback);

  auto float_callback = [this, node](ax::mojom::FloatAttribute attr,
                                     const float& old_float,
                                     const float& new_float) {
    for (AXTreeObserver& observer : observers_)
      observer.OnFloatAttributeChanged(this, node, attr, old_float, new_float);
  };
  CallIfAttributeValuesChanged(old_data.float_attributes,
                               new_data.float_attributes, 0.0f, float_callback);

  auto int_callback = [this, node](ax::mojom::IntAttribute attr,
                                   const int& old_int, const int& new_int) {
    for (AXTreeObserver& observer : observers_)
      observer.OnIntAttributeChanged(this, node, attr, old_int, new_int);
  };
  CallIfAttributeValuesChanged(old_data.int_attributes, new_data.int_attributes,
                               0, int_callback);

  auto intlist_callback = [this, node](
                              ax::mojom::IntListAttribute attr,
                              const std::vector<int32_t>& old_intlist,
                              const std::vector<int32_t>& new_intlist) {
    for (AXTreeObserver& observer : observers_)
      observer.OnIntListAttributeChanged(this, node, attr, old_intlist,
                                         new_intlist);
  };
  CallIfAttributeValuesChanged(old_data.intlist_attributes,
                               new_data.intlist_attributes,
                               std::vector<int32_t>(), intlist_callback);

  auto stringlist_callback =
      [this, node](ax::mojom::StringListAttribute attr,
                   const std::vector<std::string>& old_stringlist,
                   const std::vector<std::string>& new_stringlist) {
        for (AXTreeObserver& observer : observers_)
          observer.OnStringListAttributeChanged(this, node, attr,
                                                old_stringlist, new_stringlist);
      };
  CallIfAttributeValuesChanged(old_data.stringlist_attributes,
                               new_data.stringlist_attributes,
                               std::vector<std::string>(), stringlist_callback);
}

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.