From c9c4253c84e28e208f5a578fb15d5b3fdcff74aa Mon Sep 17 00:00:00 2001
From: Chris Lalancette <clalancette@openrobotics.org>
Date: Wed, 27 May 2020 21:56:11 +0000
Subject: [PATCH] Make sure the Waitable class has a virtual destructor.

Noticed while reviewing this issue.

Signed-off-by: Chris Lalancette <clalancette@openrobotics.org>
---
 rclcpp/include/rclcpp/waitable.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rclcpp/include/rclcpp/waitable.hpp b/rclcpp/include/rclcpp/waitable.hpp
index 2f28234..428cc1d 100644
--- a/rclcpp/include/rclcpp/waitable.hpp
+++ b/rclcpp/include/rclcpp/waitable.hpp
@@ -30,6 +30,9 @@ class Waitable
 public:
   RCLCPP_SMART_PTR_DEFINITIONS_NOT_COPYABLE(Waitable)
 
+  RCLCPP_PUBLIC
+  virtual ~Waitable() = default;
+
   /// Get the number of ready subscriptions
   /**
    * Returns a value of 0 by default.