From 30d7eb269e61648fc5d79b741195b7ee9ea9c934 Mon Sep 17 00:00:00 2001
From: William Woodall <william@osrfoundation.org>
Date: Mon, 16 Mar 2015 17:28:32 -0700
Subject: [PATCH] add a clarifying comment

---
 rclcpp/include/rclcpp/executors/multi_threaded_executor.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rclcpp/include/rclcpp/executors/multi_threaded_executor.hpp b/rclcpp/include/rclcpp/executors/multi_threaded_executor.hpp
index d8d9d498f0..9f70558be4 100644
--- a/rclcpp/include/rclcpp/executors/multi_threaded_executor.hpp
+++ b/rclcpp/include/rclcpp/executors/multi_threaded_executor.hpp
@@ -58,7 +58,7 @@ class MultiThreadedExecutor : public executor::Executor
     std::vector<std::thread> threads;
     {
       std::lock_guard<std::mutex> wait_lock(wait_mutex_);
-      size_t thread_id_ = 1;
+      size_t thread_id_ = 1;  // Use a _ suffix to avoid shadowing `rclcpp::thread_id`
       for (size_t i = number_of_threads_; i > 0; --i)
       {
         std::this_thread::sleep_for(std::chrono::milliseconds(100));