From 2662a7ab0d76a2761a5f30371aa0004ca83baef2 Mon Sep 17 00:00:00 2001
From: Fredric Silberberg <fredric@fsilberberg.com>
Date: Tue, 12 Jan 2016 16:27:34 -0500
Subject: [PATCH] Initialized the m_sensors variable to fix artf4798.

Change-Id: Iab7b76c0e36b3a8e5ab764f7dcd6772a2058bd0f
---
 wpilibc/Athena/src/Ultrasonic.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wpilibc/Athena/src/Ultrasonic.cpp b/wpilibc/Athena/src/Ultrasonic.cpp
index f6c99d86db..183e1ce1f9 100644
--- a/wpilibc/Athena/src/Ultrasonic.cpp
+++ b/wpilibc/Athena/src/Ultrasonic.cpp
@@ -25,6 +25,7 @@ constexpr double Ultrasonic::kSpeedOfSoundInchesPerSec;
 Task Ultrasonic::m_task;
 // automatic round robin mode
 std::atomic<bool> Ultrasonic::m_automaticEnabled{false};
+std::set<Ultrasonic*> Ultrasonic::m_sensors;
 
 /**
  * Background task that goes through the list of ultrasonic sensors and pings