From c4d334783f2965d06646ad5600dc736b35ea2597 Mon Sep 17 00:00:00 2001
From: Nate Weibley <nate.weibley@prioria.com>
Date: Wed, 18 Jan 2017 15:05:46 -0500
Subject: [PATCH] SDL: warn with SDL error string when joystick feature
 detection fails

---
 src/Joystick/JoystickSDL.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Joystick/JoystickSDL.cc b/src/Joystick/JoystickSDL.cc
index 854ac4407..57ac14405 100644
--- a/src/Joystick/JoystickSDL.cc
+++ b/src/Joystick/JoystickSDL.cc
@@ -41,9 +41,13 @@ QMap<QString, Joystick*> JoystickSDL::discover(MultiVehicleManager* _multiVehicl
                 hatCount = 0;
             } else {
                 isGameController = false;
+                SDL_ClearError();
                 axisCount = SDL_JoystickNumAxes(sdlJoystick);
                 buttonCount = SDL_JoystickNumButtons(sdlJoystick);
                 hatCount = SDL_JoystickNumHats(sdlJoystick);
+                if (axisCount < 0 || buttonCount < 0 || hatCount < 0) {
+                    qCWarning(JoystickLog) << "\t libsdl error parsing joystick features:" << SDL_GetError();
+                }
             }
 
             SDL_JoystickClose(sdlJoystick);
-- 
2.22.0