From 3c51e335c3ac7c3083c2e704f56da6a156baae11 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Sat, 4 Aug 2018 21:40:26 -0400
Subject: [PATCH] Makes extra sure not to try to read from an empty characters
 list.

---
 OSBindings/Mac/Clock Signal/Machine/CSMachine.mm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm b/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm
index a219a1801..df04b856e 100644
--- a/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm	
+++ b/OSBindings/Mac/Clock Signal/Machine/CSMachine.mm	
@@ -395,7 +395,7 @@ struct ActivityObserver: public Activity::Observer {
 					case VK_ANSI_D:		joysticks[0]->set_input(Inputs::Joystick::Input(Inputs::Joystick::Input::Fire, 2), is_pressed);	break;
 					case VK_ANSI_F:		joysticks[0]->set_input(Inputs::Joystick::Input(Inputs::Joystick::Input::Fire, 3), is_pressed);	break;
 					default:
-						if(characters) {
+						if(characters.length) {
 							joysticks[0]->set_input(Inputs::Joystick::Input([characters characterAtIndex:0]), is_pressed);
 						} else {
 							joysticks[0]->set_input(Inputs::Joystick::Input::Fire, is_pressed);