From bfb50ab7ff85b409b93908e14897a3abd2a4a032 Mon Sep 17 00:00:00 2001
From: Rishabh Tewari <rishabhtewari1@gmail.com>
Date: Sun, 28 Apr 2019 13:03:17 -0500
Subject: [PATCH] device: don't crash on Linux if no devices are found

Fixes #634
Closes #635
---
 panda/src/device/linuxInputDeviceManager.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/panda/src/device/linuxInputDeviceManager.cxx b/panda/src/device/linuxInputDeviceManager.cxx
index 8eed3e1cc3..7b9b9fdf6f 100644
--- a/panda/src/device/linuxInputDeviceManager.cxx
+++ b/panda/src/device/linuxInputDeviceManager.cxx
@@ -61,6 +61,9 @@ LinuxInputDeviceManager() {
 
     // We'll want to sort the devices by index, since the order may be
     // meaningful (eg. for the Xbox wireless receiver).
+    if (indices.empty()) {
+      return;
+    }
     std::sort(indices.begin(), indices.end());
     _evdev_devices.resize(indices.back() + 1, nullptr);