From 3016d6fbdb867eeb9cff7aa19fe61fa29ea13b72 Mon Sep 17 00:00:00 2001
From: JasonLG1979 <jasonlevigray3@gmail.com>
Date: Wed, 17 Nov 2021 21:15:35 -0600
Subject: [PATCH] Guard against tracks_len being zero

to prevent 'index out of bounds: the len is 0 but the index is 0'
https://github.com/librespot-org/librespot/issues/226#issuecomment-971642037
---
 connect/src/spirc.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/connect/src/spirc.rs b/connect/src/spirc.rs
index d644e2b0..344f63b7 100644
--- a/connect/src/spirc.rs
+++ b/connect/src/spirc.rs
@@ -1140,6 +1140,14 @@ impl SpircTask {
     fn get_track_id_to_play_from_playlist(&self, index: u32) -> Option<(SpotifyId, u32)> {
         let tracks_len = self.state.get_track().len();
 
+        // Guard against tracks_len being zero to prevent
+        // 'index out of bounds: the len is 0 but the index is 0'
+        // https://github.com/librespot-org/librespot/issues/226#issuecomment-971642037
+        if tracks_len == 0 {
+            warn!("No playable track found in state: {:?}", self.state);
+            return None;
+        }
+
         let mut new_playlist_index = index as usize;
 
         if new_playlist_index >= tracks_len {