fix for floating point exception when adding randomly to the playlist with

only one thing in the playlist or playing the last song in the playlist

git-svn-id: https://svn.musicpd.org/mpd/trunk@1162 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 5 insertions, 3 deletions

diff --git a/src/playlist.c b/src/playlist.c
index bd1d254b6..61679530a 100644
--- a/src/playlist.c
+++ b/src/playlist.c
@@ -505,9 +505,11 @@ int addSongToPlaylist(FILE * fp, Song * song) {
 		/*if(playlist_state==PLAYLIST_STATE_STOP) start = 0;
 		else */if(playlist.queued>=0) start = playlist.queued+1;
 		else start = playlist.current+1;
-		swap = rand()%(playlist.length-start);
-		swap+=start;
-		swapOrder(playlist.length-1,swap);
+                if(start < playlist.length) {
+		        swap = rand()%(playlist.length-start);
+		        swap+=start;
+		        swapOrder(playlist.length-1,swap);
+                }
 	}
 	
 	incrPlaylistVersion();