Fixed randomOldMsg out of bounds

2020-06-12 17:34:44 -07:00 · 2020-06-12 17:34:44 -07:00 · b36f8f47de
parent b37eee0bea
commit b36f8f47de
1 changed files with 1 additions and 1 deletions
--- a/channel.go
+++ b/channel.go
@ -255,7 +255,7 @@ func (ch *Channel) randomOldMsg() Message {
 	defer ch.messageMutex.Unlock()

 	// Pick a random index from last, clamped to 10 and len channel.
-	n := len(ch.messageids) - rand.Intn(len(ch.messageids))%10
+	n := len(ch.messageids) - 1 - rand.Intn(len(ch.messageids))%10
 	return ch.messages[ch.messageids[n]]
 }