From ceaf5a2360439bc5fd8de3aec9cfd11c99bb58c3 Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Mon, 29 Jan 2018 18:21:37 +1100
Subject: [PATCH] Add some sanity checks to priorities extracted from
 Torrent.pendingPieces

---
 torrent.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/torrent.go b/torrent.go
index 1eb237e8..41937517 100644
--- a/torrent.go
+++ b/torrent.go
@@ -999,7 +999,14 @@ func (t *Torrent) piecePriority(piece int) piecePriority {
 	if !ok {
 		return PiecePriorityNone
 	}
-	return piecePriority(-prio)
+	if prio > 0 {
+		panic(prio)
+	}
+	ret := piecePriority(-prio)
+	if ret == PiecePriorityNone {
+		panic(piece)
+	}
+	return ret
 }
 
 func (t *Torrent) pendRequest(req request) {