From: Matt Joiner <anacrolix@gmail.com>
Date: Sun, 10 Jul 2016 13:00:52 +0000 (+1000)
Subject: Piece offset computed incorrectly in Reader.readOnceAt
X-Git-Tag: v1.0.0~647
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=363f042b9520aa1edf4c013b97ba483f87bcc5cb;p=btrtrc.git

Piece offset computed incorrectly in Reader.readOnceAt

Possibly it was only wrong on the last piece in rare circumstances.
---

diff --git a/reader.go b/reader.go
index d1f9d2aa..b5eacf5b 100644
--- a/reader.go
+++ b/reader.go
@@ -170,7 +170,7 @@ func (r *Reader) readOnceAt(b []byte, pos int64, ctxErr *error) (n int, err erro
 		b1 := b[:avail]
 		pi := int(pos / r.t.Info().PieceLength)
 		ip := r.t.Info().Piece(pi)
-		po := pos % ip.Length()
+		po := pos % r.t.Info().PieceLength
 		missinggo.LimitLen(&b1, ip.Length()-po)
 		n, err = r.t.readAt(b1, pos)
 		if n != 0 {