From e05f9a1ff4adcc1d76198c2f3f08c84a88a4523e Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Wed, 6 Aug 2025 20:25:27 +1000
Subject: [PATCH] Fix new warning in piece hashing due to new file piece
 WriteTo

---
 storage/file-piece.go | 7 +++++++
 torrent.go            | 4 +---
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/storage/file-piece.go b/storage/file-piece.go
index 23e13da4..d50c509a 100644
--- a/storage/file-piece.go
+++ b/storage/file-piece.go
@@ -288,6 +288,10 @@ func (me *filePieceImpl) WriteTo(w io.Writer) (n int64, err error) {
 		if err != nil {
 			return
 		}
+		panicif.GreaterThan(n1, extent.Length)
+		if n1 < extent.Length {
+			return
+		}
 		panicif.NotEq(n1, extent.Length)
 	}
 	return
@@ -305,6 +309,9 @@ func (me *filePieceImpl) writeFileTo(w io.Writer, fileIndex int, extent segments
 	var f *os.File
 	f, err = me.t.openFile(file)
 	if err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			err = nil
+		}
 		return
 	}
 	defer f.Close()
diff --git a/torrent.go b/torrent.go
index 76a6f8b4..f8a50b92 100644
--- a/torrent.go
+++ b/torrent.go
@@ -1323,9 +1323,7 @@ func (t *Torrent) hashPieceWithSpecificHash(piece pieceIndex, h hash.Hash) (
 	storagePiece := p.Storage()
 	var written int64
 	written, err = storagePiece.WriteTo(w)
-	if err == nil && written != int64(p.length()) {
-		err = fmt.Errorf("wrote %v bytes from storage, piece has length %v", written, p.length())
-	}
+	// TODO: Require the correct number of bytes were written to pass hash.
 	t.countBytesHashed(written)
 	return
 }
-- 
2.51.0