Check that chunk buffer length fits in 16 bit.

Change-Id: Id086a54aa8a1990c1979e747c1c02e53bed6d447
2014-08-20 15:05:04 +02:00 · 2014-08-20 15:05:04 +02:00 · fd01d07589
parent 1ca7f24137
commit fd01d07589
1 changed files with 3 additions and 1 deletions
--- a/storage/local/delta.go
+++ b/storage/local/delta.go
@ -326,7 +326,9 @@ func (c *deltaEncodedChunk) lastTime() clientmodel.Timestamp {
 }

 func (c *deltaEncodedChunk) marshal(w io.Writer) error {
-	// TODO: check somewhere that configured buf len cannot overflow 16 bit.
+	if len(c.buf) > math.MaxUint16 {
+		panic("chunk buffer length would overflow a 16 bit uint.")
+	}
 	binary.LittleEndian.PutUint16(c.buf[deltaHeaderBufLenOffset:], uint16(len(c.buf)))

 	n, err := w.Write(c.buf[:cap(c.buf)])