From 9116bf80253f5e5a5d2dbac8c08f202d4045cf7c Mon Sep 17 00:00:00 2001
From: Jakub Sztandera <kubuxu@protonmail.ch>
Date: Thu, 17 Nov 2016 19:16:05 +0100
Subject: [PATCH] Fix lengths in prefix too

---
 cid.go      | 2 +-
 cid_test.go | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/cid.go b/cid.go
index bf553ea..04cc09a 100644
--- a/cid.go
+++ b/cid.go
@@ -266,7 +266,7 @@ func (p Prefix) Sum(data []byte) (*Cid, error) {
 }
 
 func (p Prefix) Bytes() []byte {
-	buf := make([]byte, 16)
+	buf := make([]byte, 4*binary.MaxVarintLen64)
 	n := binary.PutUvarint(buf, p.Version)
 	n += binary.PutUvarint(buf[n:], p.Codec)
 	n += binary.PutUvarint(buf[n:], uint64(p.MhType))
diff --git a/cid_test.go b/cid_test.go
index e6e479e..c03e281 100644
--- a/cid_test.go
+++ b/cid_test.go
@@ -124,7 +124,7 @@ func Test16BytesVarint(t *testing.T) {
 	hash, _ := mh.Sum(data, mh.SHA2_256, -1)
 	c := NewCidV1(CBOR, hash)
 
-	c.codec = 1 << 54
+	c.codec = 1 << 63
 	_ = c.Bytes()
 }