sumdb: restore Go 1.12 support
Change-Id: I4711da945699bbe9416a804f6ec28ca95eb4bb7c
Reviewed-on: https://go-review.googlesource.com/c/exp/+/174397
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/sumdb/go.mod b/sumdb/go.mod
index a1a161f..83a9134 100644
--- a/sumdb/go.mod
+++ b/sumdb/go.mod
@@ -1,5 +1,5 @@
module golang.org/x/exp/sumdb
-go 1.13
+go 1.12
require golang.org/x/crypto v0.0.0-20190313024323-a1f597ede03a
diff --git a/sumdb/internal/sumweb/client.go b/sumdb/internal/sumweb/client.go
index 8306a67..364f48d 100644
--- a/sumdb/internal/sumweb/client.go
+++ b/sumdb/internal/sumweb/client.go
@@ -588,7 +588,7 @@
// We only save authenticated tiles to the on-disk cache,
// so the recreated prefix is equally authenticated.
full := tile
- full.W = 1 << tile.H
+ full.W = 1 << uint(tile.H)
if tile != full {
data, err := c.client.ReadCache(c.tileCacheKey(full))
if err == nil {
