From: Mathias Gibbens <mathias@calenhad.com>
Description: Fix integer sadness when dealing with huge numbers on 32bit architectures
Forwarded: https://github.com/juju/schema/issues/24
diff --git a/size.go b/size.go
index 4cbf8db..7d642f1 100644
--- a/size.go
+++ b/size.go
@@ -87,6 +87,6 @@ func parseSize(str string) (MB uint64, err error) {
 
 var sizeSuffixes = "MGTPEZY"
 
-func sizeSuffixMultiplier(i int) int {
-	return 1 << uint(i*10)
+func sizeSuffixMultiplier(i int) int64 {
+	return 1 << uint64(i*10)
 }