time: prepare for 64-bit ints
The code was trying to interpret a uint32 n as a signed quantity
and then store it in an int. For this, int(n) currently works, but when
int becomes 64 bits one must write int(int32(n)) instead, to get
the 32-bit sign extension.
Update #2188.
R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6551068
diff --git a/src/pkg/time/zoneinfo_read.go b/src/pkg/time/zoneinfo_read.go
index ebb4205..d57c09e 100644
--- a/src/pkg/time/zoneinfo_read.go
+++ b/src/pkg/time/zoneinfo_read.go
@@ -141,7 +141,7 @@
if n, ok = zonedata.big4(); !ok {
return nil, badData
}
- zone[i].offset = int(n)
+ zone[i].offset = int(int32(n))
var b byte
if b, ok = zonedata.byte(); !ok {
return nil, badData
