--- /dev/null
+// +build ignore
+
+package B1
+
+import "time"
+
+var startup = time.Now()
+
+func example() time.Duration {
+ before := time.Now()
+ time.Sleep(1)
+ return time.Now().Sub(before)
+}
+
+func msSinceStartup() int64 {
+ return int64(time.Now().Sub(startup) / time.Millisecond)
+}