time: fix time.Before to reuse t.sec(), u.sec()

Fixes #36987

Change-Id: I91ea1a42f75302de5256a22d382ab7f1b307a498
Reviewed-on: https://go-review.googlesource.com/c/go/+/217360
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/src/time/time.go b/src/time/time.go
index 5fa09687e9cae87c8889c72d015a505ff8513098..3f632dbc3e3664044174eb4a57fa0c90c564e0aa 100644 (file)
--- a/src/time/time.go
+++ b/src/time/time.go
@@ -252,7 +252,9 @@ func (t Time) Before(u Time) bool {
        if t.wall&u.wall&hasMonotonic != 0 {
                return t.ext < u.ext
        }
-       return t.sec() < u.sec() || t.sec() == u.sec() && t.nsec() < u.nsec()
+       ts := t.sec()
+       us := u.sec()
+       return ts < us || ts == us && t.nsec() < u.nsec()
 }
 
 // Equal reports whether t and u represent the same time instant.