From: Marcel van Lohuizen <mpvl@golang.org>
Date: Fri, 18 Mar 2016 16:16:56 +0000 (+0100)
Subject: sync: don't assume b.N > 0
X-Git-Tag: go1.7beta1~1224
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=f693015be62a6571e053e15040664d01a450c0e0;p=gostls13.git

sync: don't assume b.N > 0

Change-Id: I6eb91ea73ef887b025e5a8de1dd55f30618e1aa6
Reviewed-on: https://go-review.googlesource.com/20857
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---

diff --git a/src/sync/runtime_sema_test.go b/src/sync/runtime_sema_test.go
index 5b7dd3df3f..a2382f4655 100644
--- a/src/sync/runtime_sema_test.go
+++ b/src/sync/runtime_sema_test.go
@@ -25,6 +25,9 @@ func BenchmarkSemaUncontended(b *testing.B) {
 }
 
 func benchmarkSema(b *testing.B, block, work bool) {
+	if b.N == 0 {
+		return
+	}
 	sem := uint32(0)
 	if block {
 		done := make(chan bool)