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authorCherry Zhang <cherryyz@google.com>2020-10-28 09:12:20 -0400
committerCherry Zhang <cherryyz@google.com>2020-10-28 09:12:20 -0400
commita16e30d162c1c7408db7821e7b9513cefa09c6ca (patch)
treeaf752ba9ba44c547df39bb0af9bff79f610ba9d5 /src/sync/once.go
parent91e4d2d57bc341dd82c98247117114c851380aef (diff)
parentcf6cfba4d5358404dd890f6025e573a4b2156543 (diff)
downloadgo-git-a16e30d162c1c7408db7821e7b9513cefa09c6ca.tar.gz
[dev.link] all: merge branch 'master' into dev.linkdev.link
Clean merge. Change-Id: Ia7b2808bc649790198d34c226a61d9e569084dc5
Diffstat (limited to 'src/sync/once.go')
-rw-r--r--src/sync/once.go2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sync/once.go b/src/sync/once.go
index ca04408224..bf4b80c867 100644
--- a/src/sync/once.go
+++ b/src/sync/once.go
@@ -9,6 +9,8 @@ import (
)
// Once is an object that will perform exactly one action.
+//
+// A Once must not be copied after first use.
type Once struct {
// done indicates whether the action has been performed.
// It is first in the struct because it is used in the hot path.