diff options
Diffstat (limited to 'libgo/go/sync/waitgroup.go')
| -rw-r--r-- | libgo/go/sync/waitgroup.go | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/libgo/go/sync/waitgroup.go b/libgo/go/sync/waitgroup.go index f266f7c2b97..2fa7c3e07ed 100644 --- a/libgo/go/sync/waitgroup.go +++ b/libgo/go/sync/waitgroup.go @@ -63,13 +63,11 @@ func (wg *WaitGroup) Add(delta int) { state := atomic.AddUint64(statep, uint64(delta)<<32) v := int32(state >> 32) w := uint32(state) - if race.Enabled { - if delta > 0 && v == int32(delta) { - // The first increment must be synchronized with Wait. - // Need to model this as a read, because there can be - // several concurrent wg.counter transitions from 0. - race.Read(unsafe.Pointer(&wg.sema)) - } + if race.Enabled && delta > 0 && v == int32(delta) { + // The first increment must be synchronized with Wait. + // Need to model this as a read, because there can be + // several concurrent wg.counter transitions from 0. + race.Read(unsafe.Pointer(&wg.sema)) } if v < 0 { panic("sync: negative WaitGroup counter") |