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Diffstat (limited to 'libgo/go/sync/waitgroup.go')
| -rw-r--r-- | libgo/go/sync/waitgroup.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libgo/go/sync/waitgroup.go b/libgo/go/sync/waitgroup.go index 0165b1f..bc9e738 100644 --- a/libgo/go/sync/waitgroup.go +++ b/libgo/go/sync/waitgroup.go @@ -32,10 +32,11 @@ type WaitGroup struct { // Add adds delta, which may be negative, to the WaitGroup counter. // If the counter becomes zero, all goroutines blocked on Wait() are released. +// If the counter goes negative, Add panics. func (wg *WaitGroup) Add(delta int) { v := atomic.AddInt32(&wg.counter, int32(delta)) if v < 0 { - panic("sync: negative WaitGroup count") + panic("sync: negative WaitGroup counter") } if v > 0 || atomic.LoadInt32(&wg.waiters) == 0 { return |