diff options
Diffstat (limited to 'src/testing')
| -rw-r--r-- | src/testing/synctest/synctest.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/testing/synctest/synctest.go b/src/testing/synctest/synctest.go index 57a6fbfbd6..0911519aab 100644 --- a/src/testing/synctest/synctest.go +++ b/src/testing/synctest/synctest.go @@ -93,6 +93,11 @@ // A [sync.WaitGroup] becomes associated with a bubble on the first // call to Add or Go. Once a WaitGroup is associated with a bubble, // calling Add or Go from outside that bubble is a fatal error. +// (As a technical limitation, a WaitGroup defined as a package +// variable, such as "var wg sync.WaitGroup", cannot be associated +// with a bubble and operations on it may not be durably blocking. +// This limitation does not apply to a *WaitGroup stored in a +// package variable, such as "var wg = new(sync.WaitGroup)".) // // [sync.Cond.Wait] is durably blocking. Waking a goroutine in a bubble // blocked on Cond.Wait from outside the bubble is a fatal error. |