diff options
Diffstat (limited to 'src/os/exec')
| -rw-r--r-- | src/os/exec/exec.go | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/os/exec/exec.go b/src/os/exec/exec.go index e0c509cbef..aa7a6be7f0 100644 --- a/src/os/exec/exec.go +++ b/src/os/exec/exec.go @@ -357,7 +357,9 @@ type Cmd struct { cachedLookExtensions struct{ in, out string } // startCalled records that Start was attempted, regardless of outcome. - startCalled atomic.Bool + // (Until go.dev/issue/77075 is resolved, we use atomic.SwapInt32, + // not atomic.Bool.Swap, to avoid triggering the copylocks vet check.) + startCalled int32 } // A ctxResult reports the result of watching the Context associated with a @@ -640,7 +642,7 @@ func (c *Cmd) Start() error { // Check for doubled Start calls before we defer failure cleanup. If the prior // call to Start succeeded, we don't want to spuriously close its pipes. // It is an error to call Start twice even if the first call did not create a process. - if c.startCalled.Swap(true) { + if atomic.SwapInt32(&c.startCalled, 1) != 0 { return errors.New("exec: already started") } |