mu  sync.Mutex
	val bool
}

// SetPanicOnExit0 sets panicOnExit0 to v.
//
// SetPanicOnExit0 should be an internal detail,
// but alternate implementations of go test in other
// build systems may need to access it using linkname.
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname SetPanicOnExit0
func SetPanicOnExit0(v bool) {
	panicOnExit0.mu.Lock()

func (TestDeps) StopTestLog() error {
	log.mu.Lock()
	defer log.mu.Unlock()
	err := log.w.Flush()
	log.w = nil
	return err
}

// SetPanicOnExit0 tells the os package whether to panic on os.Exit(0).
func (TestDeps) SetPanicOnExit0(v bool) {
	testlog.SetPanicOnExit0(v)
}

func (TestDeps) CoordinateFuzzing(
	timeout time.Duration,
	limit int64,
	minimizeTimeout time.Duration,
	minimizeLimit int64,

func (fakeTestDeps) MatchString(pat, str string) (bool, error) {
	return false, nil
}

//nolint:unused // U1000 see comment above, we know it's unused normally.
func (fakeTestDeps) SetPanicOnExit0(bool) {}

//nolint:unused // U1000 see comment above, we know it's unused normally.
func (fakeTestDeps) StartCPUProfile(io.Writer) error {
	return nil
}

func (f matchStringOnly) StartTestLog(io.Writer)                      {}
func (f matchStringOnly) StopTestLog() error                          { return errMain }
func (f matchStringOnly) SetPanicOnExit0(bool)                        {}
func (f matchStringOnly) CoordinateFuzzing(time.Duration, int64, time.Duration, int64, int, []corpusEntry, []reflect.Type, string, string) error {
	return errMain
}