if !ok && read.amended {
			e, ok = m.dirty[key]
			// Regardless of whether the entry was present, record a miss: this key
			// will take the slow path until the dirty map is promoted to the read
			// map.
			m.missLocked()
		}
		m.mu.Unlock()
	}
	if !ok {
		return nil, false
	}
	return e.load()
}

func (e *entry) load() (value any, ok bool) {
	p := e.p.Load()
	if p == nil || p == expunged {

			t.Fatalf("Range visited %v elements of %v-element Map", len(seen), mapSize)
		}
	}
}

func TestIssue40999(t *testing.T) {
	var m sync.Map

	// Since the miss-counting in missLocked (via Delete)
	// compares the miss count with len(m.dirty),
	// add an initial entry to bias len(m.dirty) above the miss count.
	m.Store(nil, struct{}{})

	var finalized uint32