pkg syscall (freebsd-386-cgo), func Mknod(string, uint32, int) error
pkg syscall (freebsd-386-cgo), func Mmap(int, int64, int, int, int) ([]uint8, error)
pkg syscall (freebsd-386-cgo), func Munmap([]uint8) error
pkg syscall (freebsd-386-cgo), func Nanosleep(*Timespec, *Timespec) error
pkg syscall (freebsd-386-cgo), func Open(string, int, uint32) (int, error)

pkg syscall (darwin-386), func Mknod(string, uint32, int) error
pkg syscall (darwin-386), func Mmap(int, int64, int, int, int) ([]uint8, error)
pkg syscall (darwin-386), func Munmap([]uint8) error
pkg syscall (darwin-386), func NsecToTimespec(int64) Timespec
pkg syscall (darwin-386), func Open(string, int, uint32) (int, error)

pkg syscall (netbsd-arm64-cgo), func Mknod(string, uint32, int) error
pkg syscall (netbsd-arm64-cgo), func Mmap(int, int64, int, int, int) ([]uint8, error)
pkg syscall (netbsd-arm64-cgo), func Munmap([]uint8) error
pkg syscall (netbsd-arm64-cgo), func Nanosleep(*Timespec, *Timespec) error
pkg syscall (netbsd-arm64-cgo), func Open(string, int, uint32) (int, error)

pkg syscall (freebsd-arm64), func Mknod(string, uint32, uint64) error
pkg syscall (freebsd-arm64), func Mmap(int, int64, int, int, int) ([]uint8, error)
pkg syscall (freebsd-arm64), func Munmap([]uint8) error
pkg syscall (freebsd-arm64), func Nanosleep(*Timespec, *Timespec) error
pkg syscall (freebsd-arm64), func Open(string, int, uint32) (int, error)

pkg syscall (freebsd-riscv64), func Mknod(string, uint32, uint64) error #53466
pkg syscall (freebsd-riscv64), func Mmap(int, int64, int, int, int) ([]uint8, error) #53466
pkg syscall (freebsd-riscv64), func Munmap([]uint8) error #53466
pkg syscall (freebsd-riscv64), func Nanosleep(*Timespec, *Timespec) error #53466
pkg syscall (freebsd-riscv64), func Open(string, int, uint32) (int, error) #53466

    /**
     * Usually the same as map, but smaller for the headMap(), tailMap(), or subMap() of a
     * SortedAsMap.
     */
    final transient Map<K, Collection<V>> submap;

    AsMap(Map<K, Collection<V>> submap) {
      this.submap = submap;
    }

    @Override
    protected Set<Entry<K, Collection<V>>> createEntrySet() {
      return new AsMapEntries();

    Entry<K, V> secondEntry = iterator.next();
    K key = secondEntry.getKey();
    SortedMap<K, V> subMap = map.tailMap(key);
    subMap.remove(key);
    assertNull(subMap.remove(firstEntry.getKey()));
    assertEquals(map.size(), oldSize - 1);
    assertFalse(map.containsKey(key));
    assertEquals(subMap.size(), oldSize - 2);
  }

  public void testTailMapClearThrough() {
    SortedMap<K, V> map;
    try {

    Entry<K, V> secondEntry = iterator.next();
    K key = secondEntry.getKey();
    SortedMap<K, V> subMap = map.tailMap(key);
    subMap.remove(key);
    assertNull(subMap.remove(firstEntry.getKey()));
    assertEquals(map.size(), oldSize - 1);
    assertFalse(map.containsKey(key));
    assertEquals(subMap.size(), oldSize - 2);
  }

  public void testTailMapClearThrough() {
    SortedMap<K, V> map;
    try {

    }

    private NavigableMap<Cut<C>, Range<C>> subMap(Range<Cut<C>> window) {
      if (window.isConnected(upperBoundWindow)) {
        return new RangesByUpperBound<>(rangesByLowerBound, window.intersection(upperBoundWindow));
      } else {
        return ImmutableSortedMap.of();
      }
    }

    @Override
    public NavigableMap<Cut<C>, Range<C>> subMap(

    SortedMap<String, Integer> subMap = map.subMap("a", "b");
    assertTrue(subMap instanceof SynchronizedSortedMap);
    assertThat(((SynchronizedSortedMap<String, Integer>) subMap).mutex).isSameInstanceAs(mutex);
  }

  public void testSubMap_k_b_k_b() {
    NavigableMap<String, Integer> map = create();
    NavigableMap<String, Integer> subMap = map.subMap("a", true, "b", false);