Include filename in ImageFile state

Tests/test_pickle.py

@@ -81,6 +81,7 @@ def test_pickle_jpeg() -> None:
  unpickled_image = pickle.loads(pickle.dumps(image))
 
  # Assert
+ assert unpickled_image.filename == "Tests/images/hopper.jpg"
  assert len(unpickled_image.layer) == 3
  assert unpickled_image.layers == 3
 

src/PIL/Image.py

@@ -2543,7 +2543,9 @@ def save(
  from . import ImageFile
 
  # may mutate self!
- if isinstance(self, ImageFile.ImageFile) and filename == self.filename:
+ if isinstance(self, ImageFile.ImageFile) and os.path.abspath(
+ filename
+ ) == os.path.abspath(self.filename):
  self._ensure_mutable()
  else:
  self.load()

src/PIL/ImageFile.py

@@ -252,8 +252,12 @@ def get_format_mimetype(self) -> str | None:
  return Image.MIME.get(self.format.upper())
  return None
 
+ def __getstate__(self) -> list[Any]:
+ return super().__getstate__() + [self.filename]
+
  def __setstate__(self, state: list[Any]) -> None:
  self.tile = []
+ self.filename = state[5]
  super().__setstate__(state)
 
  def verify(self) -> None:

src/PIL/JpegImagePlugin.py

@@ -403,8 +403,8 @@ def __getstate__(self) -> list[Any]:
  return super().__getstate__() + [self.layers, self.layer]
 
  def __setstate__(self, state: list[Any]) -> None:
+ self.layers, self.layer = state[6:]
  super().__setstate__(state)
- self.layers, self.layer = state[5:]
 
  def load_read(self, read_bytes: int) -> bytes:
  """