Merge branch 'main' into pyarrow_band_names

.ci/requirements-cibw.txt

@@ -1 +1 @@
-cibuildwheel==3.0.1
+cibuildwheel==3.1.2

.github/workflows/test-cygwin.yml

@@ -52,7 +52,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Cygwin
-        uses: cygwin/cygwin-install-action@v5
+        uses: cygwin/cygwin-install-action@v6
         with:
           packages: >
             gcc-g++
@@ -89,10 +89,6 @@ jobs:
         with:
           dirs: 'C:\cygwin\bin;C:\cygwin\lib\lapack'
 
-      - name: Select Python version
-        run: |
-          ln -sf c:/cygwin/bin/python3.${{ matrix.python-minor-version }} c:/cygwin/bin/python3
-
       - name: pip cache
         uses: actions/cache@v4
         with:

.github/workflows/test-windows.yml

@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.11", "pypy3.10", "3.10", "3.11", "3.12", ">=3.13.5", "3.14"]
+        python-version: ["pypy3.11", "3.10", "3.11", "3.12", ">=3.13.5", "3.14"]
         architecture: ["x64"]
         include:
             # Test the oldest Python on 32-bit

.github/workflows/test.yml

@@ -42,7 +42,6 @@ jobs:
         ]
         python-version: [
           "pypy3.11",
-          "pypy3.10",
           "3.14t",
           "3.14",
           "3.13t",

.github/workflows/wheels-dependencies.sh

@@ -95,7 +95,7 @@ ARCHIVE_SDIR=pillow-depends-main
 # you change those versions, ensure the patch is also updated.
 FREETYPE_VERSION=2.13.3
 HARFBUZZ_VERSION=11.2.1
-LIBPNG_VERSION=1.6.49
+LIBPNG_VERSION=1.6.50
 JPEGTURBO_VERSION=3.1.1
 OPENJPEG_VERSION=2.5.3
 XZ_VERSION=5.8.1

MANIFEST.in

@@ -13,6 +13,7 @@ include LICENSE
 include Makefile
 include tox.ini
 graft Tests
+graft Tests/images
 graft checks
 graft patches
 graft src
@@ -28,8 +29,19 @@ exclude .editorconfig
 exclude .readthedocs.yml
 exclude codecov.yml
 exclude renovate.json
+exclude Tests/images/README.md
+exclude Tests/images/crash*.tif
+exclude Tests/images/string_dimension.tiff
 global-exclude .git*
 global-exclude *.pyc
 global-exclude *.so
 prune .ci
 prune wheels
+prune winbuild/build
+prune winbuild/depends
+prune Tests/errors
+prune Tests/images/jpeg2000
+prune Tests/images/msp
+prune Tests/images/picins
+prune Tests/images/sunraster
+prune Tests/test-images

Tests/test_features.py

@@ -18,11 +18,7 @@ def test_check() -> None:
     for codec in features.codecs:
         assert features.check_codec(codec) == features.check(codec)
     for feature in features.features:
-        if "webp" in feature:
-            with pytest.warns(DeprecationWarning, match="webp"):
-                assert features.check_feature(feature) == features.check(feature)
-        else:
-            assert features.check_feature(feature) == features.check(feature)
+        assert features.check_feature(feature) == features.check(feature)
 
 
 def test_version() -> None:
@@ -48,11 +44,7 @@ def test_version() -> None:
     for codec in features.codecs:
         test(codec, features.version_codec)
     for feature in features.features:
-        if "webp" in feature:
-            with pytest.warns(DeprecationWarning, match="webp"):
-                test(feature, features.version_feature)
-        else:
-            test(feature, features.version_feature)
+        test(feature, features.version_feature)
 
 
 @skip_unless_feature("libjpeg_turbo")
@@ -112,6 +104,25 @@ def test_unsupported_module() -> None:
         features.version_module(module)
 
 
+def test_unsupported_feature() -> None:
+    # Arrange
+    feature = "unsupported_feature"
+    # Act / Assert
+    with pytest.raises(ValueError):
+        features.check_feature(feature)
+    with pytest.raises(ValueError):
+        features.version_feature(feature)
+
+
+def test_unsupported_version() -> None:
+    assert features.version("unsupported_version") is None
+
+
+def test_modulenotfound(monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setattr(features, "features", {"test": ("PIL._test", "", "")})
+    assert features.check_feature("test") is None
+
+
 @pytest.mark.parametrize("supported_formats", (True, False))
 def test_pilinfo(supported_formats: bool) -> None:
     buf = io.StringIO()

Tests/test_image_access.py

@@ -315,3 +315,10 @@ int main(int argc, char* argv[])
         process = subprocess.Popen(["embed_pil.exe"], env=env)
         process.communicate()
         assert process.returncode == 0
+
+    def teardown_method(self) -> None:
+        try:
+            os.remove("embed_pil.c")
+        except FileNotFoundError:
+            # If the test was skipped or failed, the file won't exist
+            pass

Tests/test_image_histogram.py

@@ -10,9 +10,12 @@ def test_histogram() -> None:
 
     assert histogram("1") == (256, 0, 10994)
     assert histogram("L") == (256, 0, 662)
+    assert histogram("LA") == (512, 0, 16384)
+    assert histogram("La") == (512, 0, 16384)
     assert histogram("I") == (256, 0, 662)
     assert histogram("F") == (256, 0, 662)
     assert histogram("P") == (256, 0, 1551)
+    assert histogram("PA") == (512, 0, 16384)
     assert histogram("RGB") == (768, 4, 675)
     assert histogram("RGBA") == (1024, 0, 16384)
     assert histogram("CMYK") == (1024, 0, 16384)

Tests/test_imagecms.py

@@ -690,3 +690,17 @@ def test_cmyk_lab() -> None:
     im = Image.new("CMYK", (1, 1))
     converted_im = im.convert("LAB")
     assert converted_im.getpixel((0, 0)) == (255, 128, 128)
+
+
+def test_deprecation() -> None:
+    profile = ImageCmsProfile(ImageCms.createProfile("sRGB"))
+    with pytest.warns(
+        DeprecationWarning, match="ImageCms.ImageCmsProfile.product_name"
+    ):
+        profile.product_name
+    with pytest.warns(
+        DeprecationWarning, match="ImageCms.ImageCmsProfile.product_info"
+    ):
+        profile.product_info
+    with pytest.raises(AttributeError):
+        profile.this_attribute_does_not_exist

Tests/test_pyroma.py

@@ -9,9 +9,30 @@ from PIL import __version__
 pyroma = pytest.importorskip("pyroma", reason="Pyroma not installed")
 
 
+def map_metadata_keys(metadata):
+    # Convert installed wheel metadata into canonical Core Metadata 2.4 format.
+    # This was a utility method in pyroma 4.3.3; it was removed in 5.0.
+    # This implementation is constructed from the relevant logic from
+    # Pyroma 5.0's `build_metadata()` implementation. This has been submitted
+    # upstream to Pyroma as https://github.com/regebro/pyroma/pull/116,
+    # so it may be possible to simplify this test in future.
+    data = {}
+    for key in set(metadata.keys()):
+        value = metadata.get_all(key)
+        key = pyroma.projectdata.normalize(key)
+
+        if len(value) == 1:
+            value = value[0]
+            if value.strip() == "UNKNOWN":
+                continue
+
+        data[key] = value
+    return data
+
+
 def test_pyroma() -> None:
     # Arrange
-    data = pyroma.projectdata.map_metadata_keys(metadata("Pillow"))
+    data = map_metadata_keys(metadata("Pillow"))
 
     # Act
     rating = pyroma.ratings.rate(data)

docs/deprecations.rst

@@ -52,6 +52,15 @@ another mode before saving::
     im = Image.new("I", (1, 1))
     im.convert("I;16").save("out.png")
 
+ImageCms.ImageCmsProfile.product_name and .product_info
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 12.0.0
+
+``ImageCms.ImageCmsProfile.product_name`` and the corresponding
+``.product_info`` attributes have been deprecated, and will be removed in
+Pillow 13 (2026-10-15). They have been set to ``None`` since Pillow 2.3.0.
+
 Removed features
 ----------------
 

docs/installation/newer-versions.csv

@@ -1,9 +1,10 @@
-Python,3.13,3.12,3.11,3.10,3.9,3.8,3.7,3.6,3.5
-Pillow >= 11,Yes,Yes,Yes,Yes,Yes,,,,
-Pillow 10.1 - 10.4,,Yes,Yes,Yes,Yes,Yes,,,
-Pillow 10.0,,,Yes,Yes,Yes,Yes,,,
-Pillow 9.3 - 9.5,,,Yes,Yes,Yes,Yes,Yes,,
-Pillow 9.0 - 9.2,,,,Yes,Yes,Yes,Yes,,
-Pillow 8.3.2 - 8.4,,,,Yes,Yes,Yes,Yes,Yes,
-Pillow 8.0 - 8.3.1,,,,,Yes,Yes,Yes,Yes,
-Pillow 7.0 - 7.2,,,,,,Yes,Yes,Yes,Yes
+Python,3.14,3.13,3.12,3.11,3.10,3.9,3.8,3.7,3.6,3.5
+Pillow 12,Yes,Yes,Yes,Yes,Yes,,,,,
+Pillow 11,,Yes,Yes,Yes,Yes,Yes,,,,
+Pillow 10.1 - 10.4,,,Yes,Yes,Yes,Yes,Yes,,,
+Pillow 10.0,,,,Yes,Yes,Yes,Yes,,,
+Pillow 9.3 - 9.5,,,,Yes,Yes,Yes,Yes,Yes,,
+Pillow 9.0 - 9.2,,,,,Yes,Yes,Yes,Yes,,
+Pillow 8.3.2 - 8.4,,,,,Yes,Yes,Yes,Yes,Yes,
+Pillow 8.0 - 8.3.1,,,,,,Yes,Yes,Yes,Yes,
+Pillow 7.0 - 7.2,,,,,,,Yes,Yes,Yes,Yes

docs/releasenotes/12.0.0.rst

@@ -110,10 +110,12 @@ vulnerability introduced in FreeType 2.6 (:cve:`2020-15999`).
 Deprecations
 ============
 
-TODO
-^^^^
+ImageCms.ImageCmsProfile.product_name and .product_info
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-TODO
+``ImageCms.ImageCmsProfile.product_name`` and the corresponding
+``.product_info`` attributes have been deprecated, and will be removed in
+Pillow 13 (2026-10-15). They have been set to ``None`` since Pillow 2.3.0.
 
 API changes
 ===========
@@ -134,7 +136,11 @@ TODO
 Other changes
 =============
 
-TODO
-^^^^
+Python 3.14
+^^^^^^^^^^^
 
-TODO
+Pillow 11.3.0 had wheels built against Python 3.14 beta, available as a preview to help
+others prepare for 3.14, and to ensure Pillow could be used immediately at the release
+of 3.14.0 final (2025-10-07, :pep:`745`).
+
+Pillow 12.0.0 now officially supports Python 3.14.

pyproject.toml

@@ -29,6 +29,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Multimedia :: Graphics",
@@ -70,7 +71,7 @@ optional-dependencies.tests = [
   "markdown2",
   "olefile",
   "packaging",
-  "pyroma",
+  "pyroma>=5",
   "pytest",
   "pytest-cov",
   "pytest-timeout",
@@ -209,7 +210,7 @@ lint.isort.required-imports = [
 ]
 
 [tool.pyproject-fmt]
-max_supported_python = "3.13"
+max_supported_python = "3.14"
 
 [tool.pytest.ini_options]
 addopts = "-ra --color=auto"

src/PIL/ImageCms.py

@@ -23,9 +23,10 @@ import operator
 import sys
 from enum import IntEnum, IntFlag
 from functools import reduce
-from typing import Literal, SupportsFloat, SupportsInt, Union
+from typing import Any, Literal, SupportsFloat, SupportsInt, Union
 
 from . import Image
+from ._deprecate import deprecate
 from ._typing import SupportsRead
 
 try:
@@ -233,9 +234,7 @@ class ImageCmsProfile:
             low-level profile object
 
         """
-        self.filename = None
-        self.product_name = None  # profile.product_name
-        self.product_info = None  # profile.product_info
+        self.filename: str | None = None
 
         if isinstance(profile, str):
             if sys.platform == "win32":
@@ -256,6 +255,13 @@ class ImageCmsProfile:
             msg = "Invalid type for Profile"  # type: ignore[unreachable]
             raise TypeError(msg)
 
+    def __getattr__(self, name: str) -> Any:
+        if name in ("product_name", "product_info"):
+            deprecate(f"ImageCms.ImageCmsProfile.{name}", 13)
+            return None
+        msg = f"'{self.__class__.__name__}' object has no attribute '{name}'"
+        raise AttributeError(msg)
+
     def tobytes(self) -> bytes:
         """
         Returns the profile in a format suitable for embedding in

src/libImaging/Histo.c

@@ -132,11 +132,15 @@ ImagingGetHistogram(Imaging im, Imaging imMask, void *minmax) {
                     ImagingSectionEnter(&cookie);
                     for (y = 0; y < im->ysize; y++) {
                         UINT8 *in = (UINT8 *)im->image[y];
-                        for (x = 0; x < im->xsize; x++) {
-                            h->histogram[(*in++)]++;
-                            h->histogram[(*in++) + 256]++;
-                            h->histogram[(*in++) + 512]++;
-                            h->histogram[(*in++) + 768]++;
+                        for (x = 0; x < im->xsize; x++, in += 4) {
+                            h->histogram[*in]++;
+                            if (im->bands == 2) {
+                                h->histogram[*(in + 3) + 256]++;
+                            } else {
+                                h->histogram[*(in + 1) + 256]++;
+                                h->histogram[*(in + 2) + 512]++;
+                                h->histogram[*(in + 3) + 768]++;
+                            }
                         }
                     }
                     ImagingSectionLeave(&cookie);

winbuild/build_prepare.py

@@ -121,7 +121,7 @@ V = {
     "LCMS2": "2.17",
     "LIBAVIF": "1.3.0",
     "LIBIMAGEQUANT": "4.3.4",
-    "LIBPNG": "1.6.49",
+    "LIBPNG": "1.6.50",
     "LIBWEBP": "1.6.0",
     "OPENJPEG": "2.5.3",
     "TIFF": "4.7.0",