Keep new IFDs when converting EXIF to bytes

radarhere · Dec 28, 2024 · 9368a86 · 9368a86
1 parent 1a79d10
commit 9368a86
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diff --git a/Tests/test_image.py b/Tests/test_image.py
@@ -793,6 +793,10 @@ def test_empty_get_ifd(self) -> None:
         ifd[36864] = b"0220"
         assert exif.get_ifd(0x8769) == {36864: b"0220"}
 
+        reloaded_exif = Image.Exif()
+        reloaded_exif.load(exif.tobytes())
+        assert reloaded_exif.get_ifd(0x8769) == {36864: b"0220"}
+
     @mark_if_feature_version(
         pytest.mark.valgrind_known_error, "libjpeg_turbo", "2.0", reason="Known Failing"
     )

diff --git a/src/PIL/Image.py b/src/PIL/Image.py
@@ -4023,6 +4023,9 @@ def tobytes(self, offset: int = 8) -> bytes:
 
         head = self._get_head()
         ifd = TiffImagePlugin.ImageFileDirectory_v2(ifh=head)
+        for tag, ifd_dict in self._ifds.items():
+            if tag not in self:
+                ifd[tag] = ifd_dict
         for tag, value in self.items():
             if tag in [
                 ExifTags.IFD.Exif,