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Ensure duplicated file pointer is closed #5946

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merged 1 commit into from
Jan 10, 2022
Merged

Ensure duplicated file pointer is closed #5946

merged 1 commit into from
Jan 10, 2022

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radarhere
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Resolves #5936. Ensures that the file pointer duplicated in TiffImagePlugin is closed, rather than counting on libtiff to do it.

Pillow/src/PIL/TiffImagePlugin.py

Lines 1186 to 1188 in eff6c34

# libtiff closes the file descriptor, so pass in a dup.
try:
fp = hasattr(self.fp, "fileno") and os.dup(self.fp.fileno())

I haven't added a test for this, since the issue involves hitting the limit on the number of open files.

@radarhere radarhere mentioned this pull request Jan 9, 2022
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@hugovk hugovk merged commit ac7f42c into python-pillow:main Jan 10, 2022
@radarhere radarhere deleted the file_pointer branch January 10, 2022 05:39
@radarhere radarhere mentioned this pull request Mar 5, 2023
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radarhere added a commit to radarhere/Pillow that referenced this pull request May 21, 2023
@radarhere
Removed fix from python-pillow#5946
716e0e4
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OSError: [Errno 24] Too many open files for image.save for tiff images
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