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gh-137571: Fix UnboundLocalError in gzip._GzipReader.read() - #137572
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maurycy wants to merge 2 commits into
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gh-137571: Fix UnboundLocalError in gzip._GzipReader.read()#137572maurycy wants to merge 2 commits into
UnboundLocalError in gzip._GzipReader.read()#137572maurycy wants to merge 2 commits into
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UnboundLocalError in gzip._GzipReader.read()UnboundLocalError in gzip._GzipReader.read()
serhiy-storchaka
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This may change the behavior. Before, the error was raised only if both uncompress and buf are empty. Now it is raised without an attempt to decompress.
maurycy
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Mar 23, 2026
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6 months passed; stale. |
serhiy-storchaka
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May 22, 2026
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maurycy
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May 22, 2026
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@serhiy-storchaka Thank you for picking this up. You're right, and #150222 is a cleaner fix. Apologies for letting this go on my end. |
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Much more detailed description, including the reproduction steps, in the issue.
I'm not 100% sure about the fix. The easiest is just a sentinel (
buf = None).gzip._GzipReader.read()with sometimes uninitialized variable #137571