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[3.14] gh-132631: Fix "I/O operation on closed file" when parsing JSON Lines file (GH-132632) by miss-islington · Pull Request #148921 · python/cpython · GitHub

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[3.14] gh-132631: Fix "I/O operation on closed file" when parsing JSON Lines file (GH-132632) - #148921

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hugovk merged 1 commit into
python:3.14from
miss-islington:backport-42d645a-3.14
Apr 23, 2026
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[3.14] gh-132631: Fix "I/O operation on closed file" when parsing JSON Lines file (GH-132632)#148921
hugovk merged 1 commit into
python:3.14from
miss-islington:backport-42d645a-3.14

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miss-islington commented Apr 23, 2026
edited by bedevere-app Bot
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(cherry picked from commit 42d645a)

Co-authored-by: Hugo van Kemenade 1324225+hugovk@users.noreply.github.com
Co-authored-by: Brian Schubert brianm.schubert@gmail.com

… Lines file (pythonGH-132632)

(cherry picked from commit 42d645a)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Brian Schubert <brianm.schubert@gmail.com>

hugovk commented Apr 23, 2026

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@StanFromIreland The fuzzer is failing, what do we need to do?

BAD BUILD: /tmp/not-out/tmpp_w4bm86/fuzzer-binascii seems to have either startup crash or exit:
sysctl: setting key "vm.mmap_rnd_bits", ignoring: Read-only file system
/tmp/not-out/tmpp_w4bm86/fuzzer-binascii -- -rss_limit_mb=2560 -timeout=25 -seed=1337 -runs=4 < /dev/null
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'fuzzeddataprovider'

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Pinging me was a good start ;-)

I know the reason straight away.

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I wrote python/library-fuzzers#51 to revert the addition of the broken fuzzer while we wait on the OSS-Fuzz team to merge my fix.

hugovk commented Apr 23, 2026

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Thank you!

hugovk merged commit 31ba91a into python:3.14 Apr 23, 2026
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