[3.13] gh-134908: Protect textiowrapper_iternext with critical section (gh-134910)
#135040
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This was referenced Jun 2, 2025
…l section (pythongh-134910) The `textiowrapper_iternext` function called `_textiowrapper_writeflush`, but did not use a critical section, making it racy in free-threaded builds. (cherry picked from commit 44fb7c3) Co-authored-by: Duane Griffin <duaneg@dghda.com>
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The
textiowrapper_iternextfunction called_textiowrapper_writeflush, but did not use a critical section, making it racy in free-threaded builds.(cherry picked from commit 44fb7c3)
textiowrapper_iternextand writing to a text file simultaneously in ft build #134908