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Title: gh-111178: fix UBSan failures in `Modules/_io/*.c` by picnixz · Pull Request #129083 · python/cpython · GitHub

Open Graph Title: gh-111178: fix UBSan failures in `Modules/_io/*.c` by picnixz · Pull Request #129083 · python/cpython

X Title: gh-111178: fix UBSan failures in `Modules/_io/*.c` by picnixz · Pull Request #129083 · python/cpython

Description: Issue: gh-111178

Open Graph Description: Issue: gh-111178

X Description: Issue: gh-111178

Opengraph URL: https://github.com/python/cpython/pull/129083

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