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Title: Incorrect implementation of `truncate` in `test_free_threading` for IO · Issue #138360 · python/cpython · GitHub

Open Graph Title: Incorrect implementation of `truncate` in `test_free_threading` for IO · Issue #138360 · python/cpython

X Title: Incorrect implementation of `truncate` in `test_free_threading` for IO · Issue #138360 · python/cpython

Description: Bug report Bug description: def truncate(barrier, b, *ignore): barrier.wait() try: b.truncate(0) except: BufferError # ignore exported buffer should be def truncate(barrier, b, *ignore): barrier.wait() try: b.truncate(0) except BufferErr...

Open Graph Description: Bug report Bug description: def truncate(barrier, b, *ignore): barrier.wait() try: b.truncate(0) except: BufferError # ignore exported buffer should be def truncate(barrier, b, *ignore): barrier.wa...

X Description: Bug report Bug description: def truncate(barrier, b, *ignore): barrier.wait() try: b.truncate(0) except: BufferError # ignore exported buffer should be def truncate(barrier, b, *ignore): barrier.wa...

Opengraph URL: https://github.com/python/cpython/issues/138360

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og:image:altBug report Bug description: def truncate(barrier, b, *ignore): barrier.wait() try: b.truncate(0) except: BufferError # ignore exported buffer should be def truncate(barrier, b, *ignore): barrier.wa...
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Incorrect implementation of truncate in test_free_threading for IOhttps://github.com/python/cpython/issues/138360#top
testsTests in the Lib/test dirhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22tests%22
topic-free-threadinghttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22topic-free-threading%22
type-bugAn unexpected behavior, bug, or errorhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22type-bug%22
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on Sep 1, 2025https://github.com/python/cpython/issues/138360#issue-3373614809
gh-138360: Fix test_free_threading for IO objects #138359https://github.com/python/cpython/pull/138359
testsTests in the Lib/test dirhttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22tests%22
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