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GeezerVison is showing github.com — [3.15] gh-153291: Fix data race in readline.get_completer() and get_pre_input_hook() (gh-153362) by miss-islington · Pull Request #154418 · python/cpython

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@miss-islington

@miss-islington miss-islington commented Jul 22, 2026 •
edited by bedevere-app Bot
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The setters store these hooks while holding the module critical section
(via set_hook's Py_XSETREF), but the getters read and Py_NewRef the same
fields without it. Annotate both getters with @critical_section, matching
the other readline functions (gh-126895).
(cherry picked from commit 90b6a79)

Co-authored-by: Harjoth Khara [email protected]
Co-authored-by: Neil Schemenauer [email protected]

  • Issue: Data race in readline.get_completer() reads state->completer without the critical section #153291

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@harjothkhara @nascheme @miss-islington
pythongh-153291: Fix data race in readline.get_completer() and get_pr…
221355c
…e_input_hook() (pythongh-153362)

The setters store these hooks while holding the module critical section
(via set_hook's Py_XSETREF), but the getters read and Py_NewRef the same
fields without it. Annotate both getters with @critical_section, matching
the other readline functions (pythongh-126895).
(cherry picked from commit 90b6a79)

Co-authored-by: Harjoth Khara <[email protected]>
Co-authored-by: Neil Schemenauer <[email protected]>
@bedevere-app bedevere-app Bot mentioned this pull request Jul 22, 2026
Data race in readline.get_completer() reads state->completer without the critical section #153291
Closed
@bedevere-app bedevere-app Bot added the topic-free-threading label Jul 22, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jul 22, 2026
gh-153291: Fix data race in readline.get_completer() and get_pre_input_hook() #153362
Merged
@bedevere-app bedevere-app Bot added the awaiting review label Jul 22, 2026
@nascheme
nascheme merged commit 7dca47d into python:3.15 Jul 22, 2026
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@bedevere-app bedevere-app Bot removed the awaiting review label Jul 22, 2026
@miss-islington
miss-islington deleted the backport-90b6a79-3.15 branch July 22, 2026 17:54
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3 participants

@miss-islington @nascheme @harjothkhara
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