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Implement stack size detection on FreeBSD #159603

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Implement stack size detection on FreeBSD#159603
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OS-freebsdinterpreter-core(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or error

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@vstinner
vstinner
opened on Oct 17, 2026

Currently, Python calls pthread_getattr_np() which is... "not portable", as said in the name :-) FreeBSD has a similar function: pthread_attr_get_np() from <pthread_np.h>. I propose using this function to get the stack size on FreeBSD.

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  1. vstinner
    added
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    OS-freebsd
    on Oct 17, 2026
  2. StanFromIreland
    added
    type-featureA feature request or enhancement
    on Oct 17, 2026
  3. kevinprimeraquecreo-stack
    added this to Project_VKand Project_VKon Oct 18, 2026
  4. github-project-automation
    moved this to Todo in Project_VKon Oct 18, 2026

  5. vstinner commented on Oct 19, 2026

    @vstinner
    vstinner
    on Oct 19, 2026
    MemberAuthor

    Note: I created this issue to solve #159535 regression on FreeBSD.

  6. vstinner
    added
    type-bugAn unexpected behavior, bug, or error
    and removed
    type-featureA feature request or enhancement
    on Oct 19, 2026
  7. vstinner
    added a commit that references this issue on Oct 20, 2026

    gh-159603: Use pthread_attr_get_np() on FreeBSD (#159604)

    71ba39d
  8. vstinner
    closed this as completedon Oct 20, 2026
  9. vstinner
    added 2 commits that reference this issue on Oct 20, 2026

    gh-159603: Call pthread_attr_init() in hardware_stack_limits() (#159857)

    14b43d4

    [3.15] gh-159603: Use pthread_attr_get_np() on FreeBSD (#159604) (#15…

    b62f612
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