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modsupport.c: Missing va_end in _abiinfo_raise #146386

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modsupport.c: Missing va_end in _abiinfo_raise#146386
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interpreter-core(Objects, Python, Grammar, and Parser dirs)type-bugAn unexpected behavior, bug, or error

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@A0su
A0su
opened on Mar 24, 2026

Bug report

Bug description:

Bug Report

modsupport.c: Missing va_end in _abiinfo_raise

va_start(vargs, format) at line 689 but va_end(vargs) never called on any path. UB per C99 7.15.1.

This is a sub-issue of #146102 with original gist details

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

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Activity

  1. A0su
    added
    type-bugAn unexpected behavior, bug, or error
    on Mar 24, 2026
  2. picnixz
    added
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    3.15bugs and security fixes
    and removed
    3.15bugs and security fixes
    on Mar 24, 2026
  3. devdanzin
    added a parent issue on Mar 24, 2026
  4. kumaraditya303
    added a commit that references this issue on Mar 25, 2026

    gh-146386: fix missing `va_end` in `_abiinfo_raise` in `modsupport.c` (…

    04bd543
  5. kumaraditya303
    closed this as completedon Mar 25, 2026
  6. clin1234
    added a commit that references this issue on Apr 16, 2026

    pythongh-146386: fix missing `va_end` in `_abiinfo_raise` in `modsupp…

    3dcffa3
  7. ljfp
    added a commit that references this issue on Apr 25, 2026

    pythongh-146386: fix missing `va_end` in `_abiinfo_raise` in `modsupp…

    800514c
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