Description

ericsnowcurrently

opened on Oct 17, 2024

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Bug report

Bug description:

In #124548 (comment), @ZeroIntensity noted that the various locals of type qidarg_converter_data in _interpqueuesmodule.c are not statically initialized. Whether or not they are initialized to zeros by default is "undefined behavior, ergo depends on the compiler. This could be a problem since the corresponding arg converter func branches on whether or the "label" field is NULL. This may (or may not) be related to the buildbot failures noted in that other issue.

Fixing this will be fairly trivial.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-125667: Statically Initialize the Arg Converter Data Values in _interpqueuesmodule.c #125668
• [3.13] gh-125667: Statically Initialize the Arg Converter Data Values in _interpqueuesmodule.c (gh-125668) #125670

Activity

1. ericsnowcurrently

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   extension-modulesC modules in the Modules dirC modules in the Modules dir

   topic-subinterpreters

   3.13only security fixesonly security fixes

   3.14bugs and security fixesbugs and security fixes

   on Oct 17, 2024
2. ericsnowcurrently

   self-assigned this

   on Oct 17, 2024
3. github-project-automation

   added this to Subinterpreterson Oct 17, 2024
4. github-project-automation

   moved this to Todo in Subinterpreterson Oct 17, 2024
5. ericsnowcurrently

   added a commit that references this issue on Oct 17, 2024

   gh-125667: Statically Initialize the Arg Converter Data Values in _in…

   7cf2dbc
6. miss-islington

   added a commit that references this issue on Oct 17, 2024

   pythongh-125667: Statically Initialize the Arg Converter Data Values …

   70526e7
7. ericsnowcurrently

   added a commit that references this issue on Oct 18, 2024

   [3.13] gh-125667: Statically Initialize the Arg Converter Data Values…

   e57831f
8. ericsnowcurrently

   closed this as completedon Oct 18, 2024
9. github-project-automation

   moved this from Todo to Done in Subinterpreterson Oct 18, 2024
10. ebonnal

    added a commit that references this issue on Jan 12, 2025

    pythongh-125667: Statically Initialize the Arg Converter Data Values …

    5c41fa6

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