https://bugs.kde.org/show_bug.cgi?id=508778

            Bug ID: 508778
           Summary: syscall-wrapper waitid warns about infop=null
    Classification: Developer tools
           Product: valgrind
      Version First 3.25 GIT
       Reported In:
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: memcheck
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Created attachment 184480
  --> https://bugs.kde.org/attachment.cgi?id=184480&action=edit
syscall-wrapper waitid handles infop=null correctly

The syscall wrapper for waitid on linux warns about infop being null.
This differs to the linux-kernel.

it is e.g. used by Qt:
https://github.com/qt/qtbase/blob/e17798560b107b7abd5f2cf472d942e8ac4213ff/src/3rdparty/forkfd/forkfd_linux.c#L128

reports can be found in multiple locations
e.g. https://lists.lyx.org/pipermail/lyx-devel/2024-June/012624.html

The attached patch is based on top of the one from
https://bugs.kde.org/show_bug.cgi?id=508777

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