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  1. Qt
  2. QTBUG-101891

null pointer subtraction warnings with Xcode 13.3 toolchain

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Details

    • Bug
    • Resolution: Duplicate
    • P2: Important
    • None
    • 5.15, 6.2, 6.3
    • Quick: Core Declarative QML
    • None

    Description

      With the Xcode 13.3 toolchain there seems to be a lot of warnings like this, both with Qt 5 and Qt 6:

      qtdeclarative/src/qml/qml/ftw/qintrusivelist_p.h:248:69: warning: performing pointer subtraction with a null pointer may have undefined behavior [-Wnull-pointer-subtraction]
    return (N *)((char *)node - ((char *)&(((N *)nullptr)->*member) - (char *)nullptr));
                                                                    ^ ~~~~~~~~~~~~~~~

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-99020 -Wnull-pointer-subtraction when compiling qtdeclarative/src/qml/qml/ftw/qintrusivelist_p.h:244:69

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Activity

            People

              qt.team.quick.subscriptions Qt Quick and Widgets Team
              vuokko Juha Vuolle
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              Dates

                Created:
                Updated:
                Resolved: