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  1. Qt
  2. QTBUG-112899

QMacStyle setupSlider leaks memory painting QSlider

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Details

    • Bug
    • Resolution: Fixed
    • P2: Important
    • 6.5.1, 6.6.0
    • 6.4.3, 6.5.0
    • QPA
    • None
    • macOS
    • 4db9fdf58 (dev), 531bb7785 (6.5)

    Description

      Leak backtraces:

      0 libsystem_malloc.dylib malloc_zone_calloc
      1 libsystem_malloc.dylib calloc
      2 libobjc.A.dylib class_createInstance
      3 libobjc.A.dylib +[NSObject allocWithZone:]
      4 libobjc.A.dylib +[NSObject new]
      5 AppKit -[NSControl _commonEarlyInit]
      6 AppKit -[NSControl initWithFrame:]
      7 AppKit -[NSSlider initWithFrame:]
      8 libqmacstyle.dylib setupSlider(NSSlider*, QStyleOptionSlider const*)
      9 libqmacstyle.dylib QMacStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const
      10 QtWidgets QSlider::paintEvent(QPaintEvent*)

      0 libsystem_malloc.dylib malloc_zone_calloc
      1 libsystem_malloc.dylib calloc
      2 libobjc.A.dylib class_createInstance
      3 libobjc.A.dylib +[NSObject allocWithZone:]
      4 libobjc.A.dylib +[NSObject new]
      5 AppKit -[NSControl _commonEarlyInit]
      6 AppKit -[NSControl initWithFrame:]
      7 AppKit -[NSSlider initWithFrame:]
      8 libqmacstyle.dylib QMacStylePrivate::cocoaControl(QMacStylePrivate::CocoaControl) const
      9 libqmacstyle.dylib QMacStyle::drawComplexControl(QStyle::ComplexControl, QStyleOptionComplex const*, QPainter*, QWidget const*) const
      10 QtWidgets QSlider::paintEvent(QPaintEvent*)

      This looks like it is probably the same problem that leaked QScroller in QTBUG-60004 where initWithFrame is being called on an object that is already initialised.

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        Issue Links

          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-98093 QSlider is broken in MacOS Monterey

          • 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
          For Gerrit Dashboard: QTBUG-112899
          # Subject Branch Project Status CR V
          474373,3 macOS: Avoid memory leak when using NSSlider for style drawing dev qt/qtbase Status: MERGED +2 0
          474773,2 macOS: Avoid memory leak when using NSSlider for style drawing 6.5 qt/qtbase Status: MERGED +2 0

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            People

              vestbo Tor Arne Vestbø
              csnover C S
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              Dates

                Created:
                Updated:
                Resolved:

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