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  1. Qt
  2. QTBUG-24869

Use of MNG with a LOOP block causes memory leak in AnimatedImage QML element

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Details

    • Bug
    • Resolution: Unresolved
    • P4: Low
    • None
    • 4.7.3, 4.8.0, 5.6.2, 5.8.0, 5.11.2
    • Image formats
    • None
    • Windows 7 64bit with Qt 4.7.3 (MSVC2008), QtQuick 1.0
      Windows 7 64bit with Qt 4.8.0 (MSVC2008), QtQuick 1.1

    Description

      If a MNG file created in 'PNG MNG ConstructionSet' (http://www.mindworkshop.com/pngpro.html) contains a LOOP block (logo6.mng) and is used in a AnimatedImage QML, the resulting application will leak memory at the end of each loop iteration. If however, the MNG file uses the TERM block, which loops at the end of the iteration (see FiC_logo.mng), then the leak is avoided.

      Attachments

        1. FiC_logo.mng
          567 kB
        2. logo6.mng
          567 kB
        3. memleak.qml
          0.4 kB

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-28844 Memory leak when using AnimatedImage

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-46619 Growing memory when AnimatedImage is playing

          • P4: Low - Would be nice to fix, but it's not very important.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-63439 Crash and memory leak in QQuickAnimatedImage

          • 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.
          • Open

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-55808 AnimatedImage Memory occupancy

          • 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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-53937 AnimatedSprite source change causes infinite loop in QQuickSpriteEngine::assembledImage()

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Activity

            People

              qt.team.quick.subscriptions Qt Quick and Widgets Team
              dhellier David Hellier
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              Dates

                Created:
                Updated: