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  1. Qt
  2. QTBUG-35927

Windows: QPainter::drawImage crashes when certain floating points used in translate() and drawImage()

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    Description

      Crash happens in qt_scale_image_32bit to blender.write().

      QImage src(532,519,QImage::Format_ARGB32_Premultiplied);
QImage dest(1000,1000,QImage::Format_ARGB32_Premultiplied);
QPainter painter1(&dest);
painter1.setTransform(QTransform(1.25, 0, 0, 1.25, 15.900000000000034, 72.749999999999986));
painter1.drawImage(QRectF(-2.6, -2.6, 425.6, 415.20000000000005), src, QRectF(0,0,532,519));

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        1. qtbug35927.zip
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        2. qtbug35927_diag.patch
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        3. qtbug35927_valgrind.log
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        4. qtbug35927_purify.tasks
          62 kB
        5. qtbug35927_purify.txt
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        6. qtbug35927.log.gz
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        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-65387 QPainter::drawPixmap() can crash in qdrawhelper_sse2

          • 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

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              laknoll Lars Knoll
              qtcomsupport Qt Support
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              Dates

                Created:
                Updated:
                Resolved: