3 files changed, 11 insertions, 3 deletions
diff --git a/src/gui/itemviews/qlistview.cpp b/src/gui/itemviews/qlistview.cpp
index 1869093..76d7642 100644
--- a/src/gui/itemviews/qlistview.cpp
+++ b/src/gui/itemviews/qlistview.cpp
@@ -2782,7 +2782,10 @@ QPoint QIconModeViewBase::initDynamicLayout(const QListViewLayoutInfo &info)
         y = info.bounds.y() + info.spacing;
         items.reserve(rowCount() - hiddenCount());
     } else {
-        const QListViewItem item = items.at(info.first - 1);
+        int idx = info.first - 1;
+        while (idx > 0 && !items.at(idx).isValid())
+            --idx;
+        const QListViewItem &item = items.at(idx);
         x = item.x;
         y = item.y;
         if (info.flow == QListView::LeftToRight)
@@ -2913,6 +2916,8 @@ void QIconModeViewBase::doDynamicLayout(const QListViewLayoutInfo &info)
         else
             contentsSize.rwidth() += info.spacing;
     }
+    if (rect.size().isEmpty())
+        return;
     // resize tree
     int insertFrom = info.first;
     if (done || info.first == 0) {
diff --git a/src/gui/text/qfontengine_s60.cpp b/src/gui/text/qfontengine_s60.cpp
index 74ef646..52a1fe7 100644
--- a/src/gui/text/qfontengine_s60.cpp
+++ b/src/gui/text/qfontengine_s60.cpp
@@ -374,7 +374,10 @@ glyph_metrics_t QFontEngineS60::boundingBox(glyph_t glyph)
 
 QFixed QFontEngineS60::ascent() const
 {
-    return m_originalFont->FontMaxAscent();
+    // Workaround for QTBUG-8013
+    // Stroke based fonts may return an incorrect FontMaxAscent of 0.
+    const QFixed ascent = m_originalFont->FontMaxAscent();
+    return (ascent > 0) ? ascent : QFixed::fromReal(m_originalFontSizeInPixels) - descent();
 }
 
 QFixed QFontEngineS60::descent() const
diff --git a/src/multimedia/video/qvideosurfaceformat.cpp b/src/multimedia/video/qvideosurfaceformat.cpp
index 1fc13a6..3afbdc9 100644
--- a/src/multimedia/video/qvideosurfaceformat.cpp
+++ b/src/multimedia/video/qvideosurfaceformat.cpp
@@ -252,7 +252,7 @@ QVideoSurfaceFormat::~QVideoSurfaceFormat()
 
 bool QVideoSurfaceFormat::isValid() const
 {
-    return d->pixelFormat == QVideoFrame::Format_Invalid && d->frameSize.isValid();
+    return d->pixelFormat != QVideoFrame::Format_Invalid && d->frameSize.isValid();
 }
 
 /*!