doo.diff

diff --git i/src/gui/text/qfontengine.cpp w/src/gui/text/qfontengine.cpp
index 0725ca4..83e64a5 100644
--- i/src/gui/text/qfontengine.cpp
+++ w/src/gui/text/qfontengine.cpp
@@ -1355,6 +1355,28 @@ QFixed QFontEngine::lastRightBearing(const QGlyphLayout &glyphs, bool round)
     return 0;
 }

+
+QFontEngine::GlyphCacheEntry::GlyphCacheEntry()
+    : context(0)
+{
+}
+
+QFontEngine::GlyphCacheEntry::GlyphCacheEntry(const GlyphCacheEntry &o)
+    : context(o.context), cache(o.cache)
+{
+}
+
+QFontEngine::GlyphCacheEntry::~GlyphCacheEntry()
+{
+}
+
+QFontEngine::GlyphCacheEntry &QFontEngine::GlyphCacheEntry::operator=(const GlyphCacheEntry &o)
+{
+    context = o.context;
+    cache = o.cache;
+    return *this;
+}
+
 // ------------------------------------------------------------------
 // The box font engine
 // ------------------------------------------------------------------
diff --git i/src/gui/text/qfontengine_p.h w/src/gui/text/qfontengine_p.h
index ab279fb..0bfb9e7 100644
--- i/src/gui/text/qfontengine_p.h
+++ w/src/gui/text/qfontengine_p.h
@@ -312,6 +312,12 @@ protected:

 private:
     struct GlyphCacheEntry {
+        GlyphCacheEntry();
+        GlyphCacheEntry(const GlyphCacheEntry &);
+        ~GlyphCacheEntry();
+
+        GlyphCacheEntry &operator=(const GlyphCacheEntry &);
+
         const void *context;
         QExplicitlySharedDataPointer<QFontEngineGlyphCache> cache;
         bool operator==(const GlyphCacheEntry &other) const { return context == other.context && cache == other.cache; }