diff -r b72c6db6890b -r 5dc02b23752f src/corelib/tools/qset.h
--- a/src/corelib/tools/qset.h	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/corelib/tools/qset.h	Tue Jul 06 15:10:48 2010 +0300
@@ -291,6 +291,7 @@
 Q_OUTOFLINE_TEMPLATE QList<T> QSet<T>::toList() const
 {
     QList<T> result;
+    result.reserve(size());
     typename QSet<T>::const_iterator i = constBegin();
     while (i != constEnd()) {
         result.append(*i);