4 files changed, 6 insertions, 1 deletions
diff --git a/src/gui/painting/qbrush.cpp b/src/gui/painting/qbrush.cpp
index 670717c5f1..d6eb8d8a48 100644
--- a/src/gui/painting/qbrush.cpp
+++ b/src/gui/painting/qbrush.cpp
@@ -1163,6 +1163,7 @@ QDataStream &operator>>(QDataStream &s, QBrush &b)
             QColor c;
 
             s >> numStops;
+            stops.reserve(numStops);
             for (quint32 i = 0; i < numStops; ++i) {
                 s >> n >> c;
                 stops << QPair<qreal, QColor>(n, c);
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index c17ea9c878..f9cabe840d 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -7497,6 +7497,7 @@ start_lengthVariant:
 
     if (engine.option.tabs().isEmpty() && ta) {
         QList<qreal> tabs;
+        tabs.reserve(tabarraylen);
         for (int i = 0; i < tabarraylen; i++)
             tabs.append(qreal(ta[i]));
         engine.option.setTabArray(tabs);
diff --git a/src/gui/painting/qpdf.cpp b/src/gui/painting/qpdf.cpp
index 6ea0800538..1389112462 100644
--- a/src/gui/painting/qpdf.cpp
+++ b/src/gui/painting/qpdf.cpp
@@ -1952,7 +1952,9 @@ int QPdfEnginePrivate::createShadingFunction(const QGradient *gradient, int from
         stops.append(QGradientStop(1, stops.at(stops.size() - 1).second));
 
     QVector<int> functions;
-    for (int i = 0; i < stops.size() - 1; ++i) {
+    const int numStops = stops.size();
+    functions.reserve(numStops - 1);
+    for (int i = 0; i < numStops - 1; ++i) {
         int f = addXrefEntry(-1);
         QByteArray data;
         QPdf::ByteStream s(&data);
diff --git a/src/gui/painting/qpen.cpp b/src/gui/painting/qpen.cpp
index 6263d18b01..073d254b49 100644
--- a/src/gui/painting/qpen.cpp
+++ b/src/gui/painting/qpen.cpp
@@ -980,6 +980,7 @@ QDataStream &operator>>(QDataStream &s, QPen &p)
             quint32 numDashes;
             s >> numDashes;
             double dash;
+            dashPattern.reserve(numDashes);
             for (quint32 i = 0; i < numDashes; ++i) {
                 s >> dash;
                 dashPattern << dash;