2 files changed, 11 insertions, 3 deletions

diff --git a/src/script/api/qscriptengine.cpp b/src/script/api/qscriptengine.cpp
index 98a24d0567..d2e96d1e1e 100644
--- a/src/script/api/qscriptengine.cpp
+++ b/src/script/api/qscriptengine.cpp
@@ -844,7 +844,7 @@ static QScriptValue __setupPackage__(QScriptContext *ctx, QScriptEngine *eng)
 } // namespace QScript
 
 QScriptEnginePrivate::QScriptEnginePrivate()
-    : registeredScriptValues(0), freeScriptValues(0),
+    : registeredScriptValues(0), freeScriptValues(0), freeScriptValuesCount(0),
       registeredScriptStrings(0), inEval(false)
 {
     qMetaTypeId<QScriptValue>();
diff --git a/src/script/api/qscriptengine_p.h b/src/script/api/qscriptengine_p.h
index 79294fea2a..d0d020abd7 100644
--- a/src/script/api/qscriptengine_p.h
+++ b/src/script/api/qscriptengine_p.h
@@ -354,6 +354,8 @@ public:
     int agentLineNumber;
     QScriptValuePrivate *registeredScriptValues;
     QScriptValuePrivate *freeScriptValues;
+    static const int maxFreeScriptValues = 256;
+    int freeScriptValuesCount;
     QScriptStringPrivate *registeredScriptStrings;
     QHash<int, QScriptTypeInfo*> m_typeInfos;
     int processEventsInterval;
@@ -521,6 +523,7 @@ inline QScriptValuePrivate *QScriptEnginePrivate::allocateScriptValuePrivate(siz
     if (freeScriptValues) {
         QScriptValuePrivate *p = freeScriptValues;
         freeScriptValues = p->next;
+        --freeScriptValuesCount;
         return p;
     }
     return reinterpret_cast<QScriptValuePrivate*>(qMalloc(size));
@@ -528,8 +531,13 @@ inline QScriptValuePrivate *QScriptEnginePrivate::allocateScriptValuePrivate(siz
 
 inline void QScriptEnginePrivate::freeScriptValuePrivate(QScriptValuePrivate *p)
 {
-    p->next = freeScriptValues;
-    freeScriptValues = p;
+    if (freeScriptValuesCount < maxFreeScriptValues) {
+        p->next = freeScriptValues;
+        freeScriptValues = p;
+        ++freeScriptValuesCount;
+    } else {
+        qFree(p);
+    }
 }
 
 inline void QScriptEnginePrivate::registerScriptValue(QScriptValuePrivate *value)