Don't overflow the unreferenced cost counter

QTBUG-13345
(cherry picked from commit b6d47ea4872e188d8da6886cb1922f1a89245825)

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp b/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
index 6b3622495e..b20d8ec023 100644
--- a/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
+++ b/tests/auto/declarative/qdeclarativepixmapcache/tst_qdeclarativepixmapcache.cpp
@@ -42,6 +42,7 @@
 #include <QtTest/QtTest>
 #include <private/qdeclarativepixmapcache_p.h>
 #include <QtDeclarative/qdeclarativeengine.h>
+#include <QtDeclarative/qdeclarativeimageprovider.h>
 #include <QNetworkReply>
 #include "testhttpserver.h"
 #include "../../../shared/util.h"
@@ -72,6 +73,7 @@ private slots:
     void parallel_data();
     void massive();
     void cancelcrash();
+    void shrinkcache();
 
 private:
     QDeclarativeEngine engine;
@@ -326,6 +328,31 @@ void tst_qdeclarativepixmapcache::cancelcrash()
     }
 }
 
+class MyPixmapProvider : public QDeclarativeImageProvider
+{
+public:
+    MyPixmapProvider()
+    : QDeclarativeImageProvider(Pixmap) {}
+
+    virtual QPixmap requestPixmap(const QString &d, QSize *, const QSize &) {
+        QPixmap pix(800, 600);
+        pix.fill(Qt::red);
+        return pix;
+    }
+};
+
+// QTBUG-13345
+void tst_qdeclarativepixmapcache::shrinkcache()
+{
+    QDeclarativeEngine engine;
+    engine.addImageProvider(QLatin1String("mypixmaps"), new MyPixmapProvider);
+
+    for (int ii = 0; ii < 4000; ++ii) {
+        QUrl url("image://mypixmaps/" + QString::number(ii));
+        QDeclarativePixmap p(&engine, url);
+    }
+}
+
 QTEST_MAIN(tst_qdeclarativepixmapcache)
 
 #include "tst_qdeclarativepixmapcache.moc"