1 files changed, 123 insertions, 0 deletions
diff --git a/tests/benchmarks/corelib/io/qiodevice/tst_bench_qiodevice.cpp b/tests/benchmarks/corelib/io/qiodevice/tst_bench_qiodevice.cpp
new file mode 100644
index 0000000000..47e616b409
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+++ b/tests/benchmarks/corelib/io/qiodevice/tst_bench_qiodevice.cpp
@@ -0,0 +1,123 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <QDebug>
+#include <QIODevice>
+#include <QFile>
+#include <QString>
+
+#include <qtest.h>
+
+class tst_QIODevice : public QObject
+{
+    Q_OBJECT
+private slots:
+    void read_old();
+    void read_old_data() { read_data(); }
+    void peekAndRead();
+    void peekAndRead_data() { read_data(); }
+    //void read_new();
+    //void read_new_data() { read_data(); }
+private:
+    void read_data();
+};
+
+
+void tst_QIODevice::read_data()
+{
+    QTest::addColumn<qint64>("size");
+    QTest::newRow("10k")      << qint64(10 * 1024);
+    QTest::newRow("100k")     << qint64(100 * 1024);
+    QTest::newRow("1000k")    << qint64(1000 * 1024);
+    QTest::newRow("10000k")   << qint64(10000 * 1024);
+    QTest::newRow("100000k")  << qint64(100000 * 1024);
+    QTest::newRow("1000000k") << qint64(1000000 * 1024);
+}
+
+void tst_QIODevice::read_old()
+{
+    QFETCH(qint64, size);
+
+    QString name = "tmp" + QString::number(size);
+
+    {
+        QFile file(name);
+        file.open(QIODevice::WriteOnly);
+        file.seek(size);
+        file.write("x", 1);
+        file.close();
+    }
+
+    QBENCHMARK {
+        QFile file(name);
+        file.open(QIODevice::ReadOnly);
+        QByteArray ba;
+        qint64 s = size - 1024;
+        file.seek(512);
+        ba = file.read(s);  // crash happens during this read / assignment operation
+    }
+
+    {
+        QFile file(name);
+        file.remove();
+    }
+}
+
+void tst_QIODevice::peekAndRead()
+{
+    QFETCH(qint64, size);
+
+    QString name = "tmp" + QString::number(size);
+
+    {
+        QFile file(name);
+        file.open(QIODevice::WriteOnly);
+        file.seek(size);
+        file.write("x", 1);
+        file.close();
+    }
+
+    QBENCHMARK {
+        QFile file(name);
+        file.open(QIODevice::ReadOnly);
+
+        QByteArray ba(size / 1024, Qt::Uninitialized);
+        while (!file.atEnd()) {
+            file.peek(ba.data(), ba.size());
+            file.read(ba.data(), ba.size());
+        }
+    }
+
+    {
+        QFile file(name);
+        file.remove();
+    }
+}
+
+QTEST_MAIN(tst_QIODevice)
+
+#include "tst_bench_qiodevice.moc"