QResourceFileEngine: fix map() for compressed files

We were returning a pointer to the compressed data and comparing to the
compressed data size.

Change-Id: I343f2beed55440a7ac0bfffd1563232d557c9427
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: hjk <hjk@qt.io>

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/auto/corelib/io/qresourceengine/tst_qresourceengine.cpp b/tests/auto/corelib/io/qresourceengine/tst_qresourceengine.cpp
index cf1d249f54..6461e6274f 100644
--- a/tests/auto/corelib/io/qresourceengine/tst_qresourceengine.cpp
+++ b/tests/auto/corelib/io/qresourceengine/tst_qresourceengine.cpp
@@ -404,6 +404,12 @@ void tst_QResourceEngine::checkStructure()
 
         // check contents
         QCOMPARE(file.readAll(), contents);
+
+        // check memory map too
+        uchar *ptr = file.map(0, file.size(), QFile::MapPrivateOption);
+        QVERIFY2(ptr, qPrintable(file.errorString()));
+        QByteArray ba = QByteArray::fromRawData(reinterpret_cast<const char *>(ptr), file.size());
+        QCOMPARE(ba, contents);
     }
     QLocale::setDefault(QLocale::system());
 }