QPainterPath: detach and reset before streaming in

Otherwise we end up appending and modifying the shared object.

Pick-to: 5.15 6.5 6.6 6.7
Task-number: QTBUG-122704
Change-Id: I01ec3c774d9943adb903fffd17b692c2e6d53e97
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/auto/gui/painting/qpainterpath/tst_qpainterpath.cpp b/tests/auto/gui/painting/qpainterpath/tst_qpainterpath.cpp
index 89631a7f28..c00dc3a78a 100644
--- a/tests/auto/gui/painting/qpainterpath/tst_qpainterpath.cpp
+++ b/tests/auto/gui/painting/qpainterpath/tst_qpainterpath.cpp
@@ -765,6 +765,21 @@ void tst_QPainterPath::testOperatorDatastream()
     }
 
     QCOMPARE(other, path);
+
+    // Check reset & detach
+    QPainterPath p3;
+    p3.lineTo(1, 1);
+    QCOMPARE(p3.elementCount(), 2);
+    QPainterPath p4 = p3;
+    QCOMPARE(p4.elementCount(), 2);
+    {
+        QFile data(tempDir.path() + "/data");
+        QVERIFY(data.open(QFile::ReadOnly));
+        QDataStream stream(&data);
+        stream >> p3;
+    }
+    QCOMPARE(p3.elementCount(), path.elementCount());
+    QCOMPARE(p4.elementCount(), 2);
 }
 
 void tst_QPainterPath::closing()