From 93de0b0e3d11d761bcfd94283dc6b5e86c12d87f Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Date: Mon, 14 Dec 2015 09:44:40 +0100
Subject: Fix crash when grabbing a QQuickWidget before it is shown.

Do not access null share contexts.

Task-number: QTBUG-49929
Change-Id: I1c88563df71dd6c5d186b6f2ae147614fcc6ded9
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
---
 tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'tests')

diff --git a/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp b/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
index 79ff18011d..bec3de524c 100644
--- a/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
+++ b/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
@@ -59,6 +59,7 @@ private slots:
     void engine();
     void readback();
     void renderingSignals();
+    void grabBeforeShow();
 };
 
 
@@ -297,6 +298,14 @@ void tst_qquickwidget::renderingSignals()
     QTRY_VERIFY(afterRenderingSpy.size() > 0);
 }
 
+// QTBUG-49929, verify that Qt Designer grabbing the contents before drag
+// does not crash due to missing GL contexts or similar.
+void tst_qquickwidget::grabBeforeShow()
+{
+    QQuickWidget widget;
+    QVERIFY(!widget.grab().isNull());
+}
+
 QTEST_MAIN(tst_qquickwidget)
 
 #include "tst_qquickwidget.moc"
-- 
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