Merge remote-tracking branch 'origin/4.7' into qt-master-from-4.7

Conflicts:
	src/gui/text/qfontengine_mac.mm
	src/opengl/qpixmapdata_gl.cpp
	src/opengl/qwindowsurface_gl.cpp
	src/s60installs/bwins/QtOpenGLu.def
	src/s60installs/eabi/QtOpenGLu.def
	tests/auto/qtextlayout/tst_qtextlayout.cpp

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/auto/qscriptengine/tst_qscriptengine.cpp b/tests/auto/qscriptengine/tst_qscriptengine.cpp
index 2d7feee..1de34b4 100644
--- a/tests/auto/qscriptengine/tst_qscriptengine.cpp
+++ b/tests/auto/qscriptengine/tst_qscriptengine.cpp
@@ -235,6 +235,7 @@ private slots:
     void evaluateProgram_multipleEngines();
     void evaluateProgram_empty();
     void collectGarbageAfterConnect();
+    void collectGarbageAfterNativeArguments();
     void promoteThisObjectToQObjectInConstructor();
     void scriptValueFromQMetaObject();
 
@@ -5643,6 +5644,16 @@ void tst_QScriptEngine::collectGarbageAfterConnect()
     QVERIFY(widget == 0);
 }
 
+void tst_QScriptEngine::collectGarbageAfterNativeArguments()
+{
+    // QTBUG-17788
+    QScriptEngine eng;
+    QScriptContext *ctx = eng.pushContext();
+    QScriptValue arguments = ctx->argumentsObject();
+    // Shouldn't crash when marking the arguments object.
+    collectGarbage_helper(eng);
+}
+
 static QScriptValue constructQObjectFromThisObject(QScriptContext *ctx, QScriptEngine *eng)
 {
     Q_ASSERT(ctx->isCalledAsConstructor());