V4: support calling constants.

Consider:
  function f() {
    var a;
    a();
  }

Here the constant propagation will propagate the value for a (undefined)
to the call site. This was not yet handled, resulting in Q_UNIMPLEMENTED
warnings when running a debug build.

Change-Id: I5f85f681d975b54df7a9e00bd5b50e6f4350139a
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/auto/qml/qjsengine/tst_qjsengine.cpp b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
index 17acb4fd32..94f62a56bb 100644
--- a/tests/auto/qml/qjsengine/tst_qjsengine.cpp
+++ b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
@@ -159,6 +159,8 @@ private slots:
 
     void scopeOfEvaluate();
 
+    void callConstants();
+
 signals:
     void testSignal();
 };
@@ -3050,6 +3052,15 @@ void tst_QJSEngine::scopeOfEvaluate()
     QCOMPARE(result.toInt(), 42);
 }
 
+void tst_QJSEngine::callConstants()
+{
+    QJSEngine engine;
+    engine.evaluate("function f() {\n"
+                    "  var one; one();\n"
+                    "  var two = null; two();\n"
+                    "}\n");
+}
+
 QTEST_MAIN(tst_QJSEngine)
 
 #include "tst_qjsengine.moc"