avm2: Add test for instantiating abstract classes

tests/tests/swfs/avm2/abstract_classes/Test.as

@@ -0,0 +1,33 @@
+// compiled with mxmlc
+
+import flash.display.*;
+import flash.text.engine.TextLine;
+import flash.system.Worker;
+
+package {
+    import flash.display.MovieClip;
+    public class Test extends MovieClip {
+        public function Test() {
+            var classes = [
+                Stage,
+                DisplayObject,
+                DisplayObjectContainer,
+                InteractiveObject,
+                LoaderInfo,
+                TextLine,
+                Class,
+                Math,
+                MorphShape,
+                Worker,
+            ]
+            for each(var t in classes) {
+                trace(t);
+                try {
+                    new t();
+                } catch(e) {
+                    trace(e.getStackTrace());
+                }
+            }
+        }
+    }
+}

tests/tests/swfs/avm2/abstract_classes/output.txt

@@ -0,0 +1,30 @@
+[class Stage]
+ArgumentError: Error #2012: Stage$ class cannot be instantiated.
+	at Test()
+[class DisplayObject]
+ArgumentError: Error #2012: DisplayObject$ class cannot be instantiated.
+	at Test()
+[class DisplayObjectContainer]
+ArgumentError: Error #2012: DisplayObjectContainer$ class cannot be instantiated.
+	at Test()
+[class InteractiveObject]
+ArgumentError: Error #2012: InteractiveObject$ class cannot be instantiated.
+	at Test()
+[class LoaderInfo]
+ArgumentError: Error #2012: LoaderInfo$ class cannot be instantiated.
+	at Test()
+[class TextLine]
+ArgumentError: Error #2012: TextLine$ class cannot be instantiated.
+	at Test()
+[class Class]
+TypeError: Error #1115: Class$ is not a constructor.
+	at Test()
+[class Math]
+TypeError: Error #1076: Math is not a constructor.
+	at Test()
+[class MorphShape]
+ArgumentError: Error #2012: MorphShape$ class cannot be instantiated.
+	at Test()
+[class Worker]
+ArgumentError: Error #2012: Worker$ class cannot be instantiated.
+	at Test()

tests/tests/swfs/avm2/abstract_classes/test.toml

@@ -0,0 +1 @@
+num_frames = 1