Added no argument constructor support to external arrays.

test/mjsunit/external-array.js

Index: test/mjsunit/external-array.js
===================================================================
--- test/mjsunit/external-array.js	(revision 10785)
+++ test/mjsunit/external-array.js	(working copy)
@@ -43,11 +43,11 @@
 assertEquals(0, a[0]);
 assertEquals(0, a[1]);
 
-// No-parameter constructor should fail right now.
+// No-parameter constructor shouldn't fail
 function abfunc1() {
   return new ArrayBuffer();
 }
-assertThrows(abfunc1);
+assertDoesNotThrow(abfunc1);
 
 // Test derivation from an ArrayBuffer
 var ab = new ArrayBuffer(12);
@@ -351,3 +351,37 @@
 %OptimizeFunctionOnNextCall(store_float64_undefined);
 store_float64_undefined(float64_array);
 assertTrue(isNaN(float64_array[0]));
+
+// test external arrays call() and apply() methods with no arguments
+function testNoArgCallApply(type) {
+  assertDoesNotThrow(type.call({}));
+  assertDoesNotThrow(type.apply({}));
+}
+
+// compare type.call() and new type() own property names
+function testNoArgCallAndNewOwnPropertyNames(type) {
+  var o1 = type.call({});
+  var o2 = new type();
+  
+  assertPropertiesEqual(
+    Object.getOwnPropertyNames(o1),
+    Object.getOwnPropertyNames(o2)
+  );
+}
+
+// compare type.apply() and new type() own property names
+function testNoArgApplyAndNewOwnPropertyNames(type) {
+  var o1 = type.apply({});
+  var o2 = new type();
+  
+  assertPropertiesEqual(
+    Object.getOwnPropertyNames(o1),
+    Object.getOwnPropertyNames(o2)
+  );
+}
+
+for (var t = 0; t < types.length; t++) {
+  testNoArgCallApply(types[t]);
+  testNoArgCallAndNewOwnPropertyNames(types[t]);
+  testNoArgApplyAndNewOwnPropertyNames(types[t]);
+}