(early draft) Strict mode - throw exception on assignment to read only property.

test/cctest/test-mark-compact.cc

Index: test/cctest/test-mark-compact.cc
diff --git a/test/cctest/test-mark-compact.cc b/test/cctest/test-mark-compact.cc
index 86f105f2c971234f48641e82c00b5204a5ac2021..3e3175e7352d906b2a28d39901e108dc1cb6d8c5 100644
--- a/test/cctest/test-mark-compact.cc
+++ b/test/cctest/test-mark-compact.cc
@@ -189,7 +189,8 @@ TEST(MarkCompactCollector) {
   function->set_initial_map(initial_map);
   Top::context()->global()->SetProperty(func_name,
                                         function,
-                                        NONE)->ToObjectChecked();
+                                        NONE,
+                                        kNonStrictMode)->ToObjectChecked();
 
   JSObject* obj =
       JSObject::cast(Heap::AllocateJSObject(function)->ToObjectChecked());
@@ -208,10 +209,14 @@ TEST(MarkCompactCollector) {
       String::cast(Heap::LookupAsciiSymbol("theObject")->ToObjectChecked());
   Top::context()->global()->SetProperty(obj_name,
                                         obj,
-                                        NONE)->ToObjectChecked();
+                                        NONE,
+                                        kNonStrictMode)->ToObjectChecked();
   String* prop_name =
       String::cast(Heap::LookupAsciiSymbol("theSlot")->ToObjectChecked());
-  obj->SetProperty(prop_name, Smi::FromInt(23), NONE)->ToObjectChecked();
+  obj->SetProperty(prop_name,
+                   Smi::FromInt(23),
+                   NONE,
+                   kNonStrictMode)->ToObjectChecked();
 
   Heap::CollectGarbage(OLD_POINTER_SPACE);