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

src/ia32/virtual-frame-ia32.cc

Index: src/ia32/virtual-frame-ia32.cc
diff --git a/src/ia32/virtual-frame-ia32.cc b/src/ia32/virtual-frame-ia32.cc
index 1cc91a9fea2b19e16ff26a7c246dc422737d7b71..a051a602c9047ae70cf713427cb1415c6181e853 100644
--- a/src/ia32/virtual-frame-ia32.cc
+++ b/src/ia32/virtual-frame-ia32.cc
@@ -1038,9 +1038,9 @@ Result VirtualFrame::CallStoreIC(Handle<String> name,
                                  StrictModeFlag strict_mode) {
   // Value and (if not contextual) receiver are on top of the frame.
   // The IC expects name in ecx, value in eax, and receiver in edx.
-  Handle<Code> ic(Builtins::builtin(strict_mode == kStrictMode
-      ? Builtins::StoreIC_Initialize_Strict
-      : Builtins::StoreIC_Initialize));
+  Handle<Code> ic(Builtins::builtin(
+      strict_mode == kStrictMode ? Builtins::StoreIC_Initialize_Strict
+                                 : Builtins::StoreIC_Initialize));
 
   Result value = Pop();
   RelocInfo::Mode mode;
@@ -1061,7 +1061,7 @@ Result VirtualFrame::CallStoreIC(Handle<String> name,
 }
 
 
-Result VirtualFrame::CallKeyedStoreIC() {
+Result VirtualFrame::CallKeyedStoreIC(StrictModeFlag strict_mode) {
   // Value, key, and receiver are on the top of the frame.  The IC
   // expects value in eax, key in ecx, and receiver in edx.
   Result value = Pop();
@@ -1105,7 +1105,9 @@ Result VirtualFrame::CallKeyedStoreIC() {
     receiver.Unuse();
   }
 
-  Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize));
+  Handle<Code> ic(Builtins::builtin(
+      strict_mode == kStrictMode ? Builtins::KeyedStoreIC_Initialize_Strict
+                                 : Builtins::KeyedStoreIC_Initialize));
   return RawCallCodeObject(ic, RelocInfo::CODE_TARGET);
 }