Index: src/heap.cc |
=================================================================== |
--- src/heap.cc (revision 1540) |
+++ src/heap.cc (working copy) |
@@ -56,6 +56,8 @@ |
SYMBOL_LIST(SYMBOL_ALLOCATION) |
#undef SYMBOL_ALLOCATION |
+String* Heap::hidden_symbol_; |
+ |
NewSpace Heap::new_space_; |
OldSpace* Heap::old_pointer_space_ = NULL; |
OldSpace* Heap::old_data_space_ = NULL; |
@@ -1213,6 +1215,16 @@ |
(name##_) = String::cast(obj); |
SYMBOL_LIST(SYMBOL_INITIALIZE) |
#undef SYMBOL_INITIALIZE |
+ |
+ // Allocate the hidden symbol which is used to identify the hidden properties |
+ // in JSObjects. The hash code has a special value so that it will not match |
+ // the empty string when searching for the property. It cannot be part of the |
+ // SYMBOL_LIST because it needs to be allocated manually with the special |
+ // hash code in place. The hash code for the hidden_symbol is zero to ensure |
+ // that it will always be at the first entry in property descriptors. |
+ obj = AllocateSymbol(CStrVector(""), 0, String::kHashComputedMask); |
+ if (obj->IsFailure()) return false; |
+ hidden_symbol_ = String::cast(obj); |
// Allocate the proxy for __proto__. |
obj = AllocateProxy((Address) &Accessors::ObjectPrototype); |
@@ -2641,6 +2653,7 @@ |
v->VisitPointer(bit_cast<Object**, String**>(&name##_)); |
SYMBOL_LIST(SYMBOL_ITERATE) |
#undef SYMBOL_ITERATE |
+ v->VisitPointer(bit_cast<Object**, String**>(&hidden_symbol_)); |
SYNCHRONIZE_TAG("symbol"); |
Bootstrapper::Iterate(v); |