Use page header information to test for InNewSpace.

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index dcc1c5339c331469a118e80424c323fd2ec54da1..cca0f4bda71e59fcf895bc20d6879866b4ce51cf 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -631,6 +631,7 @@ struct ValueInfo : public Malloced {
 // A template-ized version of the IsXXX functions.
 template <class C> static inline bool Is(Object* obj);
 
+class Failure;

[Erik Corry, 2011/05/19 07:22:32]

It would perhaps be neater to group this with the other class forward
declarations above.

[Lasse Reichstein, 2011/05/19 08:40:40]

Done.

 
 class MaybeObject BASE_EMBEDDED {
  public:
@@ -644,6 +645,10 @@ class MaybeObject BASE_EMBEDDED {
     *obj = reinterpret_cast<Object*>(this);
     return true;
   }
+  inline Failure* ToFailureUnchecked() {
+    ASSERT(IsFailure());
+    return reinterpret_cast<Failure*>(this);
+  }
   inline Object* ToObjectUnchecked() {
     ASSERT(!IsFailure());
     return reinterpret_cast<Object*>(this);