Tests that the GC doesn't mistake non-pointer constant pool entries as poitners.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index b26a857e1920fa691b2eceb244fd0272da285f58..39c4ba4db50a8c7b34f7f23e55303d64a45e8794 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -2539,6 +2539,7 @@ void ConstantPoolArray::set(int index, Address value) {
 
 void ConstantPoolArray::set(int index, Object* value) {
   ASSERT(map() == GetHeap()->constant_pool_array_map());
+  ASSERT(!GetHeap()->InNewSpace(value));
   ASSERT(get_type(index) == HEAP_PTR);
   WRITE_FIELD(this, OffsetOfElementAt(index), value);
   WRITE_BARRIER(GetHeap(), this, OffsetOfElementAt(index), value);
@@ -2583,6 +2584,7 @@ void ConstantPoolArray::set_at_offset(int offset, Address value) {
 
 void ConstantPoolArray::set_at_offset(int offset, Object* value) {
   ASSERT(map() == GetHeap()->constant_pool_array_map());
+  ASSERT(!GetHeap()->InNewSpace(value));
   ASSERT(offset_is_type(offset, HEAP_PTR));
   WRITE_FIELD(this, offset, value);
   WRITE_BARRIER(GetHeap(), this, offset, value);