1 files changed, 11 insertions, 4 deletions
diff --git a/JavaScriptCore/runtime/WeakGCPtr.h b/JavaScriptCore/runtime/WeakGCPtr.h
index 3ed4645..9dce858 100644
--- a/JavaScriptCore/runtime/WeakGCPtr.h
+++ b/JavaScriptCore/runtime/WeakGCPtr.h
@@ -44,10 +44,13 @@ public:
         return m_ptr;
     }
     
-    void clear(JSCell* ptr)
+    bool clear(JSCell* ptr)
     {
-        if (ptr == m_ptr)
+        if (ptr == m_ptr) {
             m_ptr = 0;
+            return true;
+        }
+        return false;
     }
 
     T& operator*() const { return *get(); }
@@ -65,11 +68,15 @@ public:
 
     WeakGCPtr& operator=(T*);
 
+#if !ASSERT_DISABLED
+    bool hasDeadObject() const { return !!m_ptr; }
+#endif
+
 private:
     void assign(T* ptr)
     {
-        if (ptr)
-            Heap::markCell(ptr);
+        ASSERT(ptr);
+        Heap::markCell(ptr);
         m_ptr = ptr;
     }