1 files changed, 6 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/heap/Heap.h b/Source/JavaScriptCore/heap/Heap.h
index 88dc201a4..51cebdc0e 100644
--- a/Source/JavaScriptCore/heap/Heap.h
+++ b/Source/JavaScriptCore/heap/Heap.h
@@ -86,6 +86,7 @@ namespace JSC {
         // our scan to run faster. 
         static const unsigned s_timeCheckResolution = 16;
 
+        static bool isLive(const void*);
         static bool isMarked(const void*);
         static bool testAndSetMarked(const void*);
         static void setMarked(const void*);
@@ -305,6 +306,11 @@ namespace JSC {
         return heap(v.asCell());
     }
 
+    inline bool Heap::isLive(const void* cell)
+    {
+        return MarkedBlock::blockFor(cell)->isLiveCell(cell);
+    }
+
     inline bool Heap::isMarked(const void* cell)
     {
         return MarkedBlock::blockFor(cell)->isMarked(cell);