1 files changed, 10 insertions, 2 deletions
diff --git a/Source/JavaScriptCore/bytecode/StructureSet.h b/Source/JavaScriptCore/bytecode/StructureSet.h
index 344183b45..bfc30fc3c 100644
--- a/Source/JavaScriptCore/bytecode/StructureSet.h
+++ b/Source/JavaScriptCore/bytecode/StructureSet.h
@@ -27,13 +27,12 @@
 #define StructureSet_h
 
 #include "PredictedType.h"
+#include "Structure.h"
 #include <stdio.h>
 #include <wtf/Vector.h>
 
 namespace JSC {
 
-class Structure;
-
 namespace DFG {
 class StructureAbstractValue;
 }
@@ -107,6 +106,15 @@ public:
     
     size_t size() const { return m_structures.size(); }
     
+    bool allAreUsingInlinePropertyStorage() const
+    {
+        for (size_t i = 0; i < m_structures.size(); ++i) {
+            if (!m_structures[i]->isUsingInlineStorage())
+                return false;
+        }
+        return true;
+    }
+    
     Structure* at(size_t i) const { return m_structures.at(i); }
     
     Structure* operator[](size_t i) const { return at(i); }