1 files changed, 18 insertions, 14 deletions

diff --git a/Source/JavaScriptCore/runtime/IndexingHeader.h b/Source/JavaScriptCore/runtime/IndexingHeader.h
index caa18183a..145b61876 100644
--- a/Source/JavaScriptCore/runtime/IndexingHeader.h
+++ b/Source/JavaScriptCore/runtime/IndexingHeader.h
@@ -44,25 +44,25 @@ public:
     
     static ptrdiff_t offsetOfIndexingHeader() { return -static_cast<ptrdiff_t>(sizeof(IndexingHeader)); }
     
-    static ptrdiff_t offsetOfPublicLength() { return OBJECT_OFFSETOF(IndexingHeader, m_publicLength); }
-    static ptrdiff_t offsetOfVectorLength() { return OBJECT_OFFSETOF(IndexingHeader, m_vectorLength); }
+    static ptrdiff_t offsetOfPublicLength() { return OBJECT_OFFSETOF(IndexingHeader, u.lengths.publicLength); }
+    static ptrdiff_t offsetOfVectorLength() { return OBJECT_OFFSETOF(IndexingHeader, u.lengths.vectorLength); }
     
     IndexingHeader()
-        : m_publicLength(0)
-        , m_vectorLength(0)
     {
+        u.lengths.publicLength = 0;
+        u.lengths.vectorLength = 0;
     }
     
-    uint32_t vectorLength() const { return m_vectorLength; }
+    uint32_t vectorLength() const { return u.lengths.vectorLength; }
     
     void setVectorLength(uint32_t length)
     {
-        ASSERT(length <= maximumLength);
-        m_vectorLength = length;
+        RELEASE_ASSERT(length <= maximumLength);
+        u.lengths.vectorLength = length;
     }
     
-    uint32_t publicLength() { return m_publicLength; }
-    void setPublicLength(uint32_t auxWord) { m_publicLength = auxWord; }
+    uint32_t publicLength() { return u.lengths.publicLength; }
+    void setPublicLength(uint32_t auxWord) { u.lengths.publicLength = auxWord; }
     
     static IndexingHeader* from(Butterfly* butterfly)
     {
@@ -86,12 +86,12 @@ public:
     
     PropertyStorage propertyStorage()
     {
-        return reinterpret_cast<PropertyStorage>(this);
+        return reinterpret_cast_ptr<PropertyStorage>(this);
     }
     
     ConstPropertyStorage propertyStorage() const
     {
-        return reinterpret_cast<ConstPropertyStorage>(this);
+        return reinterpret_cast_ptr<ConstPropertyStorage>(this);
     }
     
     ArrayStorage* arrayStorage()
@@ -111,9 +111,13 @@ public:
     
 private:
     friend class LLIntOffsetsExtractor;
-    
-    uint32_t m_publicLength; // The meaning of this field depends on the array type, but for all JSArrays we rely on this being the publicly visible length (array.length).
-    uint32_t m_vectorLength; // The length of the indexed property storage. The actual size of the storage depends on this, and the type.
+
+    union {
+        struct {
+            uint32_t publicLength; // The meaning of this field depends on the array type, but for all JSArrays we rely on this being the publicly visible length (array.length).
+            uint32_t vectorLength; // The length of the indexed property storage. The actual size of the storage depends on this, and the type.
+        } lengths;
+    } u;
 };
 
 } // namespace JSC