2 files changed, 8 insertions, 3 deletions
diff --git a/Source/JavaScriptCore/heap/MachineStackMarker.cpp b/Source/JavaScriptCore/heap/MachineStackMarker.cpp
index 537a34e48..3c7ff9c3e 100644
--- a/Source/JavaScriptCore/heap/MachineStackMarker.cpp
+++ b/Source/JavaScriptCore/heap/MachineStackMarker.cpp
@@ -133,10 +133,13 @@ public:
 };
 
 MachineThreads::MachineThreads(Heap* heap)
-    : m_heap(heap)
-    , m_registeredThreads(0)
+    : m_registeredThreads(0)
     , m_threadSpecific(0)
+#if !ASSERT_DISABLED
+    , m_heap(heap)
+#endif
 {
+    UNUSED_PARAM(heap);
 }
 
 MachineThreads::~MachineThreads()
diff --git a/Source/JavaScriptCore/heap/MachineStackMarker.h b/Source/JavaScriptCore/heap/MachineStackMarker.h
index 3d4aa22d4..cece29cd3 100644
--- a/Source/JavaScriptCore/heap/MachineStackMarker.h
+++ b/Source/JavaScriptCore/heap/MachineStackMarker.h
@@ -52,10 +52,12 @@ namespace JSC {
 
         void gatherFromOtherThread(ConservativeRoots&, Thread*);
 
-        Heap* m_heap;
         Mutex m_registeredThreadsMutex;
         Thread* m_registeredThreads;
         WTF::ThreadSpecificKey m_threadSpecific;
+#if !ASSERT_DISABLED
+        Heap* m_heap;
+#endif
     };
 
 } // namespace JSC