1 files changed, 3 insertions, 8 deletions
diff --git a/Source/JavaScriptCore/heap/Strong.h b/Source/JavaScriptCore/heap/Strong.h
index 27ab5d31f..264c24e25 100644
--- a/Source/JavaScriptCore/heap/Strong.h
+++ b/Source/JavaScriptCore/heap/Strong.h
@@ -23,8 +23,7 @@
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef Strong_h
-#define Strong_h
+#pragma once
 
 #include <wtf/Assertions.h>
 #include "Handle.h"
@@ -84,9 +83,7 @@ public:
 
     bool operator!() const { return !slot() || !*slot(); }
 
-    // This conversion operator allows implicit conversion to bool but not to other integer types.
-    typedef JSValue (HandleBase::*UnspecifiedBoolType);
-    operator UnspecifiedBoolType*() const { return !!*this ? reinterpret_cast<UnspecifiedBoolType*>(1) : 0; }
+    explicit operator bool() const { return !!*this; }
 
     void swap(Strong& other)
     {
@@ -154,6 +151,4 @@ template<typename T> struct VectorTraits<JSC::Strong<T>> : SimpleClassVectorTrai
 
 template<typename P> struct HashTraits<JSC::Strong<P>> : SimpleClassHashTraits<JSC::Strong<P>> { };
 
-}
-
-#endif // Strong_h
+} // namespace WTF