Implement identity hashes for proxies.

src/objects-debug.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 492 matching lines @@
     }
     default:
       ASSERT_EQ(JSRegExp::NOT_COMPILED, TypeTag());
       ASSERT(data()->IsUndefined());
       break;
   }
 }
 
 
 void JSProxy::JSProxyVerify() {
-  ASSERT(IsJSProxy());
+  CHECK(IsJSProxy());
   VerifyPointer(handler());
+  ASSERT(hash()->IsSmi() || hash()->IsUndefined());
 }
 
 
 void JSFunctionProxy::JSFunctionProxyVerify() {
-  ASSERT(IsJSFunctionProxy());
+  CHECK(IsJSFunctionProxy());
   JSProxyVerify();
   VerifyPointer(call_trap());
   VerifyPointer(construct_trap());
 }
 
 
 void Foreign::ForeignVerify() {
   ASSERT(IsForeign());
 }
 
@@ skipping 253 matching lines @@
         ASSERT(e->IsUndefined());
       }
     }
   }
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal