Class methods should be non enumerable

src/x64/full-codegen-x64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
@@ skipping 1768 matching lines @@
           } else {
             __ Drop(3);
           }
           break;
 
         case ObjectLiteral::Property::PROTOTYPE:
           UNREACHABLE();
           break;
 
         case ObjectLiteral::Property::GETTER:
-          __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 3);
+          __ Push(Smi::FromInt(NONE));
+          __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4);
           break;
 
         case ObjectLiteral::Property::SETTER:
-          __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 3);
+          __ Push(Smi::FromInt(NONE));
+          __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4);
           break;
       }
     }
   }
 
   if (expr->has_function()) {
     DCHECK(result_saved);
     __ Push(Operand(rsp, 0));
     __ CallRuntime(Runtime::kToFastProperties, 1);
   }
@@ skipping 665 matching lines @@
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
       case ObjectLiteral::Property::PROTOTYPE:
         UNREACHABLE();
       case ObjectLiteral::Property::COMPUTED:
         __ CallRuntime(Runtime::kDefineClassMethod, 3);
         break;
 
       case ObjectLiteral::Property::GETTER:
-        __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 3);
+        __ Push(Smi::FromInt(DONT_ENUM));
+        __ CallRuntime(Runtime::kDefineGetterPropertyUnchecked, 4);
         break;
 
       case ObjectLiteral::Property::SETTER:
-        __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 3);
+        __ Push(Smi::FromInt(DONT_ENUM));
+        __ CallRuntime(Runtime::kDefineSetterPropertyUnchecked, 4);
         break;
 
       default:
         UNREACHABLE();
     }
   }
 
   // prototype
   __ CallRuntime(Runtime::kToFastProperties, 1);
 
@@ skipping 2820 matching lines @@
   DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(),
             Assembler::target_address_at(call_target_address,
                                          unoptimized_code));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64