Always check that a Name is a String before converting it.

third_party/WebKit/Source/bindings/tests/results/core/V8TestSpecialOperations.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file has been auto-generated by code_generator_v8.py. DO NOT MODIFY!
 
 #include "V8TestSpecialOperations.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/UnionTypesCore.h"
@@ skipping 47 matching lines @@
     v8SetReturnValue(info, result);
 }
 
 static void namedItemMethodCallback(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     TestSpecialOperationsV8Internal::namedItemMethod(info);
 }
 
 static void namedPropertyGetter(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (!name->IsString())
+        return;
     auto nameString = name.As<v8::String>();
     TestSpecialOperations* impl = V8TestSpecialOperations::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(nameString);
     NodeOrNodeList result;
     impl->getItem(propertyName, result);
     if (result.isNull())
         return;
     v8SetReturnValue(info, result);
 }
 
 static void namedPropertyGetterCallback(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestSpecialOperationsV8Internal::namedPropertyGetter(name, info);
 }
 
 static void namedPropertySetter(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
+    if (!name->IsString())
+        return;
     auto nameString = name.As<v8::String>();
     TestSpecialOperations* impl = V8TestSpecialOperations::toImpl(info.Holder());
     V8StringResource<> propertyName(nameString);
     if (!propertyName.prepare())
         return;
     Node* propertyValue = V8Node::toImplWithTypeCheck(info.GetIsolate(), v8Value);
     if (!propertyValue && !isUndefinedOrNull(v8Value)) {
         exceptionState.throwTypeError("The provided value is not of type 'Node'.");
         exceptionState.throwIfNeeded();
         return;
     }
     bool result = impl->anonymousNamedSetter(propertyName, propertyValue);
     if (!result)
         return;
     v8SetReturnValue(info, v8Value);
 }
 
 static void namedPropertySetterCallback(v8::Local<v8::Name> name, v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<v8::Value>& info)
 {
     TestSpecialOperationsV8Internal::namedPropertySetter(name, v8Value, info);
 }
 
 static void namedPropertyQuery(v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Integer>& info)
 {
+    if (!name->IsString())
+        return;
     TestSpecialOperations* impl = V8TestSpecialOperations::toImpl(info.Holder());
     AtomicString propertyName = toCoreAtomicString(name.As<v8::String>());
     v8::String::Utf8Value namedProperty(name);
     ExceptionState exceptionState(ExceptionState::GetterContext, *namedProperty, "TestSpecialOperations", info.Holder(), info.GetIsolate());
     bool result = impl->namedPropertyQuery(propertyName, exceptionState);
     if (exceptionState.throwIfNeeded())
         return;
     if (!result)
         return;
     v8SetReturnValueInt(info, v8::None);
@@ skipping 62 matching lines @@
 {
     return V8PerIsolateData::from(isolate)->findInstanceInPrototypeChain(&wrapperTypeInfo, v8Value);
 }
 
 TestSpecialOperations* V8TestSpecialOperations::toImplWithTypeCheck(v8::Isolate* isolate, v8::Local<v8::Value> value)
 {
     return hasInstance(value, isolate) ? toImpl(v8::Local<v8::Object>::Cast(value)) : 0;
 }
 
 } // namespace blink