Fix issue with context not being saved on x64 introduced in 144543004

test/cctest/test-accessors.cc

 // Copyright 2012 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 562 matching lines @@
 
   v8::Handle<v8::ObjectTemplate> obj = ObjectTemplate::New(isolate);
   obj->SetNamedPropertyHandler(
       JSONStringifyGetter, NULL, NULL, NULL, JSONStringifyEnumerator);
   env->Global()->Set(v8_str("obj"), obj->NewInstance());
   v8::Handle<v8::String> expected = v8_str("{\"regress\":\"crbug-161028\"}");
   CHECK(CompileRun("JSON.stringify(obj)")->Equals(expected));
 }
 
 
+static v8::Local<v8::Context> expected_current_context;
+static v8::Local<v8::Context> expected_calling_context;
+
+
+static void check_contexts(const v8::FunctionCallbackInfo<v8::Value>& info) {
+  ApiTestFuzzer::Fuzz();
+  CHECK(expected_current_context == info.GetIsolate()->GetCurrentContext());
+  CHECK(expected_calling_context == info.GetIsolate()->GetCallingContext());
+}
+
+
 THREADED_TEST(AccessorPropertyCrossContext) {
   LocalContext env;
   v8::Isolate* isolate = env->GetIsolate();
   v8::HandleScope scope(isolate);
-  v8::Handle<v8::Function> fun = v8::Function::New(isolate, handle_property);
+  v8::Handle<v8::Function> fun = v8::Function::New(isolate, check_contexts);
   LocalContext switch_context;
   switch_context->Global()->Set(v8_str("fun"), fun);
   v8::TryCatch try_catch;
+  expected_current_context = env.local();
+  expected_calling_context = switch_context.local();
   CompileRun(
       "var o = Object.create(null, { n: { get:fun } });"
       "for (var i = 0; i < 10; i++) o.n;");
   CHECK(!try_catch.HasCaught());
 }