Fix context for fast accessors (lazy).

src/fast-accessor-assembler.cc

 // Copyright 2015 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/fast-accessor-assembler.h"
 
 #include "src/base/logging.h"
 #include "src/code-stub-assembler.h"
 #include "src/code-stubs.h"  // For CallApiCallbackStub.
 #include "src/handles-inl.h"
@@ skipping 150 matching lines @@
 FastAccessorAssembler::ValueId FastAccessorAssembler::Call(
     FunctionCallback callback_function, ValueId arg) {
   CHECK_EQ(kBuilding, state_);
 
   // Wrap the FunctionCallback in an ExternalReference.
   ApiFunction callback_api_function(FUNCTION_ADDR(callback_function));
   ExternalReference callback(&callback_api_function,
                              ExternalReference::DIRECT_API_CALL, isolate());
 
   // Create & call API callback via stub.
-  CallApiCallbackStub stub(isolate(), 1, true);
+  CallApiCallbackStub stub(isolate(), 1, true, true);
   DCHECK_EQ(5, stub.GetCallInterfaceDescriptor().GetParameterCount());
   DCHECK_EQ(1, stub.GetCallInterfaceDescriptor().GetStackParameterCount());
   // TODO(vogelheim): There is currently no clean way to retrieve the context
   //     parameter for a stub and the implementation details are hidden in
   //     compiler/*. The context_paramter is computed as:
   //       Linkage::GetJSCallContextParamIndex(descriptor->JSParameterCount())
-  const int context_parameter = 2;
+  const int context_parameter = 3;
   Node* call = assembler_->CallStub(
       stub.GetCallInterfaceDescriptor(),
       assembler_->HeapConstant(stub.GetCode()),
       assembler_->Parameter(context_parameter),
 
       // Stub/register parameters:
-      assembler_->Parameter(0),               /* receiver (use accessor's) */
-      assembler_->UndefinedConstant(),        /* call_data (undefined) */
-      assembler_->NullConstant(),             /* holder (null) */
+      assembler_->UndefinedConstant(), /* callee (there's no JSFunction) */
+      assembler_->UndefinedConstant(), /* call_data (undefined) */
+      assembler_->Parameter(0), /* receiver (same as holder in this case) */
       assembler_->ExternalConstant(callback), /* API callback function */
 
       // JS arguments, on stack:
       FromId(arg));
 
   return FromRaw(call);
 }
 
 MaybeHandle<Code> FastAccessorAssembler::Build() {
   CHECK_EQ(kBuilding, state_);
@@ skipping 31 matching lines @@
 void FastAccessorAssembler::Clear() {
   for (auto label : labels_) {
     delete label;
   }
   nodes_.clear();
   labels_.clear();
 }
 
 }  // namespace internal
 }  // namespace v8