1. Do not initialize the stack limit during isolate initialization, it is done instead at StartIsol…

runtime/vm/isolate.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/isolate.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
@@ skipping 876 matching lines @@
   // Setup the isolate message handler.
   MessageHandler* handler = new IsolateMessageHandler(result);
   ASSERT(handler != NULL);
   result->set_message_handler(handler);
 
   // Setup the Dart API state.
   ApiState* state = new ApiState();
   ASSERT(state != NULL);
   result->set_api_state(state);
 
-  // Initialize stack limit (wait until later for the VM isolate, since the
-  // needed GetStackPointer stub has not yet been generated in that case).
-  if (!is_vm_isolate) {
-    result->InitializeStackLimit();
-  }
   result->set_main_port(PortMap::CreatePort(result->message_handler()));
 #if defined(DEBUG)
   // Verify that we are never reusing a live origin id.
   VerifyOriginId id_verifier(result->main_port());
   Isolate::VisitIsolates(&id_verifier);
 #endif
   result->set_origin_id(result->main_port());
   result->set_pause_capability(result->random()->NextUInt64());
   result->set_terminate_capability(result->random()->NextUInt64());
 
@@ skipping 19 matching lines @@
     result->LowLevelShutdown();
     Thread::ExitIsolate();
     delete result;
     return NULL;
   }
 
   return result;
 }
 
 
-void Isolate::InitializeStackLimit() {
-  SetStackLimitFromStackBase(Isolate::GetCurrentStackPointer());
-}
-
-
 /* static */
 uword Isolate::GetCurrentStackPointer() {
   // Since AddressSanitizer's detect_stack_use_after_return instruments the
   // C++ code to give out fake stack addresses, we call a stub in that case.
   uword (*func)() = reinterpret_cast<uword (*)()>(
       StubCode::GetStackPointer_entry()->EntryPoint());
   // But for performance (and to support simulators), we normally use a local.
 #if defined(__has_feature)
 #if __has_feature(address_sanitizer)
   uword current_sp = func();
@@ skipping 1654 matching lines @@
 }
 
 
 RawInstance* IsolateSpawnState::BuildMessage(Thread* thread) {
   return DeserializeObject(thread,
                            serialized_message_, serialized_message_len_);
 }
 
 
 }  // namespace dart