To satisfy ASAN, use stub instead of & operator to get C++ stack pointer.

runtime/vm/simulator_arm64.cc

 // Copyright (c) 2014, 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 <setjmp.h>  // NOLINT
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM64)
 
@@ skipping 37 matching lines @@
     // "This" is now the last setjmp buffer.
     simulator_->set_last_setjmp_buffer(this);
     longjmp(buffer_, 1);
   }
 
   explicit SimulatorSetjmpBuffer(Simulator* sim) {
     simulator_ = sim;
     link_ = sim->last_setjmp_buffer();
     sim->set_last_setjmp_buffer(this);
     sp_ = static_cast<uword>(sim->get_register(R31, R31IsSP));
-    native_sp_ = reinterpret_cast<uword>(&sim);  // Current C++ stack pointer.
+    native_sp_ = Isolate::GetCurrentStackPointer();
   }
 
   ~SimulatorSetjmpBuffer() {
     ASSERT(simulator_->last_setjmp_buffer() == this);
     simulator_->set_last_setjmp_buffer(link_);
   }
 
   SimulatorSetjmpBuffer* link() { return link_; }
 
   uword sp() { return sp_; }
@@ skipping 1510 matching lines @@
     Redirection* redirection = Redirection::FromHltInstruction(instr);
     uword external = redirection->external_function();
     if (IsTracingExecution()) {
       OS::Print("Call to host function at 0x%" Pd "\n", external);
     }
 
     if ((redirection->call_kind() == kRuntimeCall) ||
         (redirection->call_kind() == kBootstrapNativeCall) ||
         (redirection->call_kind() == kNativeCall)) {
       // Set the top_exit_frame_info of this simulator to the native stack.
-      set_top_exit_frame_info(reinterpret_cast<uword>(&buffer));
+      set_top_exit_frame_info(Isolate::GetCurrentStackPointer());
     }
     if (redirection->call_kind() == kRuntimeCall) {
       NativeArguments* arguments =
           reinterpret_cast<NativeArguments*>(get_register(R0));
       SimulatorRuntimeCall target =
           reinterpret_cast<SimulatorRuntimeCall>(external);
       target(*arguments);
       // Zap result register from void function.
       set_register(instr, R0, icount_);
       set_register(instr, R1, icount_);
@@ skipping 1898 matching lines @@
   set_register(NULL, kExceptionObjectReg, bit_cast<int64_t>(raw_exception));
   set_register(NULL, kStackTraceObjectReg, bit_cast<int64_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM64)
 
 #endif  // defined TARGET_ARCH_ARM64