Interrupts must not mask stack overflow.

src/execution.h

 // Copyright 2014 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.
 
 #ifndef V8_EXECUTION_H_
 #define V8_EXECUTION_H_
 
 #include "src/handles.h"
 
 namespace v8 {
@@ skipping 127 matching lines @@
   char* RestoreStackGuard(char* from);
   static int ArchiveSpacePerThread() { return sizeof(ThreadLocal); }
   void FreeThreadResources();
   // Sets up the default stack guard for this thread if it has not
   // already been set up.
   void InitThread(const ExecutionAccess& lock);
   // Clears the stack guard for this thread so it does not look as if
   // it has been set up.
   void ClearThread(const ExecutionAccess& lock);
 
-  bool IsStackOverflow();
-
 #define INTERRUPT_LIST(V)                                       \
   V(DEBUGBREAK, DebugBreak)                                     \
   V(DEBUGCOMMAND, DebugCommand)                                 \
   V(TERMINATE_EXECUTION, TerminateExecution)                    \
   V(GC_REQUEST, GC)                                             \
   V(INSTALL_CODE, InstallCode)                                  \
   V(API_INTERRUPT, ApiInterrupt)                                \
   V(DEOPT_MARKED_ALLOCATION_SITES, DeoptMarkedAllocationSites)
 
 #define V(NAME, Name)                                              \
@@ skipping 99 matching lines @@
     uintptr_t real_jslimit_;  // Actual JavaScript stack limit set for the VM.
     uintptr_t jslimit_;
     uintptr_t real_climit_;  // Actual C++ stack limit set for the VM.
     uintptr_t climit_;
 
     int nesting_;
     int postpone_interrupts_nesting_;
     int interrupt_flags_;
   };
 
+  class StackPointer {
+   public:
+    inline uintptr_t address() { return reinterpret_cast<uintptr_t>(this); }
+  };
+
   // TODO(isolates): Technically this could be calculated directly from a
   //                 pointer to StackGuard.
   Isolate* isolate_;
   ThreadLocal thread_local_;
 
   friend class Isolate;
   friend class StackLimitCheck;
   friend class PostponeInterruptsScope;
 
   DISALLOW_COPY_AND_ASSIGN(StackGuard);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_EXECUTION_H_