Don't allow oob message interrupts while executing constant expressions in the parser.

runtime/vm/isolate.h

 // 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.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 268 matching lines @@
     kVMInterrupt = 0x1,  // Internal VM checks: safepoints, store buffers, etc.
     kMessageInterrupt = 0x2,  // An interrupt to process an out of band message.
 
     kInterruptsMask = (kVMInterrupt | kMessageInterrupt),
   };
 
   void ScheduleInterrupts(uword interrupt_bits);
   RawError* HandleInterrupts();
   uword GetAndClearInterrupts();
 
+  void DeferMessageInterrupts();
+  void RestoreMessageInterrupts();
+
   // Marks all libraries as loaded.
   void DoneLoading();
 
   bool MakeRunnable();
   void Run();
 
   MessageHandler* message_handler() const { return message_handler_; }
   void set_message_handler(MessageHandler* value) { message_handler_ = value; }
 
   bool is_runnable() const { return is_runnable_; }
@@ skipping 438 matching lines @@
   ApiState* api_state_;
   Debugger* debugger_;
   bool resume_request_;
   int64_t last_resume_timestamp_;
   bool has_compiled_code_;  // Can check that no compilation occured.
   Flags flags_;
   Random random_;
   Simulator* simulator_;
   Mutex* mutex_;  // protects stack_limit_, saved_stack_limit_, compiler stats.
   uword saved_stack_limit_;
+  uword deferred_interrupts_mask_;
+  uword deferred_interrupts_;
   uword stack_overflow_flags_;
   int32_t stack_overflow_count_;
   MessageHandler* message_handler_;
   IsolateSpawnState* spawn_state_;
   bool is_runnable_;
   Dart_GcPrologueCallback gc_prologue_callback_;
   Dart_GcEpilogueCallback gc_epilogue_callback_;
   intptr_t defer_finalization_count_;
   DeoptContext* deopt_context_;
 
@@ skipping 100 matching lines @@
   friend class Reusable##name##HandleScope;
 REUSABLE_HANDLE_LIST(REUSABLE_FRIEND_DECLARATION)
 #undef REUSABLE_FRIEND_DECLARATION
 
   friend class GCMarker;  // VisitObjectPointers
   friend class SafepointHandler;
   friend class Scavenger;  // VisitObjectPointers
   friend class ServiceIsolate;
   friend class Thread;
   friend class Timeline;
+  friend class IsolateTestHelper;
 
   DISALLOW_COPY_AND_ASSIGN(Isolate);
 };
 
 
 // When we need to execute code in an isolate, we use the
 // StartIsolateScope.
 class StartIsolateScope {
  public:
   explicit StartIsolateScope(Isolate* new_isolate)
@@ skipping 114 matching lines @@
   intptr_t* spawn_count_;
 
   Isolate::Flags isolate_flags_;
   bool paused_;
   bool errors_are_fatal_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_