Do not notify debugger on stack overflow

runtime/vm/exceptions.cc

 // Copyright (c) 2011, 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/exceptions.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/flags.h"
@@ skipping 567 matching lines @@
       OS::Print("type error.\n");
     }
   }
   // Throw TypeError or CastError instance.
   Exceptions::ThrowByType(exception_type, args);
   UNREACHABLE();
 }
 
 
 void Exceptions::Throw(Isolate* isolate, const Instance& exception) {
-  isolate->debugger()->SignalExceptionThrown(exception);
+  // Do not notify debugger on stack overflow and out of memory exceptions.
+  // The VM would crash when the debugger calls back into the VM to
+  // get values of variables.
+  if (exception.raw() != isolate->object_store()->out_of_memory() &&
+      exception.raw() != isolate->object_store()->stack_overflow()) {
+    isolate->debugger()->SignalExceptionThrown(exception);
+  }
   // Null object is a valid exception object.
   ThrowExceptionHelper(isolate, exception, Instance::Handle(isolate), false);
 }
 
 
 void Exceptions::ReThrow(Isolate* isolate,
                          const Instance& exception,
                          const Instance& stacktrace) {
   // Null object is a valid exception object.
   ThrowExceptionHelper(isolate, exception, stacktrace, true);
@@ skipping 157 matching lines @@
 
 // Throw JavascriptCompatibilityError exception.
 void Exceptions::ThrowJavascriptCompatibilityError(const char* msg) {
   const Array& exc_args = Array::Handle(Array::New(1));
   const String& msg_str = String::Handle(String::New(msg));
   exc_args.SetAt(0, msg_str);
   Exceptions::ThrowByType(Exceptions::kJavascriptCompatibilityError, exc_args);
 }
 
 }  // namespace dart