Report stack overflow to debugger after stack is unwound

runtime/bin/dbg_message.cc

 // Copyright (c) 2012, 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 "bin/dbg_connection.h"
 #include "bin/dbg_message.h"
 #include "bin/dartutils.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
 
@@ skipping 429 matching lines @@
   return NULL;
 }
 
 
 static void FormatLocationFromTrace(dart::TextBuffer* msg,
                                     Dart_StackTrace trace,
                                     const char* prefix) {
   intptr_t trace_len = 0;
   Dart_Handle res = Dart_StackTraceLength(trace, &trace_len);
   ASSERT_NOT_ERROR(res);
+  if (trace_len == 0) {
+    return;
+  }
   Dart_ActivationFrame frame;
   res = Dart_GetActivationFrame(trace, 0, &frame);
   ASSERT_NOT_ERROR(res);
   Dart_CodeLocation location;
   res = Dart_ActivationFrameGetLocation(frame, NULL, NULL, &location);
   ASSERT_NOT_ERROR(res);
   if (!Dart_IsNull(location.script_url)) {
     ASSERT(Dart_IsString(location.script_url));
     msg->Printf("%s\"location\": { \"url\":", prefix);
     FormatEncodedString(msg, location.script_url);
@@ skipping 948 matching lines @@
     } else {
       ASSERT(kind == kShutdown);
       RemoveIsolateMsgQueue(isolate_id);
     }
   }
   Dart_ExitScope();
 }
 
 }  // namespace bin
 }  // namespace dart