- Add a _fatal helper function into dart:core, so that we can

runtime/lib/object.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/bootstrap_natives.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/code_patcher.h"
 #include "vm/exceptions.h"
 #include "vm/heap.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/report.h"
 #include "vm/stack_frame.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
 DECLARE_FLAG(bool, enable_type_checks);
 DECLARE_FLAG(bool, trace_type_checks);
 DECLARE_FLAG(bool, warn_on_javascript_compatibility);
 
+// Helper function in stacktrace.cc.
+void _printCurrentStacktrace();
+
+DEFINE_NATIVE_ENTRY(DartCore_fatal, 1) {
+  // The core library code entered an unrecoverable state.
+  const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
+  const char* msg = instance.ToCString();
+  OS::PrintErr("Fatal error in dart:core\n");
+  _printCurrentStacktrace();
+  FATAL(msg);
+  return Object::null();
+}
+
 
 DEFINE_NATIVE_ENTRY(Object_equals, 1) {
   // Implemented in the flow graph builder.
   UNREACHABLE();
   return Object::null();
 }
 
 
 DEFINE_NATIVE_ENTRY(Object_getHash, 1) {
   const Instance& instance = Instance::CheckedHandle(arguments->NativeArgAt(0));
@@ skipping 267 matching lines @@
   // Currently all errors are Dart instances, e.g. I/O errors
   // created by deferred loading code. LanguageErrors from
   // failed loading or finalization attempts are propagated and result
   // in the isolate's death.
   const Instance& error = Instance::Handle(prefix.LoadError());
   return error.raw();
 }
 
 
 }  // namespace dart