Fix build fail on mac.

runtime/vm/object.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 "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/cpu.h"
@@ skipping 11270 matching lines @@
   return Mint::NewCanonical(value);
 }
 
 
 // dart2js represents integers as double precision floats. It does this using
 // a sign bit and 53 fraction bits. This gives us the range
 // -2^54 - 1 ... 2^54 - 1, i.e. the same as a 54-bit signed integer
 // without the most negative number. Thus, here we check if the value is
 // a 54-bit signed integer and not -2^54
 static bool Is54BitNoMinInt(int64_t value) {
-  return (Utils::IsInt(54, value)) && (value != (-0x1FFFFFFFFFFFFF - 1));
+  return (Utils::IsInt(54, value)) && (value != (-0x1FFFFFFFFFFFFFLL - 1));
 }
 
 
 RawInteger* Integer::New(int64_t value, Heap::Space space) {
   if ((value <= Smi::kMaxValue) && (value >= Smi::kMinValue)) {
     return Smi::New(value);
   }
   if (FLAG_throw_on_javascript_int_overflow && !Is54BitNoMinInt(value)) {
     const Integer &i = Integer::Handle(Mint::New(value));
     ThrowJavascriptIntegerOverflow(i);
@@ skipping 3099 matching lines @@
 }
 
 
 void MirrorReference::PrintToJSONStream(JSONStream* stream, bool ref) const {
   stream->OpenObject();
   stream->CloseObject();
 }
 
 
 }  // namespace dart