Fix signature of Dart_SetIntegerReturnValue.

runtime/vm/dart_api_impl.cc

 // 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.
 
 #include "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "platform/assert.h"
 #include "vm/bigint_operations.h"
@@ skipping 3838 matching lines @@
 
 
 DART_EXPORT void Dart_SetBooleanReturnValue(Dart_NativeArguments args,
                                             bool retval) {
   NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args);
   arguments->SetReturn(retval ? Bool::True() : Bool::False());
 }
 
 
 DART_EXPORT void Dart_SetIntegerReturnValue(Dart_NativeArguments args,
-                                            intptr_t retval) {
+                                            int64_t retval) {
   NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args);
   Isolate* isolate = arguments->isolate();
   CHECK_ISOLATE(isolate);
   if (Smi::IsValid64(retval)) {
     Api::SetSmiReturnValue(arguments, retval);
   } else {
     // Slow path for Mints and Bigints.
     ASSERT_CALLBACK_STATE(isolate);
     Api::SetIntegerReturnValue(arguments, retval);
   }
@@ skipping 481 matching lines @@
   }
   {
     NoGCScope no_gc;
     RawObject* raw_obj = obj.raw();
     isolate->heap()->SetPeer(raw_obj, peer);
   }
   return Api::Success();
 }
 
 }  // namespace dart