- Address warnings about 64-bit to 32-bit conversions.

runtime/bin/eventhandler_macos.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 "platform/globals.h"
 #if defined(TARGET_OS_MACOS)
 
 #include "bin/eventhandler.h"
 
 #include <errno.h>  // NOLINT
@@ skipping 238 matching lines @@
           sd->Close();
         }
         socket_map_.Remove(GetHashmapKeyFromFd(fd), GetHashmapHashFromFd(fd));
         delete sd;
         DartUtils::PostInt32(msg[i].dart_port, 1 << kDestroyedEvent);
       } else {
         if ((msg[i].data & (1 << kInEvent)) != 0 && sd->IsClosedRead()) {
           DartUtils::PostInt32(msg[i].dart_port, 1 << kCloseEvent);
         } else {
           // Setup events to wait for.
-          sd->SetPortAndMask(msg[i].dart_port, msg[i].data);
+          ASSERT((msg[i].data > 0) && (msg[i].data < kIntptrMax));
+          sd->SetPortAndMask(msg[i].dart_port,
+                             static_cast<intptr_t>(msg[i].data));
           UpdateKqueue(kqueue_fd_, sd);
         }
       }
     }
   }
 }
 
 #ifdef DEBUG_KQUEUE
 static void PrintEventMask(intptr_t fd, struct kevent* event) {
   Log::Print("%d ", static_cast<int>(fd));
@@ skipping 134 matching lines @@
   ASSERT(handler_impl != NULL);
   while (!handler_impl->shutdown_) {
     int64_t millis = handler_impl->GetTimeout();
     ASSERT(millis == kInfinityTimeout || millis >= 0);
     if (millis > kMaxInt32) millis = kMaxInt32;
     // NULL pointer timespec for infinite timeout.
     ASSERT(kInfinityTimeout < 0);
     struct timespec* timeout = NULL;
     struct timespec ts;
     if (millis >= 0) {
-      ts.tv_sec = millis / 1000;
-      ts.tv_nsec = (millis - (ts.tv_sec * 1000)) * 1000000;
+      int32_t millis32 = static_cast<int32_t>(millis);
+      int32_t secs = millis32 / 1000;
+      ts.tv_sec = secs;
+      ts.tv_nsec = (millis32 - (secs * 1000)) * 1000000;
       timeout = &ts;
     }
     intptr_t result = TEMP_FAILURE_RETRY(kevent(handler_impl->kqueue_fd_,
                                                 NULL,
                                                 0,
                                                 events,
                                                 kMaxEvents,
                                                 timeout));
     if (result == -1) {
       const int kBufferSize = 1024;
@@ skipping 39 matching lines @@
 
 uint32_t EventHandlerImplementation::GetHashmapHashFromFd(intptr_t fd) {
   // The hashmap does not support keys with value 0.
   return dart::Utils::WordHash(fd + 1);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)