- Fix a lot of warnings generated by -Wshorten-64-to-32

runtime/platform/thread_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 "platform/thread.h"
 
 #include <sys/errno.h>  // NOLINT
@@ skipping 279 matching lines @@
 Monitor::WaitResult Monitor::WaitMicros(int64_t micros) {
   // TODO(iposva): Do we need to track lock owners?
   Monitor::WaitResult retval = kNotified;
   if (micros == kNoTimeout) {
     // Wait forever.
     int result = pthread_cond_wait(data_.cond(), data_.mutex());
     VALIDATE_PTHREAD_RESULT(result);
   } else {
     struct timespec ts;
     int64_t secs = micros / kMicrosecondsPerSecond;
+    if (secs > kMaxInt32) {
+      // Avoid truncation of overly large timeout values.
+      secs = kMaxInt32;
+    }
     int64_t nanos =
         (micros - (secs * kMicrosecondsPerSecond)) * kNanosecondsPerMicrosecond;
-    ts.tv_sec = secs;
-    ts.tv_nsec = nanos;
+    ts.tv_sec = static_cast<int32_t>(secs);
+    ts.tv_nsec = static_cast<long>(nanos);  // NOLINT (long used in timespec).
     int result = pthread_cond_timedwait_relative_np(data_.cond(),
                                                     data_.mutex(),
                                                     &ts);
     ASSERT((result == 0) || (result == ETIMEDOUT));
     if (result == ETIMEDOUT) {
       retval = kTimedOut;
     }
   }
   return retval;
 }
 
 
 void Monitor::Notify() {
   // TODO(iposva): Do we need to track lock owners?
   int result = pthread_cond_signal(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 
 void Monitor::NotifyAll() {
   // TODO(iposva): Do we need to track lock owners?
   int result = pthread_cond_broadcast(data_.cond());
   VALIDATE_PTHREAD_RESULT(result);
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_MACOS)