Use casts to work around bug in Android TEMP_FAILURE_RETRY macro

runtime/bin/socket_android.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 <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 
@@ skipping 159 matching lines @@
   return buffer;
 }
 
 
 intptr_t ServerSocket::CreateBindListen(const char* host,
                                         intptr_t port,
                                         intptr_t backlog) {
   intptr_t fd;
   struct sockaddr_in server_address;
 
-  in_addr_t s_addr = TEMP_FAILURE_RETRY(inet_addr(host));
+  // Cast to/from int to work-around Android bug:
+  // http://code.google.com/p/android/issues/detail?id=37426
+  // unistd.h TEMP_FAILURE_RETRY generates warning when used with syscall that
+  // returns unsigned int.
+  in_addr_t s_addr = static_cast<in_addr_t>(
+      TEMP_FAILURE_RETRY(static_cast<int>(inet_addr(host))));
   if (s_addr == INADDR_NONE) {
     return -5;
   }
 
   fd = TEMP_FAILURE_RETRY(socket(AF_INET, SOCK_STREAM, 0));
   if (fd < 0) {
     fprintf(stderr, "Error CreateBind: %s\n", strerror(errno));
     return -1;
   }
 
@@ skipping 46 matching lines @@
       // error. We got woken up from the poll on the listening socket,
       // but there is no connection ready to be accepted.
       ASSERT(kTemporaryFailure != -1);
       socket = kTemporaryFailure;
     }
   } else {
     FDUtils::SetNonBlocking(socket);
   }
   return socket;
 }