Do not ignore the result from calls to write(). This avoids a warning...

src/d8-posix.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 262 matching lines @@
   close(exec_error_fds[kReadFD]);  // Don't need this in the child.
   close(stdout_fds[kReadFD]);      // Don't need this in the child.
   close(1);                        // Close stdout.
   dup2(stdout_fds[kWriteFD], 1);   // Dup pipe fd to stdout.
   close(stdout_fds[kWriteFD]);     // Don't need the original fd now.
   fcntl(exec_error_fds[kWriteFD], F_SETFD, FD_CLOEXEC);
   execvp(exec_args.arg0(), exec_args.arg_array());
   // Only get here if the exec failed.  Write errno to the parent to tell
   // them it went wrong.  If it went well the pipe is closed.
   int err = errno;
-  write(exec_error_fds[kWriteFD], &err, sizeof(err));
+  int bytes_written;
+  do {
+    bytes_written = write(exec_error_fds[kWriteFD], &err, sizeof(err));
+  } while (bytes_written == -1 && errno == EINTR);
   // Return (and exit child process).
 }
 
 
 // Runs in the parent process.  Checks that the child was able to exec (closing
 // the file desriptor), or reports an error if it failed.
 static bool ChildLaunchedOK(int* exec_error_fds) {
   int bytes_read;
   int err;
   do {
@@ skipping 365 matching lines @@
 void Shell::AddOSMethods(Handle<ObjectTemplate> os_templ) {
   os_templ->Set(String::New("system"), FunctionTemplate::New(System));
   os_templ->Set(String::New("chdir"), FunctionTemplate::New(ChangeDirectory));
   os_templ->Set(String::New("setenv"), FunctionTemplate::New(SetEnvironment));
   os_templ->Set(String::New("umask"), FunctionTemplate::New(SetUMask));
   os_templ->Set(String::New("mkdirp"), FunctionTemplate::New(MakeDirectory));
   os_templ->Set(String::New("rmdir"), FunctionTemplate::New(RemoveDirectory));
 }
 
 }  // namespace v8