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

src/d8-posix.cc

Index: src/d8-posix.cc
===================================================================
--- src/d8-posix.cc	(revision 2025)
+++ src/d8-posix.cc	(working copy)
@@ -280,7 +280,10 @@
   // 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).
 }