--- old/src/java.base/unix/classes/java/lang/ProcessImpl.java	2018-12-07 17:55:14.000000000 +0000
+++ new/src/java.base/unix/classes/java/lang/ProcessImpl.java	2018-12-07 17:55:13.000000000 +0000
@@ -412,7 +412,7 @@
                          new BufferedOutputStream(
                              new FileOutputStream(newFileDescriptor(fds[0])));
  
-                 stdout = (fds[1] == -1) ?
+                 stdout = (fds[1] == -1 || forceNullOutputStream) ?
                           ProcessBuilder.NullInputStream.INSTANCE :
                           new BufferedInputStream(
                               stdout_inner_stream =
@@ -446,7 +446,7 @@
                          ProcessBuilder.NullOutputStream.INSTANCE :
                          new ProcessPipeOutputStream(fds[0]);
  
-                 stdout = (fds[1] == -1) ?
+                 stdout = (fds[1] == -1 || forceNullOutputStream) ?
                           ProcessBuilder.NullInputStream.INSTANCE :
                           new DeferredCloseProcessPipeInputStream(fds[1]);