--- old/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c	2017-10-13 18:36:22.788583317 -0700
+++ new/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c	2017-10-13 18:36:22.452580055 -0700
@@ -747,7 +747,7 @@
 static void wakeUp() {
     static char wakeUp_char = 'p';
     if (!isMainThread() && awt_pipe_inited) {
-        write ( AWT_WRITEPIPE, &wakeUp_char, 1 );
+        int ret = write ( AWT_WRITEPIPE, &wakeUp_char, 1 );
     }
 }