--- old/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c	2018-11-26 16:07:36.352769181 +0530
+++ new/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c	2018-11-26 16:07:36.084903181 +0530
@@ -747,7 +747,8 @@
 static void wakeUp() {
     static char wakeUp_char = 'p';
     if (!isMainThread() && awt_pipe_inited) {
-        write ( AWT_WRITEPIPE, &wakeUp_char, 1 );
+        ssize_t res = write ( AWT_WRITEPIPE, &wakeUp_char, 1 );
+        (void)res;
     }
 }