--- old/src/java.desktop/unix/native/common/java2d/x11/X11TextRenderer_md.c	2017-10-13 18:36:20.744563472 -0700
+++ new/src/java.desktop/unix/native/common/java2d/x11/X11TextRenderer_md.c	2017-10-13 18:36:20.588561957 -0700
@@ -222,7 +222,7 @@
         return;
     }
 
-    xgc = (GC)gc;
+    xgc = (GC) jlong_to_ptr(gc);
     if (xgc == NULL) {
         return;
     }