--- jdk10/src/java.instrument/share/native/libinstrument/JarFacade.c	2014-10-02 10:59:00.105666221 +0200
+++ jdk10/src/java.instrument/share/native/libinstrument/JarFacade.c	2014-10-02 11:59:03.355452975 +0200
@@ -23,6 +23,7 @@
  * questions.
  */
 
+#include <ctype.h>
 #include <string.h>
 #include <stdlib.h>