% svn diff --diff-cmd diff -x '-u -p'
Index: process.c
===================================================================
--- process.c	(revision 33962)
+++ process.c	(working copy)
@@ -5709,6 +5709,9 @@ Init_process(void)
 
     rb_mProcess = rb_define_module("Process");
 
+    rb_define_const(rb_mProcess, "EXIT_SUCCESS", INT2FIX(EXIT_SUCCESS));
+    rb_define_const(rb_mProcess, "EXIT_FAILURE", INT2FIX(EXIT_FAILURE));
+
 #ifdef WNOHANG
     /* see Process.wait */
     rb_define_const(rb_mProcess, "WNOHANG", INT2FIX(WNOHANG));