Index: generic/nsfInt.h
===================================================================
diff -u -r3e2056578f71e9fb14f5c1ee35a9d626747eb285 -r8c8969ab850d118f76305689bd95e980b8f4543f
--- generic/nsfInt.h	(.../nsfInt.h)	(revision 3e2056578f71e9fb14f5c1ee35a9d626747eb285)
+++ generic/nsfInt.h	(.../nsfInt.h)	(revision 8c8969ab850d118f76305689bd95e980b8f4543f)
@@ -810,6 +810,10 @@
 #if defined(NSF_PROFILE)
   NsfProfile profile;
 #endif
+#if defined(NSF_STACKCHECK)
+  void *bottomOfStack;
+  void *maxStack;
+#endif
   NsfStringIncrStruct iss; /* used for new to create new symbols */
   short guardCount;        /* keep track of guard invocations */
   ClientData clientData;