--- gforth/engine/forth.h	2001/12/24 20:39:30	1.22
+++ gforth/engine/forth.h	2001/12/27 16:29:29	1.23
@@ -30,6 +30,13 @@
 #  define INDIRECT_THREADED
 #endif
 
+#if defined(GFORTH_DEBUGGING)
+#  undef USE_TOS
+#  undef USE_FTOS
+#  define USE_NO_TOS
+#  define USE_NO_FTOS
+#endif
+
 #include <limits.h>
 
 #if defined(NeXT)