From f1b76ec09b463f0208be7c19fa6365d2fe02a9f0 Mon Sep 17 00:00:00 2001
From: Jim Blandy <jimb@redhat.com>
Date: Sat, 7 Nov 1992 07:35:20 +0000
Subject: [PATCH] * lisp.h [not MULTI_FRAME]: Don't declare the Lisp_Frame tag.

---
 src/lisp.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/lisp.h b/src/lisp.h
index f5227b76a3c..d355837067b 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -86,9 +86,13 @@ enum Lisp_Type
        XOBJFWD(obj) points to the Lisp_Object variable. */
     Lisp_Objfwd,
 
+#ifdef MULTI_FRAME
     /* Pointer to a vector-like object describing a display frame
-       on which Emacs can display a window hierarchy.  */
+       on which Emacs can display a window hierarchy.  We don't define
+       this unless MULTI_FRAME is defined; this helps the compiler catch
+       code that won't work on a non-MULTI_FRAME configuration.  */
     Lisp_Frame,
+#endif
 
     /* Used when a FILE * value needs to be passed
        in an argument of type Lisp_Object.