From: Karl Heuer <kwzh@gnu.org>
Date: Fri, 13 Jan 1995 00:02:43 +0000 (+0000)
Subject: Don't allow MARKBIT and DONT_COPY_FLAG to be the same bit.
X-Git-Tag: emacs-19.34~5444
X-Git-Url: https://code.delx.au/gnu-emacs/commitdiff_plain/25be741f21c18a33f7b92a9a7c24002566a6b455?ds=sidebyside

Don't allow MARKBIT and DONT_COPY_FLAG to be the same bit.
---

diff --git a/src/alloc.c b/src/alloc.c
index 5776a2be92..29e0ab46ea 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -118,6 +118,10 @@ Lisp_Object memory_signal_data;
 #define DONT_COPY_FLAG 1
 #endif /* no DONT_COPY_FLAG  */
 
+#if DONT_COPY_FLAG == MARKBIT
+you lose
+#endif
+
 /* Buffer in which we save a copy of the C stack at each GC.  */
 
 char *stack_copy;