--- src/window.c.orig	2004-02-26 23:47:07.000000000 -0500
+++ src/window.c	2004-02-26 23:46:24.000000000 -0500
@@ -1583,7 +1583,11 @@ int move;
   x = w->x1 + w->curx;
   oldx = w->curx;
   len = w->xs - w->curx;
+#ifdef NO_BOUNDS_CHECKING
   memcpy(buf, gmap + COLS * y + x, sizeof(ELM) * len);
+#else
+  memcpy(buf, gmap + COLS * y + x, ((sizeof(ELM) * len) < sizeof(buf)) ? (sizeof(ELM) * len) : sizeof(buf) );
+#endif
 
   /* Now, put the new character on screen. */
   wputc(w, c);