X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=ncurses%2Ftty%2Ftty_update.c;h=2dc93830ce95664612c4a9048b93c2faf4219ca8;hb=331f875facea2b7897c1ce0425ce0d111cc4175b;hp=f0d2369c18d6e65fedf3f817d5dfddded575f268;hpb=f79b52fddd95c7a6f1ead29ef9c39eb8cdf60795;p=ncurses.git

diff --git a/ncurses/tty/tty_update.c b/ncurses/tty/tty_update.c
index f0d2369c..2dc93830 100644
--- a/ncurses/tty/tty_update.c
+++ b/ncurses/tty/tty_update.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -82,7 +82,7 @@
 
 #include <ctype.h>
 
-MODULE_ID("$Id: tty_update.c,v 1.264 2010/12/19 01:21:02 tom Exp $")
+MODULE_ID("$Id: tty_update.c,v 1.265 2011/05/28 21:51:20 tom Exp $")
 
 /*
  * This define controls the line-breakout optimization.  Every once in a
@@ -677,6 +677,9 @@ TINFO_DOUPDATE(NCURSES_SP_DCL0)
 
     T((T_CALLED("_nc_tinfo:doupdate(%p)"), (void *) SP_PARM));
 
+    if (SP_PARM == 0)
+	returnCode(ERR);
+
 #if !USE_REENTRANT
     /*
      * It is "legal" but unlikely that an application could assign a new