X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=ncurses%2Ftty%2Ftty_update.c;h=16fc17d27236ae04960e4fef13bcf5de7f69a549;hb=1078c0231b8a58fbd2dd56b6e0a81b19d6b07f77;hp=33c79c7c0d5118d6c756abefe562a4a25e30c72a;hpb=e6c7286022d8a7a7ea7f15a6ffa7f9addb00e42d;p=ncurses.git

diff --git a/ncurses/tty/tty_update.c b/ncurses/tty/tty_update.c
index 33c79c7c..16fc17d2 100644
--- a/ncurses/tty/tty_update.c
+++ b/ncurses/tty/tty_update.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2007,2008 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            *
@@ -74,7 +74,7 @@
 #include <ctype.h>
 #include <term.h>
 
-MODULE_ID("$Id: tty_update.c,v 1.242 2007/09/29 20:37:13 tom Exp $")
+MODULE_ID("$Id: tty_update.c,v 1.245 2008/05/03 22:43:04 tom Exp $")
 
 /*
  * This define controls the line-breakout optimization.  Every once in a
@@ -624,6 +624,10 @@ doupdate(void)
 
     T((T_CALLED("doupdate()")));
 
+    if (curscr == 0
+	|| newscr == 0)
+	returnCode(ERR);
+
 #ifdef TRACE
     if (USE_TRACEF(TRACE_UPDATE)) {
 	if (curscr->_clear)
@@ -641,7 +645,7 @@ doupdate(void)
 	SP->_fifohold--;
 
 #if USE_SIZECHANGE
-    if (SP->_endwin || _nc_handle_sigwinch(FALSE)) {
+    if (SP->_endwin || _nc_handle_sigwinch(SP)) {
 	/*
 	 * This is a transparent extension:  XSI does not address it,
 	 * and applications need not know that ncurses can do it.
@@ -650,7 +654,7 @@ doupdate(void)
 	 * (this can happen in an xterm, for example), and resize the
 	 * ncurses data structures accordingly.
 	 */
-	_nc_update_screensize();
+	_nc_update_screensize(SP);
     }
 #endif