[src/trunk]: src/lib/libcurses _wnoutrefresh - fix current position checks fo...

[uwe <uwe%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/eb12636ed647
branches:  trunk
changeset: 995799:eb12636ed647
user:      uwe <uwe%NetBSD.org@localhost>
date:      Sun Jan 06 03:59:17 2019 +0000

description:
_wnoutrefresh - fix current position checks for pads

maxy is an absolute value and should not be adjusted for begy when we
check also absolute cury.  Note that this change does not affect
calculations for normal windows as for them we always pass zero for
begy.  Ditto for x.

diffstat:

 lib/libcurses/refresh.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (31 lines):

diff -r 130968c6d1c5 -r eb12636ed647 lib/libcurses/refresh.c
--- a/lib/libcurses/refresh.c   Sun Jan 06 03:46:11 2019 +0000
+++ b/lib/libcurses/refresh.c   Sun Jan 06 03:59:17 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: refresh.c,v 1.103 2019/01/06 03:46:11 uwe Exp $        */
+/*     $NetBSD: refresh.c,v 1.104 2019/01/06 03:59:17 uwe Exp $        */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)refresh.c  8.7 (Berkeley) 8/13/94";
 #else
-__RCSID("$NetBSD: refresh.c,v 1.103 2019/01/06 03:46:11 uwe Exp $");
+__RCSID("$NetBSD: refresh.c,v 1.104 2019/01/06 03:59:17 uwe Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -218,10 +218,10 @@
 
        /* Check that cursor position on "win" is valid for "__virtscr" */
        if (dwin->cury + wbegy - begy < screen->__virtscr->maxy &&
-           dwin->cury + wbegy - begy >= 0 && dwin->cury < maxy - begy)
+           dwin->cury + wbegy - begy >= 0 && dwin->cury < maxy)
                screen->__virtscr->cury = dwin->cury + wbegy - begy;
        if (dwin->curx + wbegx - begx < screen->__virtscr->maxx &&
-           dwin->curx + wbegx - begx >= 0 && dwin->curx < maxx - begx)
+           dwin->curx + wbegx - begx >= 0 && dwin->curx < maxx)
                screen->__virtscr->curx = dwin->curx + wbegx - begx;
 
        /* Copy the window flags from "win" to "__virtscr" */