[src/trunk]: src/lib/libcurses Don't try and refresh those parts of windows t...

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

details:   https://anonhg.NetBSD.org/src/rev/9c7c89e3eb5c
branches:  trunk
changeset: 485868:9c7c89e3eb5c
user:      jdc <jdc%NetBSD.org@localhost>
date:      Sun May 07 21:22:43 2000 +0000

description:
Don't try and refresh those parts of windows that are outside our terminal.

diffstat:

 lib/libcurses/refresh.c |  11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diffs (39 lines):

diff -r c12a24d9392c -r 9c7c89e3eb5c lib/libcurses/refresh.c
--- a/lib/libcurses/refresh.c   Sun May 07 20:47:10 2000 +0000
+++ b/lib/libcurses/refresh.c   Sun May 07 21:22:43 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: refresh.c,v 1.28 2000/04/29 02:51:16 mycroft Exp $     */
+/*     $NetBSD: refresh.c,v 1.29 2000/05/07 21:22:43 jdc Exp $ */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)refresh.c  8.7 (Berkeley) 8/13/94";
 #else
-__RCSID("$NetBSD: refresh.c,v 1.28 2000/04/29 02:51:16 mycroft Exp $");
+__RCSID("$NetBSD: refresh.c,v 1.29 2000/05/07 21:22:43 jdc Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -98,7 +98,8 @@
        if (win->flags & __CLEAROK)
                win->flags &= ~__CLEAROK;
 
-       for (wy = 0; wy < win->maxy; wy++) {
+       for (wy = 0, y_off = win->begy; wy < win->maxy &&
+           y_off < __virtscr->maxy; wy++, y_off++) {
 #ifdef DEBUG
                __CTRACE("wnoutrefresh: wy %d\tf: %d\tl:%d\tflags %x\n", wy,
                    *win->lines[wy]->firstchp,
@@ -109,8 +110,8 @@
                if (*win->lines[wy]->firstchp <= win->maxx + win->ch_off &&
                    *win->lines[wy]->lastchp >= win->ch_off) {
                        /* Copy line from "win" to "__virtscr". */
-                       for (wx = 0; wx < win->maxx; wx++) {
-                               x_off = wx + win->begx;
+                       for (wx = 0, x_off = win->begx; wx < win->maxx &&
+                           x_off < __virtscr->maxx; wx++, x_off++) {
                                __virtscr->lines[y_off]->line[x_off].attr =
                                    win->lines[wy]->line[wx].attr;
                                if (!(win->lines[wy]->line[wx].attr & __COLOR)