NetBSD Problem Report #53733
From www@NetBSD.org Sun Nov 18 23:53:39 2018
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for <gnats-bugs@gnats.NetBSD.org>; Sun, 18 Nov 2018 23:53:39 +0000 (UTC)
Message-Id: <20181118235338.9C3B27A1D7@mollari.NetBSD.org>
Date: Sun, 18 Nov 2018 23:53:38 +0000 (UTC)
From: uwe@NetBSD.org
Reply-To: uwe@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: curses wbkgrnd() doesn't apply new background
X-Send-Pr-Version: www-1.0
>Number: 53733
>Category: lib
>Synopsis: curses wbkgrnd() doesn't apply new background
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: lib-bug-people
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sun Nov 18 23:55:00 +0000 2018
>Closed-Date: Mon Apr 25 22:02:29 +0000 2022
>Last-Modified: Mon Apr 25 22:02:29 +0000 2022
>Originator: Valery Ushakov
>Release: NetBSD 8.99.19
>Organization:
>Environment:
>Description:
wbkgrnd() does wbkgrndset() and also should apply the new background
to existing contents of the window. Ours doesn't.
>How-To-Repeat:
#define NCURSES_WIDECHAR 1 /* when compiling against ncurses */
#include <curses.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int
main()
{
WINDOW *scrw = initscr();
if (scrw == NULL)
errx(EXIT_FAILURE, "initscr failed");
mvaddstr(0, 0, "Hello world\n");
refresh();
sleep(1);
cchar_t bg;
wgetbkgrnd(stdscr, &bg);
wchar_t bg_wch;
attr_t bg_attr;
short bg_color_pair;
getcchar(&bg, &bg_wch, &bg_attr, &bg_color_pair, NULL);
bg_wch = '-';
setcchar(&bg, &bg_wch, bg_attr, bg_color_pair, NULL);
bkgrnd(&bg);
refresh();
sleep(1);
endwin();
return EXIT_SUCCESS;
}
$ cc -o bkgrnd bkgrnd.c -lcurses
$ ./bkgrnd
Compare to devel/ncursesw
$ cc -o bkgrnd -I/usr/pkg/include/ncursesw -I/usr/pkg/include bkgrnd.c -L/usr/pkg/lib -Wl,--rpath=/usr/pkg/lib -lncursesw
$ ./bkgrnd
Ncurses fills the screen with minus signs as expected.
Note that old wbkgd() function does the right thing.
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed
State-Changed-By: blymn@NetBSD.org
State-Changed-When: Mon, 25 Apr 2022 22:02:29 +0000
State-Changed-Why:
Fixed in another PR.
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.46 2020/01/03 16:35:01 leot Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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