From owner-freebsd-hackers  Fri May  7 17:30:45 1999
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Date: Sat, 8 May 1999 10:00:37 +0930
From: Greg Lehey <grog@lemis.com>
To: Ludo Koren <ludo_koren@tempest.sk>
Cc: freebsd-hackers@FreeBSD.ORG
Subject: ncurses problems (was: no subject)
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References: <199905071646.SAA32811@t15.tempest.sk>
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In-Reply-To: <199905071646.SAA32811@t15.tempest.sk>; from Ludo Koren on Fri, May 07, 1999 at 06:46:13PM +0200
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On Friday,  7 May 1999 at 18:46:13 +0200, Ludo Koren wrote:
> 
> Hi.
> 
> I am running 3.1-STABLE and developing a program which uses
> ncurses. After localization of the problem, I minimized it to the
> following: 
> 
> #include <stdio.h>
> #include <ncurses.h>
> #include <signal.h>
> 
> 
> int main()
> {
> 	struct sigaction act;
> 
> 	act.sa_handler = SIG_IGN;
> 	act.sa_flags = 0;
> 	sigemptyset(&act.sa_mask);
> 	sigaction(SIGINT,&act,0);
> 
> 	sigaction(SIGINT,0,&act);
> 	printf("%d\n", act.sa_handler == SIG_IGN);
> 
> 	initscr();
> 
> 	sigaction(SIGINT,0,&act);
> 	printf("%d\n", act.sa_handler == SIG_IGN);
> 
> 	return 0;
> }

You've missed out an important part: which library are you using?
This is what I get:

  $ cc -g -Wall  bar.c  -o bar -lcurses 
  $ ./bar
  1
  1
  $ cc -g -Wall  bar.c  -o bar -lncurses
  $ ./bar
  1
  0

> Could somebody point, why the first output is 1 and the second is 0?
> Is it bug or feature.

It looks like ncurses is setting its own SIGINT handler.  I suppose
you could think of this as a feature.  Does it worry you?

Greg
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