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Re: second newterm with sp_funcs enabled returns NULL pointer

From: Thomas Dickey
Subject: Re: second newterm with sp_funcs enabled returns NULL pointer
Date: Sat, 26 Apr 2014 13:07:01 -0400
User-agent: Mutt/1.5.20 (2009-06-14)

On Tue, Apr 22, 2014 at 07:02:46PM +0200, Thomas Beierlein wrote:
> Hi,
> I am maintaining an old ncurses program for some years (tlf) which uses
> two terminal screens. Last days I got a bug report that the second
> screen does not work in OpenSUSE environment. A quick check showed that
> libncurses (5.9) got build there with --enable-sp-funcs. Digging a
> little further only a first call to newterm() returns a valid SCREEN*,
> a second call to establish a second terminal screen always returns
> NULL. 
> That can also be shown by the following simple program:
> -- 
> #include <ncurses.h>
> SCREEN *x;
> SCREEN *y;
> int main() {
>  x = newterm(NULL, stdout, stdin);
>  y = newterm(NULL, stdout, stdin);

I can reproduce this, looks like a bug (am looking into that, now).

(as an aside, I would not expect to have two screens open for the same I/O -
perhaps tlf doesn't do _that_)

Thomas E. Dickey <address@hidden>

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