Re: address@hidden: Re: ncurses and mpfr don't play well together]

[Thomas Dickey]

On Tue, 4 Jan 2005, Mike Castle wrote:

> Consider yourself notified.

it's not an FAQ, but something that many developers are aware of

> Is this really an ncurses issues or part of all curses implementations?

"All".  AIX curses is more of a problem since its curses.h includes 
term.h; the problem is because term.h #define's symbols that match the 
names used for terminfo capabilities.  Most of those are not troublesome, 
but some that come to mind include: lines, columns, newline and of course 
tab.  I've also had to work around max_pairs and other less common 
symbols.

Programs that include term.h rely upon this; programmers that include 
term.h without being aware of this should read the header file and 
consider its implications.

> mrc
> ----- Forwarded message from Patrick Pelissier <address@hidden> -----
>
> X-Amavix: Anti-virus check done by ClamAV
> X-Amavix: Scanned by Amavix
> Date: Tue, 4 Jan 2005 09:44:36 +0100
> From: Patrick Pelissier <address@hidden>
> To: Mike Castle <address@hidden>
> Cc: address@hidden
> Subject: Re: ncurses and mpfr don't play well together
> In-Reply-To: <address@hidden>
> X-ELNK-AV: 0
>
> On Fri, Dec 31, 2004 at 12:46:14 -0800, Mike Castle wrote:
> > With a recent vintage of ncurses and mpfr-2.1.0 (also happens with a fairly
> > recently version of mpfr-2.2.0 pulled from cvs as shipped with
> > genius-0.7.2), the following causes problems:
> >
> > address@hidden:43pm]~(510) cat t.c
> > #include <term.h>
> > #include <mpfr.h>
> > address@hidden:43pm]~(511) gcc -c t.c
> > In file included from t.c:2:
> > /usr/include/mpfr.h:438: error: parse error before '->' token
> >
> >
> > Turns out that term.h has the following lines of interest:
> >
> > #define CUR cur_term->type.
> > #define tab                            CUR Strings[134]
> >
> > And mpfr.h has:
> >
> > int mpfr_sum _MPFR_PROTO ((mpfr_ptr, mpfr_ptr __gmp_const tab[], unsigned
> > long,
> >                            mpfr_rnd_t));
> >
> >
> > Which causes:
> >
> > address@hidden:44pm]~(514) gcc -c -save-temps t.c
> > In file included from t.c:2:
> > /usr/include/mpfr.h:438: error: parse error before '->' token
> > address@hidden:44pm]~(515) grep mpfr_sum t.i
> > int mpfr_sum (mpfr_ptr, mpfr_ptr const cur_term->type. Strings[134][], unsigned 
> > long, mpfr_rnd_t);
> >
> >
> > My local solution was to replace tab with t_ab as a work around.
>
> Just remove tab should work too.
>
> But it is a bug of ncurses, which is not namespace clean.
> You better report it to the developpers of ncurses.
>
> Sincerely,
>  Patrick Pelissier
>
> ----- End forwarded message -----
>
> --
>     Mike Castle      address@hidden      www.netcom.com/~dalgoda/
>    We are all of us living in the shadow of Manhattan.  -- Watchmen
> fatal ("You are in a maze of twisty compiler features, all different"); -- gcc
>
>
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--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net