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Re: Problems with <tgmath.h>
On Fri, Dec 17, 1999 at 08:16:41AM -0800, Ulrich Drepper wrote:
> Daniel Jacobowitz <drow@false.org> writes:
>
> > In which case, I would think it appropriate for _ISOC9X_SOURCE
> > undefined to be an error in tgmath.h.
>
> It's also undefined to include unistd.h without defining _POSIX_SOURCE
> or something which includes it. If you are using the header you must
> know where it comes from. Otherwise you wouldn't use it.
Could there perhaps be a comment in <tgmath.h> indicating this?
I disagree with "you must know where it comes from"; very frequently, I
need a function that does something, and I grep /usr/include a bit to
see if there is a standard library function that does what I want it
to. If I find something in <tgmath.h> that way I won't know that it is
part of ISO c9x, and nothing in the file indicates that it requires ISO
c9x to be defined; just a comment saying that it is according to
section 7.9 of the standard.
Why allow gratuitous programmer stupidity? If it is undefined to
include <tgmath.h> without _ISOC9X_SOURCE, make it an error!
Dan
/--------------------------------\ /--------------------------------\
| Daniel Jacobowitz |__| SCS Class of 2002 |
| Debian GNU/Linux Developer __ Carnegie Mellon University |
| dan@debian.org | | dmj+@andrew.cmu.edu |
\--------------------------------/ \--------------------------------/