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From: Rich Felker <dalias@libc.org>
To: musl@lists.openwall.com
Subject: Re: [PATCH] stdio: implement fopencookie(3)
Date: Tue, 10 Oct 2017 22:08:08 -0400	[thread overview]
Message-ID: <20171011020808.GK1627@brightrain.aerifal.cx> (raw)
In-Reply-To: <20171010234015.774c6ddd@inria.fr>

On Tue, Oct 10, 2017 at 11:40:15PM +0200, Jens Gustedt wrote:
> Hello Rich,
> 
> On Tue, 10 Oct 2017 16:56:54 -0400 Rich Felker <dalias@libc.org> wrote:
> 
> > Also note that while standard functions in POSIX can additionally be
> > defined as function-like macros, they can't be object-like macros, so
> > (*read), etc. are safe due to the parentheses.
> 
> They would only be safe in the header. They are not safe on the using
> side, I think. Something like
> 
>     toto->read = whatever;
> 
> or
> 
>     *toto = (cookie_io_functions_t){ .read = another, }
> 
> can't be protected by parenthesis.

It doesn't have to be, because it doesn't have the token ( immediately
following it.

Rich


  reply	other threads:[~2017-10-11  2:08 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-10 18:03 William Pitcock
2017-10-10 18:51 ` Jens Gustedt
2017-10-10 20:56   ` Rich Felker
2017-10-10 21:40     ` Jens Gustedt
2017-10-11  2:08       ` Rich Felker [this message]
2017-10-11  5:51         ` Jens Gustedt
2017-10-10 22:58     ` Morten Welinder
2017-10-11  2:09       ` Rich Felker
  -- strict thread matches above, loose matches on Subject: below --
2017-10-10 23:27 William Pitcock
2017-10-05  6:48 William Pitcock
2017-10-05 10:10 ` Szabolcs Nagy

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