Date:	Tue, 9 Mar 1999 12:21:59 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Rich Dawe <rd5718 AT irix DOT bris DOT ac DOT uk>
cc:	djgpp AT delorie DOT com
Subject:	Re: Real stupid problem.
In-Reply-To:	<F89y29.Asz@fsa.bris.ac.uk>
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Reply-To:	djgpp AT delorie DOT com
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On Mon, 8 Mar 1999, Rich Dawe wrote:

> : struct SXM_Pat_header {
> :    int pat_size __attribute__ ((__packed__));
> :    char pack_type __attribute__ ((__packed__));
> :    short nr_rows __attribute__ ((__packed__));
> :    short pattern_data_size __attribute__ ((__packed__));
> : };
> 
> 	You can just put the attribute at the end of the structure too:
> 
> 	struct SXM_Pat_header {
> 		<blah>
> 	} __attribute__((packed));
> 
> This saves a lot of typing!

But note that this doesn't work in C++, only in C.  In C++ you need to
put the attribute after each struct member.  (FAQ section 22.10.)

> BTW I don't think you need the double
> underscores on the packed part - it works for me without. Is it supposed
> to have double underscores?

GCC accepts both, but -ansi complains if you don't use the
underscores.  It is always safer to have the underscores when you use
non-standard extensions (like __inline__ etc.), they run a lesser risk
of clashing with some global symbol defined by some third-party software.

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