From:	av568 AT rgfn DOT epcc DOT edu (Beautiful Savior Lutheran Church)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: C++ packed structs..
Date:	28 Feb 1997 20:41:55 GMT
Organization:	The Rio Grande Free-Net, El Paso Community College, El Paso, TX
Lines:	37
Message-ID:	<5f7fuj$c4i@news.epcc.edu>
References:	<33142636 DOT C9D AT cmr DOT no>
NNTP-Posting-Host:	rgfn.epcc.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Olav Kindt (kindt AT cmr DOT no) wrote:
> Hi all,  

> I just read from the faq 22.9 about packing struct.

> I have a clarification question regarding that:

> The faq says that a struct like

> 	struct {
> 		char name[7];
> 		unsigned long offset;
> 		double quality;
> 	} __attribute__ ((packed));

> will be packed correctly when compiled as C-source. Then it says that
> C++ doesn't allow this, and you must declare each struct field with the
> packed attribute.

> Does this in effect mean this :

> 	struct {
> 		char name[7] __attribute__ ((packed));
> 		unsigned long offset __attribute__ ((packed));
> 		double quality __attribute__ ((packed));
> 	};


> I've had some weird problems lately with my program, so
> I'll really appreciate an answer to this. Thanks in advance.

This is correct. AFAIK, __attribute__((packed)) not working in C++ mode 
is a problem with g++, not with C++ itself.

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