Mail Archives: djgpp/2000/05/04/03:15:02

>Received: from devaure by; Thu, 4 May 2000 08:42:35 +0200
Message-ID: <005b01bfb593$eb5b1c60$>
From: "Alexandre Devaure" <Alexandre DOT Devaure AT leroy-autom DOT com>
To: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Cc: <djgpp AT delorie DOT com>
References: <Pine DOT SUN DOT 3 DOT 91 DOT 1000504092557 DOT 16176B-100000 AT is>
Subject: Re: structures size
Date: Thu, 4 May 2000 08:42:29 +0200
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Reply-To: djgpp AT delorie DOT com

----- Original Message -----
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
To: Alexandre Devaure <Alexandre DOT Devaure AT leroy-autom DOT com>
Cc: <djgpp AT delorie DOT com>
Sent: Thursday, May 04, 2000 8:27 AM
Subject: Re: structures size

> On Wed, 3 May 2000, Alexandre Devaure wrote:
> > I'd like the size of my structures is the same that in Borland C because
> > program need to read a structure in flash written by a program developed
> > under Borland C. So, I want to use the -fpack-struct option at
> > time. But it has no effect on the structure size and I need to add the
> > packed attribute on each structure.
> C programs or C++ programs?
> Can you post a short test program and its compilation command line, which
> can be used to reproduce this problem?

This is a C program :

#include <stdio.h>

struct l {
        uchar c;
        uint o;
        uint s;
struct st {
        struct l l;
        ulong d;
        uchar i;
        uchar t;
        ulong n;

        printf("%d\n",sizeof(struct st));

the command line is gcc -fpack-struct file.c

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