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From: chris <spamoff.danx@ntlworld.com>
Subject: Re: Importing C structs?
Date: Thu, 31 Jul 2003 11:53:51 +0100
Date: 2003-07-31T11:53:51+01:00	[thread overview]
Message-ID: <Ex6Wa.1780$Kx1.17664@newsfep4-glfd.server.ntli.net> (raw)
In-Reply-To: <6RYVa.16208$It4.10081@rwcrnsc51.ops.asp.att.net>

tmoran@acm.org wrote:
> 
>   This is wrong.  The C has
> 
> 
>>  union {
>>    int i[8];
>>    char s[JMSG_STR_PARM_MAX];
>>  } msg_parm;
> 
>   which means msg_parm is JMSG_STR_PARM_MAX number of bytes, interpretable
> sometimes as a char array and sometimes as an int array followed by
> filler.  msg_parm is never an address.  To match the C, I suggest making
> msg_parm an interfaces.c.char_array (the larger of the two objects),
> and then doing an unchecked_conversion on those (relatively rare)
> occasions when you need to treat it as an array of int's.  

Yeah I knew that was wrong, I just didn't know what to map a union to 
and hadn't fixed it yet...  thanks for the example!


Thanks,
Chris




  reply	other threads:[~2003-07-31 10:53 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-30 20:03 Importing C structs? Freejack
2003-07-30 20:52 ` chris
2003-07-30 21:26   ` Freejack
2003-07-30 23:50   ` tmoran
2003-07-31 10:53     ` chris [this message]
2003-08-04 14:33     ` Andreas Almroth
2003-08-04 15:16       ` Samuel Tardieu
2003-08-04 20:07         ` Randy Brukardt
2003-07-31 17:14   ` Warren W. Gay VE3WWG
2003-08-12  0:02     ` chris
2003-07-31 18:17   ` Xenos
2003-07-31 19:16     ` Simon Wright
2003-07-31 20:17       ` Samuel Tardieu
2003-07-31 20:40       ` Xenos
2003-07-30 23:14 ` Ching Bon Lam
2003-07-31  0:07   ` tmoran
2003-07-31  5:35   ` Matthew Heaney
2003-07-31  7:46     ` Freejack
2003-07-31  9:27       ` Martin Dowie
2003-07-31 21:41         ` Freejack
2003-08-01  7:39           ` Martin Dowie
2003-07-31 17:34       ` Matthew Heaney
2003-07-31 11:29     ` Ching Bon Lam
2003-07-31 16:59       ` Matthew Heaney
2003-07-31 17:32         ` Warren W. Gay VE3WWG
2003-07-31 17:13       ` Matthew Heaney
2003-07-31 17:40       ` Randy Brukardt
2003-07-31  5:21 ` Matthew Heaney
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