From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,6b77ce1ba18f9267
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2002-11-07 02:50:44 PST
Path: 
 archiver1.google.com!news1.google.com!newsfeed.stanford.edu!cyclone.bc.net!newsfeed.media.kyoto-u.ac.jp!news-peer.gradwell.net!not-for-mail
Newsgroups: comp.lang.ada
From: porton@ex-code.com (Victor Porton)
Date: Thu, 07 Nov 2002 12:16:06 +0500
References: <wmey9.336376$nc1.2504303@telenews.teleline.es>
Subject: Re: Import a type from C
Mime-Version: 1.0
X-Newsreader: knews 1.0b.1
Content-Type: text/plain; charset=us-ascii
Message-ID: <3dca4583$0$299$bed64819@news.gradwell.net>
NNTP-Posting-Date: 07 Nov 2002 10:50:43 GMT
NNTP-Posting-Host: 195.149.39.13
X-Trace: 1036666243 news.gradwell.net 299 mail2news/195.149.39.13
X-Complaints-To: news-abuse@gradwell.net
Xref: archiver1.google.com comp.lang.ada:30513
Date: 2002-11-07T10:50:43+00:00
List-Id: <comp.lang.ada>

In article <u7kfqjnvv.fsf@gsfc.nasa.gov>,
	Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov> writes:
> "Frank J. Lhota" <NOSPAM.lhota.adarose@verizon.net> writes:
> 
>>     pragma Convention( C, My_Data );
> 
> Note that "a C compiler" really means "the C compiler that the Ada
> compiler knows about, with its default command line args". For
> example, GNAT will assume Gnu C, _without_ -fpacked. ObjectAda
> probably assumes MS C, again without the "packed" flag. That has
> caused me some major problems, when linking against C code compiled
> _with_ the -fpacked flag.

May be specifying both

pragma Convention( C, My_Data );
and
pragma Pack( My_Type );

will be compatible with gcc -fpacked?