From: Doug Evans <xdje42@gmail.com>
To: Andy Wingo <wingo@pobox.com>
Cc: Mark H Weaver <mhw@netris.org>, guile-devel <guile-devel@gnu.org>
Subject: Re: RFC: Foreign objects facility
Date: Fri, 2 May 2014 21:57:12 -0700 [thread overview]
Message-ID: <CAP9bCMTDoKoAC8HMRu0Df8pp+AtMrs3-6PsR45kRwQiS02tdew@mail.gmail.com> (raw)
In-Reply-To: <87oazm3bki.fsf@pobox.com>
On Sun, Apr 27, 2014 at 10:51 AM, Andy Wingo <wingo@pobox.com> wrote:
>[...]
>> Portability is more problematic for pointer types. The C standards make
>> no guarantees about the semantics of converting between pointers and
>> integers, and it's not clear to me how future proof this will be.
>
> Don't they make some guarantees wrt uintptr_t and intptr_t ?
Data point: Yes. One can convert from void * to either of these and
back "and the result will compare equal to the original pointer".
next prev parent reply other threads:[~2014-05-03 4:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-27 13:17 RFC: Foreign objects facility Andy Wingo
2014-04-27 16:00 ` Mark H Weaver
2014-04-27 16:46 ` Stefan Israelsson Tampe
2014-04-28 17:47 ` Andy Wingo
2014-04-27 17:51 ` Andy Wingo
2014-05-03 4:57 ` Doug Evans [this message]
2014-04-28 16:08 ` Andy Wingo
2014-04-29 16:08 ` Doug Evans
2014-04-29 18:27 ` Andy Wingo
2014-04-28 8:24 ` Ludovic Courtès
2014-04-28 18:05 ` Andy Wingo
2014-04-29 15:56 ` Doug Evans
2014-04-29 18:25 ` Andy Wingo
2014-05-03 5:45 ` Doug Evans
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