From: Vincent Lefevre <vincent+gcc@vinc17.org>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: gcc-help@gcc.gnu.org, Josef Wolf <jw@raven.inka.de>
Subject: Re: How to print pointer to function?
Date: Tue, 17 Dec 2019 15:23:00 -0000 [thread overview]
Message-ID: <20191217152328.GD458941@cventin.lip.ens-lyon.fr> (raw)
In-Reply-To: <20191217132204.GK3152@gate.crashing.org>
On 2019-12-17 07:22:04 -0600, Segher Boessenkool wrote:
> On Tue, Dec 17, 2019 at 01:56:48PM +0100, Vincent Lefevre wrote:
> > Here your code is still non-portable, perhaps *more* non-portable,
> > as only conversions between intptr_t and void * are guaranteed to
> > work. Moreover, the intptr_t type is optional.
>
> Any object pointer, sure (since you can convert those to pointer to
> void and back again).
Yes, but to be safe, you need to use void * as an intermediate type
in the conversion.
BTW, this does not mean that the conversion is lossless, as I suppose
that a pointer type may carry more information than just the address
of the object. But I think that this does not matter here.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
next prev parent reply other threads:[~2019-12-17 15:23 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 9:30 Josef Wolf
2019-12-12 9:44 ` Jonathan Wakely
2019-12-12 9:49 ` Liu Hao
2019-12-12 11:00 ` Josef Wolf
2019-12-17 12:56 ` Vincent Lefevre
2019-12-17 13:17 ` Liu Hao
2019-12-17 13:27 ` Segher Boessenkool
2019-12-17 14:52 ` Vincent Lefevre
2019-12-17 13:22 ` Segher Boessenkool
2019-12-17 15:23 ` Vincent Lefevre [this message]
2019-12-17 15:27 ` Manfred
2019-12-17 16:30 ` Vincent Lefevre
2019-12-17 22:49 ` Segher Boessenkool
2019-12-18 2:39 ` Liu Hao
2019-12-18 10:05 ` David Brown
2019-12-18 11:12 ` Segher Boessenkool
2019-12-17 13:01 ` Vincent Lefevre
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