From: wempwer@gmail.com
To: "Jędrzej Dudkiewicz" <jedrzej.dudkiewicz@gmail.com>
Cc: gcc-help <gcc-help@gcc.gnu.org>
Subject: Re: how to make gcc warn about arithmetic signed overflow
Date: Sat, 21 Sep 2013 20:16:00 -0000 [thread overview]
Message-ID: <20130921201707.GI3086@a.lan> (raw)
In-Reply-To: <CABJqhQOooWnoHpkQ594sbRr4x=iG3OPqf55dhQes5H7eSP1ZhA@mail.gmail.com>
On Sat, Sep 21, 2013 at 09:55:07PM +0200, JÄdrzej Dudkiewicz wrote:
> >> No, that's not true. You can't change the value of a const object in a
> >> valid program.
> >
> > I think I can but it may cause an undefined behavior:
>
> Note, that Jonathan wrote "in a valid program". Your program is not
> valid, as it contains undefined behaviour - you change const int via
> pointer to non-const int.
Is p pointer in my code a pointer to non-const int? It points to bc
int memory address and bc is constant. Does C language bind constness
to an indentifier instead of memory address?
--
<wempwer@gmail.com>
next prev parent reply other threads:[~2013-09-21 20:16 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-21 16:45 wempwer
2013-09-21 17:24 ` Jonathan Wakely
2013-09-21 17:41 ` wempwer
2013-09-21 18:30 ` Jonathan Wakely
2013-09-21 18:50 ` wempwer
2013-09-21 19:55 ` Jędrzej Dudkiewicz
2013-09-21 20:16 ` wempwer [this message]
2013-09-21 20:52 ` Jędrzej Dudkiewicz
2013-09-21 21:07 ` wempwer
2013-09-23 4:04 ` James K. Lowden
2013-09-23 7:55 ` Jonathan Wakely
2013-09-23 15:47 ` James K. Lowden
2013-09-23 21:50 ` Jonathan Wakely
2013-09-23 22:44 ` James K. Lowden
2013-09-23 23:20 ` Jonathan Wakely
2013-09-23 19:38 ` Dave Allured - NOAA Affiliate
2013-09-23 19:43 ` Oleg Endo
2013-09-23 20:37 ` Dave Allured - NOAA Affiliate
2013-09-23 19:48 ` Andrew Haley
2013-09-23 22:00 ` James K. Lowden
2013-09-24 17:48 ` Andrew Haley
2013-09-26 2:30 ` James K. Lowden
2013-09-26 8:29 ` Vincent Lefevre
2013-09-26 14:49 ` Andrew Haley
2013-09-26 17:03 ` Vincent Lefevre
2013-09-26 18:19 ` Andrew Haley
2013-09-27 7:58 ` Vincent Lefevre
2013-09-27 8:23 ` Andrew Haley
2013-09-27 9:28 ` Vincent Lefevre
2013-09-27 9:43 ` Andrew Haley
2013-09-26 17:41 ` Andrew Haley
2013-09-24 7:42 ` Brian Drummond
2013-09-21 17:53 ` Marc Glisse
2013-09-21 18:09 ` wempwer
2013-09-21 18:27 ` Jonathan Wakely
2013-09-21 19:32 ` wempwer
2013-09-22 15:52 ` Jonathan Wakely
2013-09-23 13:04 ` David Brown
2013-09-21 17:36 ` Brian Drummond
2013-09-21 17:45 ` wempwer
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