From: "Jan Beulich" <JBeulich@suse.com>
To: Julien Grall <julien.grall@arm.com>
Cc: Juergen Gross <jgross@suse.com>,
Stefano Stabellini <stefanos@xilinx.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Julien Grall <julien.grall@gmail.com>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH v6 1/4] xen: introduce SYMBOL
Date: Tue, 15 Jan 2019 01:04:54 -0700 [thread overview]
Message-ID: <5C3D9426020000780020D9C9@prv1-mh.provo.novell.com> (raw)
In-Reply-To: <bf9c1ef5-cfd2-99a3-d49c-f93669fc677b@arm.com>
>>> On 14.01.19 at 18:24, <julien.grall@arm.com> wrote:
> On 14/01/2019 16:44, Jan Beulich wrote:
>>
>> extern struct my_struct __start[];
>> extern struct my_struct __end[];
>>
>> void test(const struct my_struct *);
>>
>> void foo(int i) {
>> test(i ? __start : __end);
>> }
>
> Your example doesn't contain any potential undefined behavior. So, how this
> relevant with our discussion here?
I was merely trying to give an example where the compiler similarly
can't make implications. The potential undefined behavior would be
in test(), depending on what comparisons of the pointers it does.
Jan
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next prev parent reply other threads:[~2019-01-15 8:06 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-09 23:41 [PATCH v6 0/4] misc safety certification fixes Stefano Stabellini
2019-01-09 23:42 ` [PATCH v6 1/4] xen: introduce SYMBOL Stefano Stabellini
2019-01-10 2:40 ` Julien Grall
2019-01-10 8:24 ` Jan Beulich
2019-01-10 17:29 ` Stefano Stabellini
2019-01-10 18:46 ` Stewart Hildebrand
2019-01-10 19:03 ` Stefano Stabellini
2019-01-11 10:35 ` Jan Beulich
2019-01-11 17:01 ` Stefano Stabellini
2019-01-10 19:24 ` Julien Grall
2019-01-10 21:36 ` Stefano Stabellini
2019-01-10 23:31 ` Julien Grall
2019-01-11 2:14 ` Stefano Stabellini
2019-01-11 6:52 ` Juergen Gross
2019-01-11 16:52 ` Stefano Stabellini
2019-01-11 10:48 ` Jan Beulich
2019-01-11 18:04 ` Stefano Stabellini
2019-01-11 18:53 ` Stewart Hildebrand
2019-01-11 20:35 ` Julien Grall
2019-01-11 20:46 ` Stewart Hildebrand
2019-01-11 21:37 ` Stefano Stabellini
2019-01-14 3:45 ` Stewart Hildebrand
2019-01-14 10:26 ` Jan Beulich
2019-01-14 21:18 ` Stefano Stabellini
[not found] ` <1CACC1FB020000D800417A66@prv1-mh.provo.novell.com>
2019-01-15 8:21 ` Jan Beulich
2019-01-15 11:51 ` Julien Grall
[not found] ` <AB1DA25B020000B95C475325@prv1-mh.provo.novell.com>
2019-01-15 12:04 ` Jan Beulich
2019-01-15 12:23 ` Julien Grall
[not found] ` <BAE986750200003A5C475325@prv1-mh.provo.novell.com>
2019-01-15 12:44 ` Jan Beulich
2019-01-15 20:03 ` Stewart Hildebrand
2019-01-16 6:01 ` Juergen Gross
2019-01-16 10:19 ` Jan Beulich
2019-01-17 0:37 ` Stefano Stabellini
[not found] ` <B4D3ABC30200003B88BF86FB@prv1-mh.provo.novell.com>
[not found] ` <529ED2F90200004D00417A66@prv1-mh.provo.novell.com>
2019-01-17 11:45 ` Jan Beulich
2019-01-18 1:24 ` Stefano Stabellini
[not found] ` <76A2DEED0200005600417A66@prv1-mh.provo.novell.com>
2019-01-18 9:54 ` Jan Beulich
2019-01-18 10:48 ` Julien Grall
[not found] ` <9F511FC70200005E5C475325@prv1-mh.provo.novell.com>
2019-01-18 11:09 ` Jan Beulich
2019-01-18 15:22 ` Julien Grall
[not found] ` <3A8206D8020000035C475325@prv1-mh.provo.novell.com>
2019-01-21 9:39 ` Jan Beulich
2019-01-21 9:34 ` Jan Beulich
2019-01-21 10:22 ` Julien Grall
[not found] ` <E16AB350020000435C475325@prv1-mh.provo.novell.com>
2019-01-21 10:31 ` Jan Beulich
2019-01-21 23:15 ` Stefano Stabellini
[not found] ` <5EA2B4FA0200008000417A66@prv1-mh.provo.novell.com>
2019-01-22 9:06 ` Jan Beulich
2019-01-18 23:05 ` Stefano Stabellini
2019-01-21 5:24 ` Stewart Hildebrand
[not found] ` <5A96F2FD0200008D00417A66@prv1-mh.provo.novell.com>
2019-01-21 9:50 ` Jan Beulich
2019-01-21 23:41 ` Stefano Stabellini
2019-01-22 6:08 ` Juergen Gross
[not found] ` <42A2C4FA0200009000417A66@prv1-mh.provo.novell.com>
2019-01-22 9:16 ` Jan Beulich
2019-02-01 18:52 ` George Dunlap
2019-02-01 20:53 ` Stefano Stabellini
[not found] ` <58377FAD0200004688BF86FB@prv1-mh.provo.novell.com>
2019-01-21 10:06 ` Jan Beulich
2019-02-06 15:41 ` Ian Jackson
[not found] ` <C8F95655020000CAB8D7C7D4@prv1-mh.provo.novell.com>
[not found] ` <5867EFE6020000DB00417A66@prv1-mh.provo.novell.com>
[not found] ` <DACE7A5F020000B1B8D7C7D4@prv1-mh.provo.novell.com>
2019-02-07 14:51 ` Jan Beulich
2019-01-15 23:36 ` Stefano Stabellini
2019-01-16 8:47 ` Juergen Gross
[not found] ` <2EA6D6FD0200001F00417A66@prv1-mh.provo.novell.com>
2019-01-16 10:25 ` Jan Beulich
2019-01-17 0:41 ` Stefano Stabellini
[not found] ` <4EA2F2F90200004D00417A66@prv1-mh.provo.novell.com>
2019-01-17 11:46 ` Jan Beulich
[not found] ` <95DC675902000028AB59E961@prv1-mh.provo.novell.com>
2019-02-04 9:37 ` Jan Beulich
2019-02-04 19:08 ` Stefano Stabellini
2019-02-05 6:02 ` Juergen Gross
[not found] ` <2E9DDEFD0200007B00417A66@prv1-mh.provo.novell.com>
2019-02-05 7:53 ` Jan Beulich
2019-02-05 14:56 ` George Dunlap
[not found] ` <E730A9F90200001DAB59E961@prv1-mh.provo.novell.com>
2019-02-06 11:59 ` Jan Beulich
[not found] ` <7A8C0A4F020000EEB8D7C7D4@prv1-mh.provo.novell.com>
2019-02-06 16:21 ` Jan Beulich
2019-02-06 16:37 ` Ian Jackson
[not found] ` <08D440470200001BB8D7C7D4@prv1-mh.provo.novell.com>
2019-02-06 16:47 ` Jan Beulich
2019-02-06 16:52 ` Ian Jackson
2019-02-06 23:39 ` Stefano Stabellini
2019-02-07 11:48 ` Ian Jackson
2019-02-07 18:18 ` Stefano Stabellini
2019-02-12 11:31 ` Ian Jackson
2019-02-13 0:09 ` Stefano Stabellini
2019-01-15 11:46 ` Julien Grall
2019-01-15 12:23 ` Julien Grall
2019-01-14 10:11 ` Jan Beulich
2019-01-14 15:41 ` Julien Grall
2019-01-14 15:52 ` Jan Beulich
2019-01-14 16:26 ` Stewart Hildebrand
2019-01-14 16:39 ` Jan Beulich
2019-01-14 16:28 ` Julien Grall
2019-01-14 16:44 ` Jan Beulich
2019-01-14 17:24 ` Julien Grall
2019-01-15 8:04 ` Jan Beulich [this message]
2019-01-10 17:22 ` Stefano Stabellini
2019-01-10 8:34 ` Jan Beulich
2019-01-10 18:09 ` Stefano Stabellini
2019-01-09 23:42 ` [PATCH v6 2/4] xen/arm: use SYMBOL when required Stefano Stabellini
2019-01-10 8:41 ` Jan Beulich
2019-01-10 17:44 ` Stefano Stabellini
2019-01-11 10:52 ` Jan Beulich
2019-01-11 16:58 ` Stefano Stabellini
2019-01-14 9:23 ` Jan Beulich
2019-01-09 23:42 ` [PATCH v6 3/4] xen/x86: " Stefano Stabellini
2019-01-10 8:43 ` Jan Beulich
2019-01-10 17:45 ` Stefano Stabellini
2019-01-09 23:42 ` [PATCH v6 4/4] xen/common: " Stefano Stabellini
2019-01-10 8:49 ` Jan Beulich
2019-01-10 17:48 ` Stefano Stabellini
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