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Re: [XEN PATCH v2] automation/eclair: extend existing deviations of MISRA C:2012 Rule 16.3
- To: Federico Serafini <federico.serafini@xxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 13 Jun 2024 12:03:13 +0200
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- Cc: consulting@xxxxxxxxxxx, Simone Ballarin <simone.ballarin@xxxxxxxxxxx>, Doug Goldstein <cardoe@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 13 Jun 2024 10:03:24 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 13.06.2024 11:02, Federico Serafini wrote:
> On 13/06/24 10:16, Jan Beulich wrote:
>> On 13.06.2024 08:38, Federico Serafini wrote:
>>> + * - R16.3
>>> + - Switch clauses ending with a do-while-false which, in turn, ends
>>> with an
>>
>> Maybe more precisely "the body of which"?
>
> Will do.
>
>>
>>> + allowed terminal statement are safe (e.g., PARSE_ERR_RET()).
>>> + Being ASSERT_UNREACHABLE() a construct that is effective in debug
>>> builds
>>> + only, it is not considered as an allowed terminal statement,
>>> despite its
>>> + definition.
>>
>> DYM despite its name? Its definition is what specifically renders it
>> unsuitable
>> for release builds.
>
> In debug builds, ASSERT_UNREACHABLE() expands to a do-while-false
> the body of which ends with __builtin_unreachable() which is a builtin
> marked as "noreturn" and thus considered as one of the "allowed
> terminal statements".
> As a result, ASSERT_UNREACHABLE() will be considered as an
> "allowed terminal statement" as well, which is something we want to
> avoid.
Hmm, then maybe add "there" at the end of the sentence, to refer back to
"debug builds"?
Jan
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