From: Julia Lawall <julia.lawall@inria.fr>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: "Wen Yang" <wenyang@linux.alibaba.com>,
cocci@systeme.lip6.fr, kernel-janitors@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Gilles Muller" <Gilles.Muller@lip6.fr>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Masahiro Yamada" <yamada.masahiro@socionext.com>,
"Matthias Männich" <maennich@google.com>,
"Michal Marek" <michal.lkml@markovi.net>,
"Nicolas Palix" <nicolas.palix@imag.fr>,
"Thomas Gleixner" <tglx@linutronix.de>
Subject: Re: [v2] coccinelle: semantic patch to check for inappropriate do_div() calls
Date: Thu, 9 Jan 2020 13:17:44 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.21.2001091315560.10786@hadrien> (raw)
In-Reply-To: <d0d7eda5-6f4b-8501-624c-1f25b481520a@web.de>
[-- Attachment #1: Type: text/plain, Size: 866 bytes --]
On Thu, 9 Jan 2020, Markus Elfring wrote:
> >> Does the Coccinelle software ensure that a variable like “r.ul” contains
> >> really useful data even if the expected branch of the SmPL disjunction
> >> was occasionally not matched?
> >
> > The python code will only be executed if it does.
>
> The Python scripts will be executed if the SmPL rule “r” found something.
> I suggest to take a closer look at the involved data types for
> really safe case distinctions.
> Does the dependency management around the application of SmPL disjunctions
> need any further clarification?
I already clarified it. The python code will only be executed if the
variables that it references have values. The criterion is not just
whether the rule r was matched.
To see that this is the case, all or you have to do is try it. Or read
the Coccinelle source code.
julia
WARNING: multiple messages have this Message-ID
From: Julia Lawall <julia.lawall@inria.fr>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: "Michal Marek" <michal.lkml@markovi.net>,
"Wen Yang" <wenyang@linux.alibaba.com>,
"Gilles Muller" <Gilles.Muller@lip6.fr>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Nicolas Palix" <nicolas.palix@imag.fr>,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
"Matthias Männich" <maennich@google.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
cocci@systeme.lip6.fr
Subject: Re: [v2] coccinelle: semantic patch to check for inappropriate do_div() calls
Date: Thu, 09 Jan 2020 12:17:44 +0000 [thread overview]
Message-ID: <alpine.DEB.2.21.2001091315560.10786@hadrien> (raw)
In-Reply-To: <d0d7eda5-6f4b-8501-624c-1f25b481520a@web.de>
[-- Attachment #1: Type: text/plain, Size: 866 bytes --]
On Thu, 9 Jan 2020, Markus Elfring wrote:
> >> Does the Coccinelle software ensure that a variable like “r.ul” contains
> >> really useful data even if the expected branch of the SmPL disjunction
> >> was occasionally not matched?
> >
> > The python code will only be executed if it does.
>
> The Python scripts will be executed if the SmPL rule “r” found something.
> I suggest to take a closer look at the involved data types for
> really safe case distinctions.
> Does the dependency management around the application of SmPL disjunctions
> need any further clarification?
I already clarified it. The python code will only be executed if the
variables that it references have values. The criterion is not just
whether the rule r was matched.
To see that this is the case, all or you have to do is try it. Or read
the Coccinelle source code.
julia
WARNING: multiple messages have this Message-ID
From: Julia Lawall <julia.lawall@inria.fr>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: "Michal Marek" <michal.lkml@markovi.net>,
"Wen Yang" <wenyang@linux.alibaba.com>,
"Gilles Muller" <Gilles.Muller@lip6.fr>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Nicolas Palix" <nicolas.palix@imag.fr>,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
"Matthias Männich" <maennich@google.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
cocci@systeme.lip6.fr
Subject: Re: [Cocci] [v2] coccinelle: semantic patch to check for inappropriate do_div() calls
Date: Thu, 9 Jan 2020 13:17:44 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.21.2001091315560.10786@hadrien> (raw)
In-Reply-To: <d0d7eda5-6f4b-8501-624c-1f25b481520a@web.de>
[-- Attachment #1: Type: text/plain, Size: 866 bytes --]
On Thu, 9 Jan 2020, Markus Elfring wrote:
> >> Does the Coccinelle software ensure that a variable like “r.ul” contains
> >> really useful data even if the expected branch of the SmPL disjunction
> >> was occasionally not matched?
> >
> > The python code will only be executed if it does.
>
> The Python scripts will be executed if the SmPL rule “r” found something.
> I suggest to take a closer look at the involved data types for
> really safe case distinctions.
> Does the dependency management around the application of SmPL disjunctions
> need any further clarification?
I already clarified it. The python code will only be executed if the
variables that it references have values. The criterion is not just
whether the rule r was matched.
To see that this is the case, all or you have to do is try it. Or read
the Coccinelle source code.
julia
[-- Attachment #2: Type: text/plain, Size: 136 bytes --]
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next prev parent reply other threads:[~2020-01-09 12:17 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 17:02 [PATCH v2] coccinelle: semantic patch to check for inappropriate do_div() calls Wen Yang
2020-01-07 17:02 ` [Cocci] " Wen Yang
2020-01-07 17:25 ` Julia Lawall
2020-01-07 17:25 ` [Cocci] " Julia Lawall
2020-01-10 13:11 ` Wen Yang
2020-01-10 13:11 ` [Cocci] " Wen Yang
2020-01-09 10:35 ` Markus Elfring
2020-01-09 10:35 ` [Cocci] " Markus Elfring
2020-01-09 10:35 ` Markus Elfring
2020-01-09 10:41 ` Julia Lawall
2020-01-09 10:41 ` [Cocci] " Julia Lawall
2020-01-09 10:41 ` Julia Lawall
2020-01-09 12:00 ` [v2] " Markus Elfring
2020-01-09 12:00 ` [Cocci] " Markus Elfring
2020-01-09 12:00 ` Markus Elfring
2020-01-09 12:04 ` Julia Lawall
2020-01-09 12:04 ` [Cocci] " Julia Lawall
2020-01-09 12:04 ` Julia Lawall
2020-01-09 12:14 ` Markus Elfring
2020-01-09 12:14 ` [Cocci] " Markus Elfring
2020-01-09 12:14 ` Markus Elfring
2020-01-09 12:17 ` Julia Lawall [this message]
2020-01-09 12:17 ` [Cocci] " Julia Lawall
2020-01-09 12:17 ` Julia Lawall
2020-01-09 12:21 ` Markus Elfring
2020-01-09 12:21 ` [Cocci] " Markus Elfring
2020-01-09 12:21 ` Markus Elfring
2020-01-10 10:00 ` [PATCH v2] " Markus Elfring
2020-01-10 10:00 ` [Cocci] " Markus Elfring
2020-01-10 10:00 ` Markus Elfring
2020-01-10 12:34 ` Julia Lawall
2020-01-10 12:34 ` [Cocci] " Julia Lawall
2020-01-10 12:34 ` Julia Lawall
2020-01-10 15:46 ` [v2] coccinelle: semantic code search " Markus Elfring
2020-01-10 15:46 ` [Cocci] " Markus Elfring
2020-01-10 15:46 ` Markus Elfring
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