From: Markus Elfring <Markus.Elfring@web.de> To: Julia Lawall <julia.lawall@lip6.fr> Cc: Gilles Muller <Gilles.Muller@lip6.fr>, Masahiro Yamada <yamada.masahiro@socionext.com>, Michal Marek <michal.lkml@markovi.net>, Nicolas Palix <nicolas.palix@imag.fr>, Wen Yang <wen.yang99@zte.com.cn>, cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org, Yi Wang <wang.yi59@zte.com.cn> Subject: Re: [4/5] Coccinelle: put_device: Extend when constraints for two SmPL ellipses Date: Mon, 13 May 2019 14:22:44 +0200 [thread overview] Message-ID: <66250f72-c433-28c7-a224-6f248339ec4c@web.de> (raw) In-Reply-To: <alpine.DEB.2.20.1905131130530.3616@hadrien> >> Take additional casts for these code exclusion specifications into account >> together with optional parentheses. > > NACK. I find this rejection surprising. > You don't need so many type metavariables. I got an other software development opinion for this aspect. Yesterday we started to clarify consequences from the isomorphism specification “drop_cast” (for SmPL code). https://github.com/coccinelle/coccinelle/blob/32d3b89ad909316464344a5f61a8092d8d702321/standard.iso#L52 Information like the following influenced my design decision to add three metavariables here. elfring@Sonne:~/Projekte/Linux/next-patched> spatch --parse-cocci scripts/coccinelle/free/put_device.cocci … warning: iso drop_cast does not match the code below on line -1 T (T )id pure metavariable T is matched against the following nonpure code: T … > Type metavariables in the same ... can be the same. I would find it also occasionally nice when multiple SmPL ellipses can refer to identical type casts. * The under-documented “type purity” hinders this at the moment. * But I got the impression that it can be safer to distinguish these code variants better. Regards, Markus
WARNING: multiple messages have this Message-ID (diff)
From: Markus Elfring <Markus.Elfring@web.de> To: Julia Lawall <julia.lawall@lip6.fr> Cc: Yi Wang <wang.yi59@zte.com.cn>, Michal Marek <michal.lkml@markovi.net>, Nicolas Palix <nicolas.palix@imag.fr>, linux-kernel@vger.kernel.org, Wen Yang <wen.yang99@zte.com.cn>, cocci@systeme.lip6.fr Subject: Re: [Cocci] [4/5] Coccinelle: put_device: Extend when constraints for two SmPL ellipses Date: Mon, 13 May 2019 14:22:44 +0200 [thread overview] Message-ID: <66250f72-c433-28c7-a224-6f248339ec4c@web.de> (raw) In-Reply-To: <alpine.DEB.2.20.1905131130530.3616@hadrien> >> Take additional casts for these code exclusion specifications into account >> together with optional parentheses. > > NACK. I find this rejection surprising. > You don't need so many type metavariables. I got an other software development opinion for this aspect. Yesterday we started to clarify consequences from the isomorphism specification “drop_cast” (for SmPL code). https://github.com/coccinelle/coccinelle/blob/32d3b89ad909316464344a5f61a8092d8d702321/standard.iso#L52 Information like the following influenced my design decision to add three metavariables here. elfring@Sonne:~/Projekte/Linux/next-patched> spatch --parse-cocci scripts/coccinelle/free/put_device.cocci … warning: iso drop_cast does not match the code below on line -1 T (T )id pure metavariable T is matched against the following nonpure code: T … > Type metavariables in the same ... can be the same. I would find it also occasionally nice when multiple SmPL ellipses can refer to identical type casts. * The under-documented “type purity” hinders this at the moment. * But I got the impression that it can be safer to distinguish these code variants better. Regards, Markus _______________________________________________ Cocci mailing list Cocci@systeme.lip6.fr https://systeme.lip6.fr/mailman/listinfo/cocci
next prev parent reply other threads:[~2019-05-13 12:23 UTC|newest] Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-23 6:14 [PATCH] coccinelle: put_device: reduce false positives Wen Yang 2019-03-23 6:14 ` [Cocci] " Wen Yang 2019-03-23 13:41 ` Julia Lawall 2019-03-23 13:41 ` [Cocci] " Julia Lawall 2019-03-23 19:44 ` Markus Elfring 2019-03-23 19:44 ` [Cocci] " Markus Elfring 2019-03-23 19:44 ` Markus Elfring 2019-03-23 20:06 ` Julia Lawall 2019-03-23 20:06 ` [Cocci] " Julia Lawall 2019-03-23 20:06 ` Julia Lawall 2019-03-26 8:45 ` Dan Carpenter 2019-03-26 8:45 ` [Cocci] " Dan Carpenter 2019-03-26 8:45 ` Dan Carpenter 2019-03-26 9:38 ` Julia Lawall 2019-03-26 9:38 ` [Cocci] " Julia Lawall 2019-03-26 9:38 ` Julia Lawall 2019-03-26 10:11 ` Dan Carpenter 2019-03-26 10:11 ` [Cocci] " Dan Carpenter 2019-03-26 10:11 ` Dan Carpenter 2019-03-26 10:15 ` Julia Lawall 2019-03-26 10:15 ` [Cocci] " Julia Lawall 2019-03-26 10:15 ` Julia Lawall 2019-03-28 13:08 ` Masahiro Yamada 2019-03-28 13:08 ` [Cocci] " Masahiro Yamada 2019-03-28 13:08 ` Masahiro Yamada 2019-03-28 14:19 ` Julia Lawall 2019-03-28 14:19 ` [Cocci] " Julia Lawall 2019-03-28 14:19 ` Julia Lawall 2019-04-01 6:44 ` Coccinelle: " Markus Elfring 2019-04-01 6:44 ` [Cocci] " Markus Elfring 2019-04-01 6:44 ` Markus Elfring 2019-04-01 20:04 ` Julia Lawall 2019-04-01 20:04 ` [Cocci] " Julia Lawall 2019-04-01 20:04 ` Julia Lawall 2019-05-13 8:55 ` [PATCH 0/5] Coccinelle: put_device: Adjustments for a SmPL script Markus Elfring 2019-05-13 8:55 ` [Cocci] " Markus Elfring 2019-05-13 8:59 ` [PATCH 1/5] Coccinelle: put_device: Adjust a message construction Markus Elfring 2019-05-13 8:59 ` [Cocci] " Markus Elfring 2019-05-13 9:35 ` Julia Lawall 2019-05-13 9:35 ` [Cocci] " Julia Lawall 2019-05-13 11:33 ` [1/5] " Markus Elfring 2019-05-13 11:33 ` [Cocci] " Markus Elfring 2019-05-13 11:36 ` Julia Lawall 2019-05-13 11:36 ` [Cocci] " Julia Lawall 2019-05-13 12:48 ` Markus Elfring 2019-05-13 12:48 ` [Cocci] " Markus Elfring 2019-07-06 13:13 ` [Cocci] [PATCH 1/5] " Masahiro Yamada 2019-07-06 13:13 ` Masahiro Yamada 2019-05-13 9:01 ` [PATCH 2/5] Coccinelle: put_device: Add a cast to an expression for an assignment Markus Elfring 2019-05-13 9:01 ` [Cocci] " Markus Elfring 2019-05-13 9:33 ` Julia Lawall 2019-05-13 9:33 ` [Cocci] " Julia Lawall 2019-07-06 13:13 ` Masahiro Yamada 2019-07-06 13:13 ` Masahiro Yamada 2019-05-13 9:05 ` [PATCH 3/5] Coccinelle: put_device: Merge four SmPL when constraints into one Markus Elfring 2019-05-13 9:05 ` [Cocci] " Markus Elfring 2019-05-13 9:32 ` Julia Lawall 2019-05-13 9:32 ` [Cocci] " Julia Lawall 2019-05-13 11:48 ` [3/5] " Markus Elfring 2019-05-13 11:48 ` [Cocci] " Markus Elfring 2019-05-13 11:48 ` Markus Elfring 2019-05-13 11:48 ` [Cocci] " Markus Elfring 2019-05-13 11:51 ` Julia Lawall 2019-05-13 11:51 ` [Cocci] " Julia Lawall 2019-05-13 12:52 ` Markus Elfring 2019-05-13 12:52 ` [Cocci] " Markus Elfring 2019-05-13 9:07 ` [PATCH 4/5] Coccinelle: put_device: Extend when constraints for two SmPL ellipses Markus Elfring 2019-05-13 9:07 ` [Cocci] " Markus Elfring 2019-05-13 9:31 ` Julia Lawall 2019-05-13 9:31 ` [Cocci] " Julia Lawall 2019-05-13 12:22 ` Markus Elfring [this message] 2019-05-13 12:22 ` [Cocci] [4/5] " Markus Elfring 2019-05-14 5:55 ` Markus Elfring 2019-05-14 5:55 ` [Cocci] " Markus Elfring 2019-05-14 6:52 ` Julia Lawall 2019-05-14 6:52 ` [Cocci] " Julia Lawall 2019-05-14 7:49 ` Markus Elfring 2019-05-14 7:49 ` [Cocci] " Markus Elfring 2019-05-14 9:18 ` [Cocci] [4/5] Coccinelle: put_device: Extend when constraints for twoSmPL ellipses wen.yang99 2019-05-14 9:51 ` Markus Elfring 2019-05-14 9:51 ` [Cocci] " Markus Elfring 2019-05-15 17:09 ` [4/5] Coccinelle: put_device: Extend when constraints for two SmPL ellipses Markus Elfring 2019-05-14 7:49 ` Markus Elfring 2019-05-14 7:49 ` [Cocci] " Markus Elfring 2019-05-13 9:07 ` [PATCH 4/5] " Markus Elfring 2019-05-13 9:07 ` [Cocci] " Markus Elfring 2019-05-13 9:10 ` [PATCH 5/5] Coccinelle: put_device: Merge two SmPL when constraints into one Markus Elfring 2019-05-13 9:10 ` [Cocci] " Markus Elfring 2019-05-13 9:30 ` Julia Lawall 2019-05-13 9:30 ` [Cocci] " Julia Lawall 2019-05-13 12:35 ` [5/5] " Markus Elfring 2019-05-13 12:35 ` [Cocci] " Markus Elfring
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