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From: Jeff King <peff@peff.net>
To: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
	"SZEDER Gábor" <szeder.dev@gmail.com>
Subject: Re: [PATCH v3 00/11] cocci: make "incremental" possible + a ccache-like tool
Date: Mon, 17 Oct 2022 15:18:24 -0400	[thread overview]
Message-ID: <Y02qgLP12p0c+XWB@coredump.intra.peff.net> (raw)
In-Reply-To: <221017.86czaqjnhy.gmgdl@evledraar.gmail.com>

On Mon, Oct 17, 2022 at 08:36:46PM +0200, Ævar Arnfjörð Bjarmason wrote:

> > Maybe we don't do any of the things that could trigger problems in our
> > spatch rules. But it's not clear to me what we're risking. Do you have a
> > link for further discussion?
> 
> I think 10/11's commit message should answer your question:
> https://lore.kernel.org/git/patch-v3-10.11-52177ea2a68-20221014T152553Z-avarab@gmail.com/
> 
> The tl;dr is that it's not safe in the general case, as noted in the
> post you & the more recent one I linked to in 10/11.

Thanks. Holy cow, the coccinelle list is hard to use compared to
lore/public-inbox. The direct link to the thread in question is:

  https://sympa.inria.fr/sympa/arc/cocci/2022-09/msg00001.html

(you'll need to click a javascript button to see it, though).

> So, with this series doing:
> 
> 	perl -pi -e 's/swap/preincrement/g' contrib/coccinelle/swap.cocci
> 
> Will error it if you run it with "SPATCH_CONCAT_COCCI=Y", but not with
> "SPATCH_CONCAT_COCCI=", as the rule names conflict in the ALL.cocci.
> 
> But as 10/11 notes we can just avoid this by not picking conflicting
> names, which doesn't seem like an undue burden.

Yeah, that seems OK, then. In fact, I'd be fine with guidance in the
README saying "don't bother with a name if you don't need it".

-Peff

  parent reply	other threads:[~2022-10-17 19:19 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-25 14:36 [PATCH 0/5] cocci: make "incremental" possible + a ccache-like tool Ævar Arnfjörð Bjarmason
2022-08-25 14:36 ` [PATCH 1/5] Makefile: add ability to TAB-complete cocci *.patch rules Ævar Arnfjörð Bjarmason
2022-08-25 14:36 ` [PATCH 2/5] Makefile: have "coccicheck" re-run if flags change Ævar Arnfjörð Bjarmason
2022-08-25 15:29   ` SZEDER Gábor
2022-08-25 14:36 ` [PATCH 3/5] cocci: make "coccicheck" rule incremental Ævar Arnfjörð Bjarmason
2022-08-25 19:44   ` SZEDER Gábor
2022-08-25 22:18     ` Ævar Arnfjörð Bjarmason
2022-08-26 10:43       ` SZEDER Gábor
2022-08-25 14:36 ` [PATCH 4/5] cocci: make incremental compilation even faster Ævar Arnfjörð Bjarmason
2022-08-25 14:36 ` [PATCH 5/5] spatchcache: add a ccache-alike for "spatch" Ævar Arnfjörð Bjarmason
2022-08-31 20:57 ` [PATCH v2 0/9] cocci: make "incremental" possible + a ccache-like tool Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 1/9] cocci rules: remove unused "F" metavariable from pending rule Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 2/9] Makefile: add ability to TAB-complete cocci *.patch rules Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 3/9] Makefile: have "coccicheck" re-run if flags change Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 4/9] Makefile: split off SPATCH_BATCH_SIZE comment from "cocci" heading Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 5/9] cocci: split off include-less "tests" from SPATCH_FLAGS Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 6/9] cocci: split off "--all-includes" " Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 7/9] cocci: make "coccicheck" rule incremental Ævar Arnfjörð Bjarmason
2022-09-01 16:38     ` SZEDER Gábor
2022-09-01 18:04       ` Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 8/9] cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES Ævar Arnfjörð Bjarmason
2022-08-31 20:57   ` [PATCH v2 9/9] spatchcache: add a ccache-alike for "spatch" Ævar Arnfjörð Bjarmason
2022-10-14 15:31   ` [PATCH v3 00/11] cocci: make "incremental" possible + a ccache-like tool Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 01/11] Makefile + shared.mak: rename and indent $(QUIET_SPATCH_T) Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 02/11] cocci rules: remove unused "F" metavariable from pending rule Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 03/11] Makefile: add ability to TAB-complete cocci *.patch rules Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 04/11] Makefile: have "coccicheck" re-run if flags change Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 05/11] Makefile: split off SPATCH_BATCH_SIZE comment from "cocci" heading Ævar Arnfjörð Bjarmason
2022-10-14 20:39       ` Taylor Blau
2022-10-14 15:31     ` [PATCH v3 06/11] cocci: split off include-less "tests" from SPATCH_FLAGS Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 07/11] cocci: split off "--all-includes" " Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 08/11] cocci: make "coccicheck" rule incremental Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 09/11] cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 10/11] cocci: run against a generated ALL.cocci Ævar Arnfjörð Bjarmason
2022-10-14 15:31     ` [PATCH v3 11/11] spatchcache: add a ccache-alike for "spatch" Ævar Arnfjörð Bjarmason
2022-10-17 17:50     ` [PATCH v3 00/11] cocci: make "incremental" possible + a ccache-like tool Jeff King
2022-10-17 18:36       ` Ævar Arnfjörð Bjarmason
2022-10-17 19:08         ` Junio C Hamano
2022-10-17 19:18         ` Jeff King [this message]
2022-10-26 14:20     ` [PATCH v4 00/12] " Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 01/12] Makefile + shared.mak: rename and indent $(QUIET_SPATCH_T) Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 02/12] cocci rules: remove unused "F" metavariable from pending rule Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 03/12] Makefile: add ability to TAB-complete cocci *.patch rules Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 04/12] Makefile: have "coccicheck" re-run if flags change Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 05/12] Makefile: split off SPATCH_BATCH_SIZE comment from "cocci" heading Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 06/12] cocci: split off include-less "tests" from SPATCH_FLAGS Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 07/12] cocci: split off "--all-includes" " Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 08/12] cocci: make "coccicheck" rule incremental Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 09/12] cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 10/12] cocci rules: remove <id>'s from rules that don't need them Ævar Arnfjörð Bjarmason
2022-10-26 14:20       ` [PATCH v4 11/12] cocci: run against a generated ALL.cocci Ævar Arnfjörð Bjarmason
2022-10-28 12:58         ` SZEDER Gábor
2022-10-26 14:20       ` [PATCH v4 12/12] spatchcache: add a ccache-alike for "spatch" Ævar Arnfjörð Bjarmason
2022-11-01 22:35       ` [PATCH v5 00/13] cocci: make "incremental" possible + a ccache-like tool Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 01/13] Makefile + shared.mak: rename and indent $(QUIET_SPATCH_T) Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 02/13] cocci rules: remove unused "F" metavariable from pending rule Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 03/13] Makefile: add ability to TAB-complete cocci *.patch rules Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 04/13] Makefile: have "coccicheck" re-run if flags change Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 05/13] Makefile: split off SPATCH_BATCH_SIZE comment from "cocci" heading Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 06/13] cocci: split off include-less "tests" from SPATCH_FLAGS Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 07/13] cocci: split off "--all-includes" " Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 08/13] cocci: make "coccicheck" rule incremental Ævar Arnfjörð Bjarmason
2022-11-09 14:57           ` SZEDER Gábor
2022-11-01 22:35         ` [PATCH v5 09/13] cocci: optimistically use COMPUTE_HEADER_DEPENDENCIES Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 10/13] Makefile: copy contrib/coccinelle/*.cocci to build/ Ævar Arnfjörð Bjarmason
2022-11-09 15:05           ` SZEDER Gábor
2022-11-09 15:42             ` Ævar Arnfjörð Bjarmason
2022-11-10 16:14               ` [PATCH] Makefile: don't create a ".build/.build/" for cocci, fix output Ævar Arnfjörð Bjarmason
2022-11-11 22:22                 ` Taylor Blau
2022-11-01 22:35         ` [PATCH v5 11/13] cocci rules: remove <id>'s from rules that don't need them Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 12/13] cocci: run against a generated ALL.cocci Ævar Arnfjörð Bjarmason
2022-11-01 22:35         ` [PATCH v5 13/13] spatchcache: add a ccache-alike for "spatch" Ævar Arnfjörð Bjarmason

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