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From: Markus Elfring <Markus.Elfring@web.de>
To: Julia Lawall <julia.lawall@lip6.fr>
Cc: Coccinelle <cocci@systeme.lip6.fr>, "René Scharfe" <l.s.r@web.de>,
	"Junio C Hamano" <gitster@pobox.com>,
	git@vger.kernel.org
Subject: Re: [Cocci] git-coccinelle: adjustments for array.cocci?
Date: Sat, 16 Nov 2019 19:29:29 +0100	[thread overview]
Message-ID: <d232b052-430c-5d44-96d5-b8bff261314d@web.de> (raw)
In-Reply-To: <alpine.DEB.2.21.1911161855400.3558@hadrien>

>> + memcpy(
>> +(       ptr, E, n *
>> +-       sizeof(*(ptr))
>> ++       sizeof(T)
>> +|       arr, E, n *
>> +-       sizeof(*(arr))
>> ++       sizeof(T)
>> +|       E, ptr, n *
>> +-       sizeof(*(ptr))
>> ++       sizeof(T)
>> +|       E, arr, n *
>> +-       sizeof(*(arr))
>> ++       sizeof(T)
>>  )
>> +       )
>
> This seems quite unreadable, in contrast to the original code.

The code formatting can vary for improved applications of SmPL disjunctions.

See also related update suggestions:
* https://public-inbox.org/git/05ab1110-2115-7886-f890-9983caabc52c@web.de/
* https://public-inbox.org/git/75b9417b-14a7-c9c6-25eb-f6e05f340376@web.de/


>> 5. I stored another generated patch based on the adjusted SmPL script.
>
> No idea what it means to store a patch.

I put the output from the program “spatch” into a text file like “array-reduced1.diff”
in a selected directory.


>> 6. I performed a corresponding file comparison.
>>
>> --- array-released.diff	2019-11-14 21:29:11.020576916 +0100
>> +++ array-reduced1.diff	2019-11-14 21:45:58.931956527 +0100
>> @@ -6,24 +6,10 @@
>>   	r->entry_count = t->entry_count;
>>   	r->delta_depth = t->delta_depth;
>>  -	memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0]));
>> -+	COPY_ARRAY(r->entries, t->entries, t->entry_count);
>> ++	memcpy(r->entries,t->entries,t->entry_count*sizeof(*(t->entries)));
>>   	release_tree_content(t);
>>   	return r;
>>   }
>
> I have no idea what is being compared here.

I suggest to take another look at the described steps then.


> The COPY_ARRAY thing looks nice, but doesn't seem to have anything to do
> with your semantic patch.

I find your interpretation of the presented software situation questionable.

* I got the impression in the meantime that my suggestion for a refactoring
  of a specific SmPL disjunction influenced transformation results for
  a subsequent SmPL rule in unexpected ways.

* Other software adjustments and solution variants can trigger further
  development considerations, can't they?

Regards,
Markus

  reply	other threads:[~2019-11-16 18:29 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-12 15:08 coccinelle: adjustments for array.cocci? Markus Elfring
2019-11-12 18:37 ` René Scharfe
2019-11-13  2:11   ` Junio C Hamano
2019-11-13  8:49     ` Markus Elfring
2019-11-14  2:03       ` Junio C Hamano
2019-11-14 13:15         ` Markus Elfring
2019-11-14 16:41           ` René Scharfe
2019-11-14 17:14             ` Markus Elfring
2019-11-14 17:46               ` René Scharfe
2019-11-15 11:11                 ` git-coccinelle: " Markus Elfring
2019-11-15 14:20                   ` Markus Elfring
2019-11-15 18:50                   ` Markus Elfring
2019-11-16  1:00                     ` [Cocci] " Julia Lawall
2019-11-16  6:57                       ` Markus Elfring
2019-11-16  8:29                       ` Markus Elfring
2019-11-16 17:57                   ` Julia Lawall
2019-11-16 18:29                     ` Markus Elfring [this message]
2019-11-15 20:37   ` coccinelle: " Markus Elfring
2019-11-16 21:13     ` René Scharfe
2019-11-17  7:56       ` Markus Elfring
2019-11-17 13:40         ` René Scharfe
2019-11-17 18:19           ` Markus Elfring
2019-11-19 19:14             ` René Scharfe
2019-11-19 20:21               ` Markus Elfring
2019-11-21 19:01                 ` René Scharfe
2019-11-16 16:33   ` Markus Elfring
2019-11-16 21:38     ` René Scharfe
2019-11-17  8:19       ` Markus Elfring
2019-11-17 13:40         ` René Scharfe
2019-11-17 18:36           ` Markus Elfring
2019-11-19 19:15             ` René Scharfe
2019-11-18 16:10           ` [PATCH] coccinelle: improve array.cocci Markus Elfring
2019-11-19 19:15             ` René Scharfe
2019-11-20  9:01               ` Markus Elfring
2019-11-21 19:02                 ` René Scharfe
2019-11-21 19:44                   ` Markus Elfring
2019-11-22 15:29                     ` SZEDER Gábor
2019-11-22 16:17                       ` Markus Elfring
2019-11-22  5:54               ` [PATCH] " Junio C Hamano
2019-11-22  7:34                 ` Markus Elfring
2020-01-25  8:23             ` Markus Elfring

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