From: Markus Elfring <Markus.Elfring@web.de>
To: Julia Lawall <julia.lawall@lip6.fr>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
Coccinelle <cocci@systeme.lip6.fr>, "René Scharfe" <l.s.r@web.de>
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
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prev parent reply other threads:[~2019-11-16 18:29 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <50c77cdc-2b2d-16c8-b413-5eb6a2bae749@web.de>
[not found] ` <5189f847-1af1-f050-6c72-576a977f6f12@web.de>
[not found] ` <xmqqa790cyp1.fsf@gitster-ct.c.googlers.com>
[not found] ` <fe9b8c08-6fd4-d378-f3ff-8170381b10e0@web.de>
[not found] ` <xmqqr22b9ptk.fsf@gitster-ct.c.googlers.com>
[not found] ` <ba5d609a-16ea-d7e9-66e6-19aab94b2acd@web.de>
[not found] ` <53346d52-e096-c651-f70a-ce6ca4d82ff9@web.de>
[not found] ` <6c4ef61f-5fef-ffc8-82d6-ee42006756b4@web.de>
[not found] ` <aed296a6-bae0-6fcc-515e-ef96fed24ca6@web.de>
2019-11-15 11:11 ` [Cocci] git-coccinelle: adjustments for array.cocci? Markus Elfring
2019-11-15 14:20 ` Markus Elfring
2019-11-15 18:50 ` Markus Elfring
2019-11-16 1:00 ` 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]
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