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[209.132.180.67]) by mx.google.com with ESMTP id d125si6369435pfd.257.2019.05.13.22.57.54; Mon, 13 May 2019 22:58:09 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@web.de header.s=dbaedf251592 header.b=eBevBaf0; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726901AbfENF4N (ORCPT + 99 others); Tue, 14 May 2019 01:56:13 -0400 Received: from mout.web.de ([212.227.17.12]:45869 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725562AbfENF4N (ORCPT ); Tue, 14 May 2019 01:56:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1557813347; bh=ZN/didN9u3mF/8P+UH4HgO1wNWrauNcQ56uVTAGh1hY=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=eBevBaf0oydISvv06Ii7ZO1voirXJSdDTyujcWMZbj23NVYmkcwaJev5gt4DI1L3u 3uCKa6nqWvbdUrdmrbMX1RA73ZlRrIqbsnGCp+OGvS+CuN+xf4zO6dSmzP7pFcgag1 pLwZQ867hBCLGBiXYHj/ImjWlwGmAaEZBnePOoMQ= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.3] ([93.131.122.180]) by smtp.web.de (mrweb102 [213.165.67.124]) with ESMTPSA (Nemesis) id 0MS290-1hEpo11Zj0-00TEQu; Tue, 14 May 2019 07:55:47 +0200 Subject: Re: [4/5] Coccinelle: put_device: Extend when constraints for two SmPL ellipses To: Julia Lawall Cc: Gilles Muller , Masahiro Yamada , Michal Marek , Nicolas Palix , Wen Yang , cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org, Yi Wang References: <1553321671-27749-1-git-send-email-wen.yang99@zte.com.cn> <6f08d4d7-5ffc-11c0-8200-cade7d294de6@web.de> From: Markus Elfring Openpgp: preference=signencrypt Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:3zyjaDu5jTX+gOtrR2DqvrsR+wc6K8837fqdfMEV7L+/E3U2KfH y2ga82y1ZxpEPQ3Do2V3osAfTckW+i+8Rq3Hrtqax4ooOw4vJvoML35eJObpUSPLxpV27sx Hbupm/QrH+P7hDvBeKtbRTLNkYTrY2XbSg4+B3IHWIC5T34y9Y17WJu0MfIiSQ2NRR8W2bT iPcRPpn10iXb1YmtOXM1Q== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:RQZWWZ1n6G0=:3canBtIVbDR+L4T3A8vkzx OW1/EUcwYXuJxoQgVurv4X/6Wq78pIo/KlUI7e9hELUzyAUhP2RcQPlR96EYfu/FDypzcIqSH 3SF8RLc+m7zkvtuFrHnoZyHw7/V0JUfnTj8Zl58fvpXSAs2+uy7gknOAoa4EUNTONW9hnEz+y IwYniBwhJYH2qCDx5iiZgcWa9Nkn0U9GGOKa9i8BTWHHEX6Aut98RETTIuvXdPFTYiTsaZWtW 5LgfHxf1B9i+neTGpmlUd4kQIgchTlP4hbrXl2ZxNByzns7UbUzE/cVTKjvdTlPg5opANYDV0 OJ7pvbhou4pEl8xAy3ZHeB2PQCcy4PK7TUp4WJiTd1D7d6mM8NgIg3kGysL6nfa3OnpSdqvTE 3DyEP1kP4Q4cHJuvD4RIuHK9U3LJHEwzoMs8X4coWa3DsC55z7OIQEjtmiTVCFeRM/g78g515 8aWlspE8wrlDXb9J//2wVIF6HOqqbq6tNjHHxtmzWLfgZIv/fXYcjGKa5zPgaoso+E9bMrtLr dG1eu3BFjYbJMeg76+bEj2IDi5D48ielO8jZUDZkTwa2mRsJrzqw4IuMxQjhFDyUz0THJUNn2 4Nmta+CzFtxx1m8UrnIoFphMWS5ZfoqThkZKfT/gIKusN9RNbCNLnhzCwW2Iew2hcHKy69XdB SIKHZvRZ5qauB1LQTA7IIv5KV3rEa7BOUBu/3NbPuJvpXNzrGPlgaOfT4CV6FafGlxoYKb1Rl P8BAZ7tj1fn85wEJvDGwVotuRUDPkeOIFLUwXUfBlkBvDApMUDF+pohrz4mp/JZJ1/Fh27Ti1 er1gN5cbmZ+H+/59kv9Yq2MbVmo+oxqrQfPAolvXCl3YJIsfl1i0WBo2F3cP+b24MYcfPauWw wU8Ox3rW87UthqPCXdjTTfJl/yBMLjooYKxHsYPnI4ioZXeWgw1Lo7kw/nogdsSYuqMD8+Mdt yJwZUP7UhQg== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >> A SmPL ellipsis was specified for a search approach so that additional >> source code would be tolerated between an assignment to a local variabl= e >> and the corresponding null pointer check. >> >> But such code should be restricted. >> * The local variable must not be reassigned there. >> * It must also not be forwarded to an other assignment target. >> >> Take additional casts for these code exclusion specifications into acco= unt >> together with optional parentheses. > > NACK. Can you agree to any information which I presented in the commit message? > You don't need so many type metavariables. It seems that the Coccinelle software can cope also with my SmPL code addi= tion. You might feel uncomfortable with the suggested changes for a while. > Type metavariables in the same ... can be the same. Such information is good to know for the proper usage of specifications after a SmPL ellipsis. * Can it become required to identify involved source code placeholders by extra metavariables? * Would you like to clarify the probability any more how often the shown type casts will be identical? Regards, Markus