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Silva" , Kees Cook Subject: Re: [PATCH v3] coccinelle: misc: add array_size_dup script to detect missed overflow checks From: Markus Elfring To: Denis Efremov , Coccinelle , Gilles Muller , Julia Lawall , Masahiro Yamada , Michal Marek , Nicolas Palix Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: Date: Fri, 19 Jun 2020 17:03:18 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:0dDirl9a1cXle/tNkqr42+2WaoqiVXrFC5lI+chji2DVPI7fmJX B+FHitTBLLj7znFEwh45Sc1LCXF9QziVsXM8GJXu4q29LHgXELN1w4KC/13krJ0QxmMaVw7 yaQGaVb+R91z53LDiUE9igNYXrkfEBRa3WmuiuPD5EE95Zq3Rgi/VPQT0HKVva6J2HZaAKj KaMc1LUoPBZ0DsbHU7uCQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:joucBZ9eE5E=:RIurRgSuJTokqpZGz+2J0+ bzt2le0VsugVrWTRNfAclI6TswkmQMTisFuD7m4bfql08FVvEVAK3IkzGCLw4rEoRxiNLV5C3 27sQ8k8C1YjbJGA+F4oQDFze8uBYna+DaifXRmHZI40KmW/Sf2+zfK+3oMd/otG3LW4blgPFw y+QtNd6OfHNclWKRy8YwawTX+L/9DI7YhgxmcUPAJs+l6JyI/gc/J86fP2GfUvwgUEeU2UY0/ JHWpNDieZu0lJZCN2h03TRvGD1NupB54Sh/MRRJbVeHhopPy6D0RzteNzfyzsA1kkdtd9FqER XFUvUhIYZsKpO3Pys7qBNw9GBgRACNidMgkb1FLiGxStctedIsD8s/z4MDfM8493oODh7fYeW ca9rqK4/tz/VzLnSCSKxgQEQGHNSMqS9o4K83vgl0dlT7YUFhGKO8RaS9kcu1Azu1k7EkRJFr yT7nCzogr1wE27RktKqppzOAmLZHNjcJmBkx/n5n4u2qXDp7eyCZyXy0XSwMiiB/o0+FWlM9W GSCPtp8fjsmLfPh4r9UeYY5qoGh2VOQ/Go7t5AZLSRLv9ohyeYUEulo+ag6JugMJPTlVMqWmH X/tpwhbATdJD35oRRLR5IzqhZ2ebXMOZTyfxM/FvWjjTojNKy0i18naG72gYUvn3F1g7RxK+e oIgWgMKnGxUz3OMzIwjFiiCgPXtIMr7PF2IgMXUqQ+KR3mUIzTWPt/4GIicridnDYz2RAUmU0 LAfyaHNCpwA4bbUz/YdDOgWkmui8s7l3bhxVsUbVYCymMqlkxadpudYNbX3ofpu7tKEiSfy74 T0qiZAMhgM4DOskVTOwmdoUW7l1Cu6EZRAFfvicro78szVX7pW67gXfJ2+M356EUle9IgASf0 9yEzzyUQNkcqZY+kJkwSY+ZKJnXlz6WRoZard745n861vN2ZE32S1V74vCBn5WXDape0tu5Kr TuRxinw2M64b3ABfzQHH/uGflLBUnhdKJeNA6HFbAukTfzZtGVwBev/hvdSmVX5SpvvH6Vifg aJQ6dPJkJImQs7StvSXyR7S933tPFJTb0xdRQCFoXAwa4ETPq9a9LLQgn8VKE3gt09DYbHJzJ v8geyl17eODgecgJ5wJUCvEx70k+R3PAinonliCaiQUuNup53NaqDXO8D+63/WYEd5WeMSWuM PNVU0JX7tmrbw+4GQBJC4mjRPgulKt8rdb2zz63RrI6YSORmfw0KI1AICp1FZw923gY0TUg/1 sYwn1O6MfVqqCW4BS Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Changes in v2: =E2=80=A6 > - assignment operator used I would prefer the distinction for the application of corresponding metava= riables. > Changes in v3: =E2=80=A6 > - \(&E1\|&E2\) changed to &\(E1\|E2\) Would it be more helpful to mention the movement of the ampersand before SmPL disjunctions? =E2=80=A6 > +virtual context > +virtual report > +virtual org Can the following SmPL code variant become more attractive? +virtual context, report, org =E2=80=A6 > +expression subE1 <=3D as.E1; > +expression subE2 <=3D as.E2; > +expression as.E1, as.E2, E3; How do you think about the following SmPL code variant? +expression subE1 <=3D as.E1, + subE2 <=3D as.E2, + as.E1, + as.E2, + E3; =E2=80=A6 > +coccilib.report.print_report(p2[0], > +f"WARNING: same struct_size (line {p1[0].line})") Please align such function parameters. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Do= cumentation/process/coding-style.rst?id=3D5e857ce6eae7ca21b2055cca4885545e= 29228fe2#n93 +coccilib.report.print_report(p2[0], + f"WARNING: same struct_size (line {p1[0].lin= e})") Regards, Markus