{"id":116100,"date":"2024-05-26T22:54:55","date_gmt":"2024-05-26T20:54:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-kazhdom-pyatom-pakete-na-yazyke-rust-ispolzuetsya-rezhim-unsafe"},"modified":"2024-05-26T22:54:55","modified_gmt":"2024-05-26T20:54:55","slug":"v-kazhdom-pyatom-pakete-na-yazyke-rust-ispolzuetsya-rezhim-unsafe","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/v-kazhdom-pyatom-pakete-na-yazyke-rust-ispolzuetsya-rezhim-unsafe","title":{"rendered":"Every fifth package in Rust uses the unsafe mode","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Rust Foundation k\u00f6zz\u00e9tette a statisztik\u00e1kat, amelyek szerint a crates.io katal\u00f3gus\u00e1ban tal\u00e1lhat\u00f3 127 ezer jelent\u0151s csomag k\u00f6z\u00fcl t\u00f6bb mint 24 ezer (19,11%) haszn\u00e1lja az «unsafe» kulcssz\u00f3t a mem\u00f3ria nem biztons\u00e1gos kezel\u00e9s\u00e9re alkalmas lehet\u0151s\u00e9gek integr\u00e1l\u00e1s\u00e1ra egyes k\u00f3dr\u00e9szekben, p\u00e9ld\u00e1ul mutat\u00f3k derefer\u00e1l\u00e1s\u00e1ra, k\u00fcls\u0151 f\u00fcggv\u00e9nyek h\u00edv\u00e1s\u00e1ra vagy statikus v\u00e1ltoz\u00f3k m\u00f3dos\u00edt\u00e1s\u00e1ra. A csomagok 34,35%-a k\u00f6zvetlen h\u00edv\u00e1sokat v\u00e9gez m\u00e1s crate-csomagokb\u00f3l, amelyek haszn\u00e1lj\u00e1k az «unsafe» m\u00f3dot. <\/p>\n

Megfigyelhet\u0151, hogy a legt\u00f6bb esetben az «unsafe» m\u00f3d haszn\u00e1lat\u00e1t k\u00fclf\u00f6ldi nyelveken \u00edrt k\u00f3dok vagy C\/C++ k\u00f6nyvt\u00e1rak h\u00edv\u00e1sa indokolja. Az «unsafe» m\u00f3dban v\u00e9gzett h\u00edv\u00e1sok sz\u00e1m\u00e1t tekintve a Microsoft \u00e1ltal fejlesztett windows crate-csomagot tartj\u00e1k a legnagyobb sz\u00e1m\u00fanak, amely a Windows API-t wrap-el\u0151 csomag. Ez a csomag 36 milli\u00f3 let\u00f6lt\u00e9st sz\u00e1ml\u00e1l. Az «unsafe» m\u00f3d a legn\u00e9pszer\u0171bb csomagokban is haszn\u00e1latban van, mint p\u00e9ld\u00e1ul a syn (470 milli\u00f3 let\u00f6lt\u00e9s), proc-macro2 (354 milli\u00f3 let\u00f6lt\u00e9s) \u00e9s libc (345 milli\u00f3 let\u00f6lt\u00e9s). <\/p>\n

A «unsafe» m\u00f3dban v\u00e9grehajtott k\u00f3dbeli probl\u00e9m\u00e1k felt\u00e1r\u00e1s\u00e1ra a Miri \u00e9rtelmez\u0151 fejleszt\u00e9se zajlik, amely lehet\u0151v\u00e9 teszi a buffer hat\u00e1rain t\u00fali h\u00edv\u00e1sok, a mem\u00f3ria felszabad\u00edt\u00e1sa ut\u00e1ni haszn\u00e1lat, nem inicializ\u00e1lt adatok helytelen haszn\u00e1lata, az alap t\u00edpusok invarianci\u00e1j\u00e1nak megs\u00e9rt\u00e9se (p\u00e9ld\u00e1ul a bool \u00e9rt\u00e9kek 0 vagy 1-hez val\u00f3 nem megfelel\u0151 rendeltet\u00e9se), az objektumok tulajdonjog\u00e1nak megs\u00e9rt\u00e9se, versenyhelyzetek \u00e9s mem\u00f3ria sziv\u00e1rg\u00e1sok felder\u00edt\u00e9s\u00e9t.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f Rust Foundation \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0443, \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0438\u0437 127 \u0442\u044b\u0441\u044f\u0447 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0432 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0435 crates.io, \u0431\u043e\u043b\u0435\u0435 24 \u0442\u044b\u0441\u044f\u0447 (19.11%) \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e «unsafe» \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0438\u0445 \u043d\u0435\u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u0443\u044e \u0440\u0430\u0431\u043e\u0442\u0443 \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u0431\u043b\u043e\u043a\u0430\u0445 \u043a\u043e\u0434\u0430, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0440\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0435\u0439, \u0432\u044b\u0437\u043e\u0432 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0438\u043b\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445. 34.35% \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0441\u043e\u0432\u0435\u0440\u0448\u0430\u044e\u0442 \u043f\u0440\u044f\u043c\u044b\u0435 \u0432\u044b\u0437\u043e\u0432\u044b \u0444\u0443\u043d\u043a\u0446\u0438\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116100","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Minden \u00f6t\u00f6dik Rust csomagban haszn\u00e1lj\u00e1k az unsafe m\u00f3dot | ProHoster","description":"A Rust Foundation nyilv\u00e1noss\u00e1gra hozta a statisztik\u00e1t, amely szerint a crates.io katal\u00f3gus\u00e1ban szerepl\u0151 127 ezer 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