{"id":103436,"date":"2022-02-25T21:37:00","date_gmt":"2022-02-25T19:37:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-5-18-planiruyut-razreshit-ispolzovanie-standarta-yazyka-si-c11"},"modified":"2022-02-25T21:37:00","modified_gmt":"2022-02-25T19:37:00","slug":"v-yadre-linux-5-18-planiruyut-razreshit-ispolzovanie-standarta-yazyka-si-c11","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/v-yadre-linux-5-18-planiruyut-razreshit-ispolzovanie-standarta-yazyka-si-c11","title":{"rendered":"Nel kernel Linux 5.18 si prevede di consentire l'uso dello standard del linguaggio C C11","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante il dibattito su un insieme di patch per correggere i problemi di vulnerabilit\u00e0 della classe Spectre nel codice per l'elaborazione di elenchi collegati, \u00e8 emerso chiaramente che il problema sarebbe stato risolto in modo pi\u00f9 elegante se fosse stata consentita l'inclusione di codice C conforme a una versione pi\u00f9 recente dello standard nel kernel. Attualmente, il codice kernel aggiunto deve rispettare la specifica ANSI C (C89), formulata nel 1989.     <\/p>\n<p>Il problema associato a Spectre nel codice \u00e8 stato causato dalla continuazione dell'uso di un iteratore definito separatamente dopo il ciclo \u2014 per iterare sugli elementi di una lista collegata, viene utilizzato un macro e poich\u00e9 l'iteratore del ciclo viene passato a questo macro, esso \u00e8 definito al di fuori del ciclo stesso e rimane accessibile dopo il ciclo. L'uso dello standard C99 avrebbe permesso di definire variabili per il ciclo nel blocco for(), risolvendo cos\u00ec il problema senza dover trovare delle soluzioni alternative.      <\/p>\n<p>Linus Torvalds ha concordato con l'idea di implementare il supporto per specifiche pi\u00f9 recenti e ha proposto di passare nel kernel 5.18 all'uso dello standard C11, pubblicato nel 2011. In una verifica preliminare, la compilazione in GCC e Clang nella nuova modalit\u00e0 \u00e8 avvenuta senza deviazioni. Se durante test pi\u00f9 accurati non si presenteranno problemi imprevisti, negli script di compilazione del kernel 5.18 l'opzione \u2018--std=gnu89\u2019 sar\u00e0 sostituita con \u2018--std=gnu11 -Wno-shift-negative-value\u2019. \u00c8 stata considerata anche la possibilit\u00e0 di utilizzare lo standard C17, ma in questo caso sarebbe stata necessaria un'adeguamento della versione minima supportata di GCC. L'inclusione del supporto per C11 rientra comunque nei requisiti attuali per la versione di GCC (5.1).<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56760\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u043d\u0430\u0431\u043e\u0440\u0430 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 Spectre \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0432 \u043a\u043e\u0434\u0435 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441\u043e \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u043c\u0438 \u0441\u043f\u0438\u0441\u043a\u0430\u043c\u0438, \u0441\u0442\u0430\u043b\u043e \u044f\u0441\u043d\u043e, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u0431\u044b \u0440\u0435\u0448\u0438\u0442\u044c \u0431\u043e\u043b\u0435\u0435 \u0438\u0437\u044f\u0449\u043d\u043e, \u0435\u0441\u043b\u0438 \u0431\u044b \u0432 \u044f\u0434\u0440\u043e \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u043b\u0441\u044f \u043a\u043e\u0434 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438, \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0431\u043e\u043b\u0435\u0435 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c\u044b\u0439 \u044f\u0434\u0440\u043e \u043a\u043e\u0434 \u0434\u043e\u043b\u0436\u0435\u043d \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 ANSI C (\u042189), [&hellip;]<\/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-103436","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u043d\u0430\u0431\u043e\u0440\u0430 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kernel.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/v-yadre-linux-5-18-planiruyut-razreshit-ispolzovanie-standarta-yazyka-si-c11","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412 \u044f\u0434\u0440\u0435 Linux 5.18 \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u044e\u0442 \u0440\u0430\u0437\u0440\u0435\u0448\u0438\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430 \u044f\u0437\u044b\u043a\u0430 \u0421\u0438 C11 | 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