{"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\/ro\/blog\/news\/v-yadre-linux-5-18-planiruyut-razreshit-ispolzovanie-standarta-yazyka-si-c11","title":{"rendered":"\u00cen kernel-ul Linux 5.18 se preconizeaz\u0103 autorizarea utiliz\u0103rii standardului de limbaj C C11","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen cadrul discu\u021biilor despre un set de patch-uri pentru corectarea problemelor legate de vulnerabilit\u0103\u021bile de tip Spectre \u00een codul pentru gestionarea listelor \u00eenl\u0103n\u021buite, a devenit clar c\u0103 problema ar putea fi rezolvat\u0103 mai elegant dac\u0103 \u00een nucleu ar fi permis codul \u00een limbajul C, conform unei versiuni mai noi a standardului. \u00cen prezent, codul ad\u0103ugat \u00een nucleu trebuie s\u0103 respecte specifica\u021biile ANSI C (C89), formulate \u00eenc\u0103 din 1989. <\/p>\n

Problema legat\u0103 de Spectre \u00een cod a fost cauzat\u0103 de continuarea utiliz\u0103rii unui iterator definit separat dup\u0103 ciclu - pentru iterarea elementelor unei liste conectate se folose\u0219te un macro, iar iteratorul ciclului este transmis \u00een acest macro, astfel c\u0103 este definit \u00een afara ciclului \u0219i r\u0103m\u00e2ne accesibil dup\u0103 ciclu. Utilizarea standardului C99 ar permite definirea variabilelor pentru ciclu \u00een blocul for(), ceea ce ar rezolva problema f\u0103r\u0103 a inventa solu\u021bii ocolitoare. <\/p>\n

Linus Torvalds a fost de acord cu ideea implement\u0103rii suportului pentru specifica\u021biile mai recente \u0219i a propus, \u00een nucleul 5.18, trecerea la utilizarea standardului C11, publicat \u00een 2011. \u00cen timpul verific\u0103rii preliminare, compilarea \u00een GCC \u0219i Clang \u00een noul mod a decurs f\u0103r\u0103 abateri. Dac\u0103 testele mai am\u0103nun\u021bite nu vor aduce probleme neprev\u0103zute, \u00een scripturile de compilare ale nucleului 5.18 op\u021biunea \u2018--std=gnu89\u2019 va fi \u00eenlocuit\u0103 cu \u2018--std=gnu11 -Wno-shift-negative-value\u2019. A fost luat\u0103 \u00een considerare \u0219i utilizarea standardului C17, \u00eens\u0103 \u00een acest caz ar fi fost necesar\u0103 cre\u0219terea versiunii minime suportate de GCC. Integrarea suportului C11 se \u00eencadreaz\u0103 \u00een cerin\u021bele actuale pentru versiunea GCC (5.1).
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/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\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47\u00cen nucleul Linux 5.18 se planific\u0103 autorizarea utiliz\u0103rii standardului limbajului C C11 | ProHoster","description":"\u00cen cadrul discu\u021biilor despre un set de patch-uri pentru corectarea problemelor legate de vulnerabilit\u0103\u021bile de tip Spectre \u00een codul pentru gestionarea listelor \u00eenl\u0103n\u021buite, a devenit clar c\u0103 problema ar putea fi rezolvat\u0103 mai elegant dac\u0103 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