{"id":154965,"date":"2026-01-24T23:11:55","date_gmt":"2026-01-24T21:11:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0"},"modified":"2026-01-24T23:11:55","modified_gmt":"2026-01-24T21:11:55","slug":"vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-standartnyh-si-bibliotek-glibc-2-43-i-newlib-4-6-0","title":{"rendered":"Vydanie \u0161tandardn\u00fdch C kni\u017en\u00edc Glibc 2.43 a newlib 4.6.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po \u0161iestich mesiacoch v\u00fdvoja bol publikovan\u00fd release syst\u00e9movej kni\u017enice GNU C Library 2.43 (glibc), ktor\u00e1 plne vyhovuje po\u017eiadavk\u00e1m noriem ISO C23 a POSIX.1-2024. Na vytvoren\u00ed nov\u00e9ho vydania sa podie\u013ealo 69 v\u00fdvoj\u00e1rov.     <\/p>\n<p>Medzi realizovan\u00e9 vylep\u0161enia v Glibc 2.43 patr\u00ed:   <\/p>\n<ul>\n<li class=\"l\"> Pridan\u00e1 experiment\u00e1lna mo\u017enos\u0165 zostavenia kompil\u00e1torom Clang, ktor\u00e1 je zatia\u013e dostupn\u00e1 len pre platformy aarch64-linux-gnu a x86_64-linux-gnu pri pou\u017eit\u00ed runtime kompatibiln\u00e9ho s libgcc. Na zostavenie Glibc je potrebn\u00e1 aspo\u0148 verzia Clang 18.\n<li class=\"l\"> Pre syst\u00e9my Linux bola pridan\u00e1 funkcia mseal(), ktor\u00e1 umo\u017e\u0148uje procesom nastavi\u0165 z\u00e1mok na zmenu ur\u010dit\u00fdch \u010dast\u00ed ich adresn\u00e9ho priestoru.\n<li class=\"l\"> Pre syst\u00e9my Linux bola pridan\u00e1 funkcia openat2(), na rozdiel od funkcie openat(), ktor\u00e1 podporuje s\u00fabor \u010fal\u0161\u00edch pr\u00edznakov na obmedzenie opr\u00e1vnenia cestovania k s\u00faboru (z\u00e1kaz prekonania bodov pripojenia, symbolick\u00fdch odkazov, magic-odkazov (\\\/proc\\\/PID\\\/fd), komponentov &#171;..\\\/&#187;).\n<li class=\"l\"> Boli pridan\u00e9 funkcie free_sized, free_aligned_sized, memset_explicit a memalignment, ktor\u00e9 sa objavili v \u0161tandarde C23.\n<li class=\"l\"> V s\u00falade so \u0161tandardom C23 je volanie assert definovan\u00e9 ako makro s premenn\u00fdm po\u010dtom argumentov, podporuj\u00face v\u00fdrazy s \u010diarkou vo vn\u00fatri inicializ\u00e1tora.\n<li class=\"l\"> V s\u00falade so \u0161tandardom C23 s\u00fa funkcie bsearch, memchr, strchr, strpbrk, strrchr, strstr, wcschr, wcspbrk, wcsrchr, wcsstr a wmemchr, ktor\u00e9 vracaj\u00fa ukazovatele na vstupn\u00e9 polia, prekryt\u00e9 ako makr\u00e1, ktor\u00e9 vracaj\u00fa ukazovate\u013e na typ s kvalifik\u00e1torom &#171;const&#187;, ak je vstupn\u00fd argument ukazovate\u013eom na typ s kvalifik\u00e1torom &#171;const&#187;.\n<li class=\"l\"> Do hlavi\u010dkov\u00e9ho s\u00faboru math.h boli pridan\u00e9 defin\u00edcie typov long_double_t, _Float32_t, _Float64_t a _Float128_t, ktor\u00e9 sa objavili v \u0161tandarde C23.\n<li class=\"l\"> Boli pridan\u00e9 volite\u013en\u00e9 re\u017eimy po\u010d\u00edtania \u010dasu TIME_MONOTONIC (nepretr\u017eite sa zvy\u0161uj\u00faci \u010das, nez\u00e1visl\u00fd od zmeny syst\u00e9mov\u00fdch hod\u00edn), TIME_ACTIVE a TIME_THREAD_ACTIVE (\u010das akt\u00edvneho vykon\u00e1vania procesu alebo vl\u00e1kna) na pou\u017eitie vo funkcii timespec_get.\n<li class=\"l\"> Z projektu CORE-MATH boli prenesen\u00e9 optimalizovan\u00e9 varianty matematick\u00fdch funkci\u00ed acosh, asinh, atanh, erf, erfc, lgamma a tgamma.\n<li class=\"l\"> Boli pridan\u00e9 optimalizovan\u00e9 implement\u00e1cie funkci\u00ed fma, fmaf, remainder, remaindef, frexpf, frexp, frexpl (binary128) a frexpl (intel96).\n<li class=\"l\"> Zv\u00fd\u0161en\u00fd v\u00fdkon matematick\u00fdch funkci\u00ed acosf, acoshf, asinhf, atan2f, atanhf, coshf, fmodf, lgammaf\/lgammaf_r, log10f, remainderf, sinhf, sqrtf, tgammaf, y0\/j0, y1\/j1 a yn\/jn, v\u010faka odstr\u00e1neniu k\u00f3du na spracovanie ch\u00fdb SVID (volanie u\u017e\u00edvate\u013eskej funkcie matherr pri chybe) pre nov\u00e9 zostavy (pre zachovanie kompatibility s u\u017e zostaven\u00fdmi programami zostali v re\u017eime compat).\n<li class=\"l\"> Na syst\u00e9moch x86 bola pridan\u00e1 podpora procesorov Intel Nova Lake a Wildcat Lake.\n<li class=\"l\"> Na syst\u00e9moch AArch64 bola funkcia malloc predvolene povolen\u00e1 s podporou ve\u013ek\u00fdch pam\u00e4\u0165ov\u00fdch str\u00e1n (transparent huge pages) s ve\u013ekos\u0165ou 2MB (parameter ibc.malloc.hugetlb je teraz nastaven\u00fd na 1). Vo funkcii clone() bola implementovan\u00e1 deaktiv\u00e1cia stavu ZA (Z-Array) na CPU s podporou roz\u0161\u00edrenia SME (Scalable Matrix Extension).\n<li class=\"l\"> Pre syst\u00e9my AArch64, ktor\u00e9 podporuj\u00fa roz\u0161\u00edrenie BTI (Branch Target Identification), bola pridan\u00e1 konfigur\u00e1cia glibc.cpu.aarch64_bti, ktor\u00e1 umo\u017e\u0148uje vyn\u00fati\u0165 aktiv\u00e1ciu BTI pre v\u0161etky spustite\u013en\u00e9 s\u00fabory a kni\u017enice. BTI zabezpe\u010duje blokovanie prechodov na \u013eubovo\u013en\u00e9 miesta k\u00f3du na ochranu pred vytv\u00e1ran\u00edm gadgetov v exploit\u00e1ch, ktor\u00e9 pou\u017e\u00edvaj\u00fa techniky n\u00e1vratov\u00e9ho orientovan\u00e9ho programovania.\n<li class=\"l\"> Na syst\u00e9moch AArch64, ktor\u00e9 podporuj\u00fa jedno z roz\u0161\u00edren\u00ed na ochranu vetvenia (Branch Target Identification alebo Guarded Control Stack), je povolen\u00e9 pou\u017eitie premennej prostredia &#171;LD_DEBUG=security&#187; na v\u00fdstup upozornen\u00ed linkerom pri na\u010d\u00edtan\u00ed spustite\u013en\u00fdch s\u00faborov a kni\u017en\u00edc, ktor\u00e9 tieto roz\u0161\u00edrenia nepodporuj\u00fa.\n<li class=\"l\"> Pre syst\u00e9my AArch64 boli pridan\u00e9 vektorov\u00e9 varianty funkci\u00ed exp2m1, exp10m1, log10p1, log2p1 a rsqrt.\n<li class=\"l\"> Pre architekt\u00faru RISC-V bola pridan\u00e1 optimalizovan\u00e1 implement\u00e1cia funkcie memset, vyu\u017e\u00edvaj\u00faca roz\u0161\u00edrenie RVV (RISC-V Vector).\n<li class=\"l\"> V testovacej sade bola v\u00fdrazne roz\u0161\u00edren\u00e1 kontrola mnohothreadovania a funkci\u00ed scanf, strerror a strsignal.\n<li class=\"l\"> \u00dadaje o k\u00f3dovan\u00ed, inform\u00e1cie o typoch znakov a tabu\u013eky transliter\u00e1cie boli aktualizovan\u00e9 na podporu \u0161pecifik\u00e1cie Unicode 17.0.0.\n<li class=\"l\"> V implement\u00e1cii funk\u010dnosti LD_PROFILE sa prestalo pou\u017e\u00edva\u0165 predvolen\u00e9 umiestnenie (var\/tmp) na zapisovanie profilovac\u00edch \u00fadajov. Pre zachovanie t\u00fdchto \u00fadajov je teraz vy\u017eadovan\u00e9 explicitn\u00e9 ur\u010denie umiestnenia prostredn\u00edctvom premennej prostredia LD_PROFILE_OUTPUT.\n<li class=\"l\"> Boli odstr\u00e1nen\u00e9 zranite\u013enosti:\n<ul>\n<li class=\"l\"> CVE-2026-0861 &#8212; prete\u010denie cel\u00e9ho \u010d\u00edsla vo funkcii memalign, \u010do vedie k po\u0161kodeniu haldy.\n<li class=\"l\"> CVE-2026-0915 &#8212; \u00fanik obsahu z\u00e1sobn\u00edka vo funkci\u00e1ch getnetbyaddr a getnetbyaddr_r.\n<li class=\"l\"> CVE-2025-15281 &#8212; vr\u00e1tenie neinitializovanej pam\u00e4te, ktor\u00e1 m\u00f4\u017ee obsahova\u0165 zvy\u0161kov\u00e9 d\u00e1ta, pri pou\u017eit\u00ed funkcie wordexp s parametrami WRDE_REUSE a WRDE_APPEND.      <\/ul>\n<\/ul>\n<p>Navy\u0161e, po roku v\u00fdvoja projekt Cygwin zverejnil vydanie \u0161tandardnej C kni\u017enice newlib 4.6.0, ktor\u00e1 je vyv\u00edjan\u00e1 in\u017einiermi z Red Hat. Kni\u017enica sa zameriava na poskytovanie kompaktn\u00e9ho spracovania \u0161tandardnej C kni\u017enice (libc), vhodnej na pou\u017eitie v embedded syst\u00e9moch s mal\u00fdm mno\u017estvom trval\u00e9ho \u00falo\u017eiska a opera\u010dnej pam\u00e4te. K\u00f3d projektu je nap\u00edsan\u00fd v jazyku C a je distribu\u010dn\u00fd pod licenciou LGPLv2.      <\/p>\n<p> V novej verzii newlib:  <\/p>\n<ul>\n<li class=\"l\"> Roz\u0161\u00edren\u00e1 podpora \u0161pecifik\u00e1cie POSIX.1-2024.\n<li class=\"l\"> Zv\u00fd\u0161en\u00fd v\u00fdkon funkci\u00ed memcpy, mempcpy a memmove.\n<li class=\"l\"> Pridan\u00e1 vo\u013eba &#171;&#8212;enable-newlib-hw-misaligned-access&#187;.\n<li class=\"l\"> Optimalizovan\u00e1 architekt\u00fara RISC-V pre funkcie s\u00e9rie mem* a str*.\n<li class=\"l\"> Prepracovan\u00fd k\u00f3d spracovania lokal\u00edt, ktor\u00fd sa zbavil glob\u00e1lnej premennej global_locale_string v prospech samostatn\u00fdch premenn\u00fdch locale_string pre ka\u017ed\u00fd objekt lokality s typom locale_t.\n<li class=\"l\"> Pridan\u00e1 podpora novej platformy m68k-atari-elf.\n<li class=\"l\"> Z kni\u017enice FreeBSD gdtoa bol presunut\u00fd k\u00f3d strtorQ.c, ktor\u00fd sa pou\u017e\u00edva na implement\u00e1ciu podpory 128-bitov\u00e9ho typu &#171;long double&#187; vo funkcii strtold.\n<li class=\"l\"> \u00dadaje k\u00f3dovania boli aktualizovan\u00e9 na Unicode 17.0.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64670\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 GNU C Library 2.43 (glibc), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f\u043c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 ISO C23 \u0438 POSIX.1-2024. \u0412 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u0438\u043d\u044f\u043b\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0435 69 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432. \u0418\u0437 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0432 Glibc 2.43 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u0431\u043e\u0440\u043a\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u043e\u043c Clang, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043a\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c aarch64-linux-gnu \u0438 x86_64-linux-gnu \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-154965","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 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