{"id":6657,"date":"2026-04-13T11:50:50","date_gmt":"2026-04-13T11:50:50","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/stack-pointer\/"},"modified":"2026-04-13T11:50:50","modified_gmt":"2026-04-13T11:50:50","slug":"stak-markor","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/da\/dictionary\/stack-pointer\/","title":{"rendered":"Stak-mark\u00f8r"},"content":{"rendered":"<h1>Stak-mark\u00f8r<\/h1>\n<p>Stakpointeren er en vigtig komponent i computerarkitekturen, som er ansvarlig for at styre stakken. <a href=\"https:\/\/thecodest.co\/da\/blog\/app-data-collection-security-risks-value-and-types-explored\/\">data<\/a> struktur. Stakken er et hukommelsesomr\u00e5de, der bruges af computerprogrammer til at gemme midlertidige data, f.eks. funktionskald, lokale variabler og returadresser. Stakpointeren er et register, der indeholder hukommelsesadressen for toppen af stakken, som er det sted, hvor det n\u00e6ste element vil blive skubbet eller poppet fra stakken.<\/p>\n<p>Stakpointeren er typisk implementeret som et specialregister i CPU'en, der bruges af operativsystemet og compileren til at styre stakken. N\u00e5r en funktion kaldes, bruges stakpointeren til at allokere plads p\u00e5 stakken til funktionens lokale variabler og til at gemme returadressen. N\u00e5r funktionen returnerer, bruges stakpointeren til at deallokere stakpladsen og gendanne programmets tidligere tilstand.<\/p>\n<p>Stakpointeren er en kritisk komponent i computersikkerhed, da den ofte bruges til at udnytte s\u00e5rbarheder i software. Stakbaserede bufferoverl\u00f8bsangreb er f.eks. afh\u00e6ngige af at overskrive returadressen p\u00e5 stakken for at omdirigere programmets udf\u00f8relsesflow til en ondsindet <a href=\"https:\/\/thecodest.co\/da\/dictionary\/what-is-code-refactoring\/\">Kode<\/a>. For at forhindre s\u00e5danne angreb implementerer moderne operativsystemer og compilere forskellige sikkerhedsmekanismer, s\u00e5som stack canaries, address space layout randomization (ASLR) og non-executable memory (NX), der g\u00f8r det sv\u00e6rere for angribere at udnytte stack-baserede s\u00e5rbarheder.<\/p>\n<p>Kort sagt er stakmark\u00f8ren et grundl\u00e6ggende begreb i datalogi, som spiller en afg\u00f8rende rolle i h\u00e5ndteringen af stakdatastrukturen og for sikkerheden i computersystemer. At forst\u00e5, hvordan stakmark\u00f8ren fungerer, er afg\u00f8rende for <a href=\"https:\/\/thecodest.co\/da\/blog\/hire-software-developers\/\">softwareudviklere<\/a>systemadministratorer og sikkerhedsprofessionelle, der arbejder med low-level <a href=\"https:\/\/thecodest.co\/da\/blog\/top-programming-languages-to-build-e-commerce\/\">programmeringssprog<\/a> og operativsystemer.<\/p>","protected":false},"excerpt":{"rendered":"<p>L\u00e6r om stakpointeren, en vigtig komponent i computerarkitekturen, som styrer stakkens datastruktur og sikrer sikkerheden i computersystemer.<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6657","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Stack Pointer - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about the stack pointer, a crucial component of computer architecture that manages the stack data structure and ensures the security of computer systems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/da\/ordbog\/stak-markor\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Stack Pointer\" \/>\n<meta property=\"og:description\" content=\"Learn about the stack pointer, a crucial component of computer architecture that manages the stack data structure and ensures the security of computer systems.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thecodest.co\/da\/ordbog\/stak-markor\/\" \/>\n<meta property=\"og:site_name\" content=\"The Codest\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thecodest.co\/app\/uploads\/2024\/06\/cover-image.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/stack-pointer\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/stack-pointer\\\/\",\"name\":\"Stack Pointer - 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