{"id":9138,"date":"2023-02-18T17:01:43","date_gmt":"2023-02-18T09:01:43","guid":{"rendered":"https:\/\/blog.iyatt.com\/?p=9138"},"modified":"2024-05-05T14:18:23","modified_gmt":"2024-05-05T06:18:23","slug":"c-%e8%af%ad%e8%a8%80%e6%8c%87%e9%92%88%e5%b8%b8%e9%87%8f%e5%92%8c%e5%b8%b8%e9%87%8f%e6%8c%87%e9%92%88","status":"publish","type":"post","link":"https:\/\/blog.iyatt.com\/?p=9138","title":{"rendered":"C \u8bed\u8a00\u6307\u9488\u5e38\u91cf\u548c\u5e38\u91cf\u6307\u9488"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">\u76ee\u5f55<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/blog.iyatt.com\/?p=9138\/#%E7%8E%AF%E5%A2%83\" >\u73af\u5883<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/blog.iyatt.com\/?p=9138\/#%E6%8C%87%E9%92%88%E5%B8%B8%E9%87%8F\" >\u6307\u9488\u5e38\u91cf<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/blog.iyatt.com\/?p=9138\/#%E5%B8%B8%E9%87%8F%E6%8C%87%E9%92%88\" >\u5e38\u91cf\u6307\u9488<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E7%8E%AF%E5%A2%83\"><\/span>\u73af\u5883<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Debian 11 \uff08arm64)<\/p>\n<p>\u7f16\u8bd1\u5668 gcc 10.2.1\uff1b\u7f16\u8bd1\u6807\u51c6 C17\uff1b\u53c2\u6570\uff1a-std=c17 -no-pie -Wall -Werror=return-type -Werror=address -Werror=sequence-point -Werror=format-security -Wextra -pedantic -Wimplicit-fallthrough -Wsequence-point -Wswitch-unreachable -Wswitch-enum -Wstringop-truncation -Wbool-compare -Wtautological-compare -Wfloat-equal -Wshadow=global -Wpointer-arith -Wpointer-compare -Wcast-align -Wcast-qual -Wwrite-strings -Wdangling-else -Wlogical-op -Wconversion -g -O0<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%8C%87%E9%92%88%E5%B8%B8%E9%87%8F\"><\/span>\u6307\u9488\u5e38\u91cf<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6307\u9488\u4e3a\u5e38\u91cf\uff0c\u5373\u6307\u9488\u4e0d\u80fd\u4fee\u6539\u6307\u5411<br \/>\n\u4f46\u662f\u6307\u9488\u6307\u5411\u5730\u5740\u5b58\u50a8\u7684\u503c\u662f\u53ef\u4ee5\u4fee\u6539\u7684<br \/>\n\u56e0\u4e3a\u6307\u5411\u7684\u5730\u5740\u4e0d\u80fd\u4fee\u6539\uff0c\u6240\u4ee5\u5fc5\u987b\u5728\u5b9a\u4e49\u65f6\u8fdb\u884c\u521d\u59cb\u5316\uff0c\u7ed9\u5b83\u4e00\u4e2a\u5730\u5740<\/p>\n<pre><code class=\"language-c\">int main()\n{\n    int a = 9;\n    int b = 1;\n    int * const c = &amp;a;\n\n    \/\/ \u65e0\u6cd5\u4fee\u6539\u6307\u5411\n    c = &amp;b;\n\n    \/\/ \u53ef\u4ee5\u4fee\u6539\u6307\u9488\u6307\u5411\u5730\u5740\u5b58\u50a8\u503c\n    *c = b;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676710309782.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 369px; --smush-placeholder-aspect-ratio: 369\/127;\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%B8%B8%E9%87%8F%E6%8C%87%E9%92%88\"><\/span>\u5e38\u91cf\u6307\u9488<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6307\u9488\u6307\u5411\u7684\u5730\u5740\u5b58\u50a8\u7684\u503c\u4e0d\u53ef\u4fee\u6539<br \/>\n\u4f46\u662f\u6307\u9488\u53ef\u4ee5\u4fee\u6539\u6307\u5411<br \/>\n\u7528\u5e38\u91cf\u6307\u9488\u6307\u5411\u67d0\u4e2a\u5730\u5740\uff0c\u901a\u8fc7\u8fd9\u4e2a\u6307\u9488\u8fdb\u884c\u4f7f\u7528\u5c31\u5177\u6709\u53ea\u8bfb\u5c5e\u6027\uff0c\u53ef\u4ee5\u4fdd\u62a4\u6570\u636e\u514d\u88ab\u4fee\u6539<\/p>\n<pre><code class=\"language-cpp\">int main()\n{\n    int a = 9;\n    int b = 1;\n    \/\/ \u4e0b\u9762\u4e24\u79cd\u90fd\u662f\u7b49\u4ef7\u7684\n    const int *c = a;\n    int const *d = b;\n\n    \/\/ \u6307\u9488\u6307\u5411\u5730\u5740\u5b58\u50a8\u7684\u503c\u4e0d\u53ef\u4fee\u6539\n    *c = b;\n\n    \/\/ \u6307\u9488\u6307\u5411\u7684\u5730\u5740\u53ef\u4ee5\u4fee\u6539\n    d = &amp;a;\n}<\/code><\/pre>\n<p><img decoding=\"async\" data-src=\"https:\/\/blog.iyatt.com\/wp-content\/uploads\/2023\/02\/image-1676710548569.png\" alt=\"file\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 447px; --smush-placeholder-aspect-ratio: 447\/207;\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u73af\u5883 Debian 11 \uff08arm64) \u7f16\u8bd1\u5668 gcc 10.2.1\uff1b\u7f16\u8bd1\u6807\u51c6 C17\uff1b\u53c2\u6570\uff1a-std=c1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"zakra_page_container_layout":"customizer","zakra_page_sidebar_layout":"customizer","zakra_remove_content_margin":false,"zakra_sidebar":"customizer","zakra_transparent_header":"customizer","zakra_logo":0,"zakra_main_header_style":"default","zakra_menu_item_color":"","zakra_menu_item_hover_color":"","zakra_menu_item_active_color":"","zakra_menu_active_style":"","zakra_page_header":true,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[1,589],"tags":[],"class_list":["post-9138","post","type-post","status-publish","format-standard","hentry","category-all","category-c-c"],"modified_by":"IYATT-yx","_links":{"self":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/9138","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9138"}],"version-history":[{"count":0,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=\/wp\/v2\/posts\/9138\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.iyatt.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}