{"id":676,"date":"2017-02-08T11:25:16","date_gmt":"2017-02-08T03:25:16","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=676"},"modified":"2017-02-08T11:25:16","modified_gmt":"2017-02-08T03:25:16","slug":"%e4%bd%bf%e7%94%a8-stdc99%e5%8f%82%e6%95%b0%e6%8f%90%e7%a4%basigset_t%e6%9c%aa%e5%ae%9a%e4%b9%89","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=676","title":{"rendered":"\u4f7f\u7528-std=c99\u53c2\u6570\u63d0\u793asigset_t\u672a\u5b9a\u4e49"},"content":{"rendered":"<p>\u7f16\u8bd1\u7a0b\u5e8f\u65f6\u52a0\u4e86<span style=\"color: #ff0000;\">-std=c99<\/span>\u540e\uff0c\u63d0\u793a<span style=\"color: #ff0000;\">sigset_t<\/span>\u672a\u5b9a\u4e49\u3002<\/p>\n<p>$ gcc -g -std=c99 test.c -o test<br \/>\ntest.c: In function \u2018main\u2019:<br \/>\ntest.c:6: error: \u2018sigset_t\u2019 undeclared (first use in this function)<br \/>\ntest.c:6: error: (Each undeclared identifier is reported only once<br \/>\ntest.c:6: error: for each function it appears in.)<br \/>\ntest.c:6: error: expected \u2018;\u2019 before \u2018newmask\u2019<br \/>\ntest.c:7: error: expected \u2018;\u2019 before \u2018oldmask\u2019<br \/>\ntest.c:9: warning: implicit declaration of function \u2018sigemptyset\u2019<br \/>\ntest.c:9: error: \u2018oldmask\u2019 undeclared (first use in this function)<br \/>\ntest.c:11: warning: implicit declaration of function \u2018sigprocmask\u2019<\/p>\n<p>\u56e0\u4e3a\u5728C\u6807\u51c6\u4e2dsigset_t\u5e76\u4e0d\u662f&lt;signal.h&gt;\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u8981\u5728\u7f16\u8bd1\u65f6\u4f7f\u7528-D_GNU_SOURCE\u9009\u9879\uff0c\u5b83\u8868\u793a\u4ee3\u7801\u7b26\u5408GNU\u6807\u51c6\u3002 \u5c31\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>gcc -g -std=c99 <span style=\"color: #993300;\">-D_GNU_SOURCE<\/span> test.c -o test<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7f16\u8bd1\u7a0b\u5e8f\u65f6\u52a0\u4e86-std=c99\u540e\uff0c\u63d0\u793asigset_t\u672a\u5b9a\u4e49\u3002 $ gcc -g -std=c99 test.c -o test test.c: In func&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=676\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,10],"tags":[],"class_list":["post-676","post","type-post","status-publish","format-standard","hentry","category-apue","category-c"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=676"}],"version-history":[{"count":1,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/676\/revisions"}],"predecessor-version":[{"id":677,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/676\/revisions\/677"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}