{"id":1880,"date":"2012-12-08T05:16:52","date_gmt":"2012-12-07T21:16:52","guid":{"rendered":"https:\/\/www.csslayer.info\/wordpress\/?p=1880"},"modified":"2012-12-08T05:16:52","modified_gmt":"2012-12-07T21:16:52","slug":"clang-inline","status":"publish","type":"post","link":"https:\/\/www.csslayer.info\/wordpress\/linux\/clang-inline\/","title":{"rendered":"Clang \u7684 inline"},"content":{"rendered":"

\u770b\uff0c\u6d3b\u4e86\u8fd9\u4e48\u4e45\uff0c\u4f9d\u7136\u53ef\u4ee5\u5f53\u5c0f\u767d\u3002<\/p>\n

Clang \u7684 inline \u662f\u600e\u4e48\u56de\u4e8b\u5462\uff1f<\/p>\n

\u5148\u6765\u6bb5\u4ee3\u7801\uff1a<\/p>\n

\u00a0inline void f()\r\n{\r\n}\r\n\r\nint main()\r\n{\r\n\u00a0\u00a0\u00a0 f();\r\n\u00a0\u00a0\u00a0 return 0;\r\n}<\/pre>\n
\u7136\u540e<\/p>\n
$ clang main.c \r\n\/tmp\/main-hn0696.o: In function `main':\r\nmain.c:(.text+0x12): undefined reference to `f'\r\nclang: error: linker command failed with exit code 1 (use -v to see invocation)<\/pre>\n
WTF\uff1f\u8fd9\u4e0d\u79d1\u5b66\uff01<\/p>\n
\u597d\u5427\uff0c\u6211\u4eec\u6765\u5b66\u4e60\u4e0bclang \u7684inline \u7684behavior\uff0c\u6362\u53e5\u8bdd\u8bf4\uff0cC99\u7684\u3002\uff08http:\/\/clang.llvm.org\/compatibility.html#inline<\/a>\uff09<\/p>\n
static inline\uff1a\u6c38\u8fdc\u5c55\u5f00\u4ee3\u7801<\/p>\n
inline\uff1a\u5728\u7f16\u8bd1\u5668\u89c9\u5f97\u5e94\u8be5\u5c55\u5f00\u7684\u65f6\u5019\u5c55\u5f00\uff0c\u4f8b\u5982\u5728debug\u7684\u65f6\u5019\uff0c\u4e0d\u5c55\u5f00\u3002<\/p>\n
\u6240\u4ee5\u4f60\u4f1a\u53d1\u73b0<\/p>\n
$ clang main.c -O2<\/pre>\n
\u662f\u6ca1\u95ee\u9898\u7684\u3002\u56e0\u4e3a\u6b64\u65f6 f() \u88ab\u5f53\u4f5c inline \u5c55\u5f00\u4e86\u6240\u4ee5\u5e76\u4e0d\u9700\u8981\u89e3\u6790 f \u7684\u7b26\u53f7\u3002<\/p>\n
\u7ed3\u8bba\uff1a<\/p>\n
\u5199static inline\uff0c\u6216\u8005\u5c31\u4e0dinline\u3002\u6216\u8005\u8ba9 clang \u7528 gnu89 \u7684\u65b9\u8a00\uff0c\u4f46\u662f\u8fd9\u5e76\u4e0d\u63a8\u8350\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u770b\uff0c\u6d3b\u4e86\u8fd9\u4e48\u4e45\uff0c\u4f9d\u7136\u53ef\u4ee5\u5f53\u5c0f\u767d\u3002 Clang \u7684 inline \u662f\u600e\u4e48\u56de\u4e8b\u5462\uff1f \u5148\u6765\u6bb5\u4ee3\u7801\uff1a \u00a0inline void f() { } int main() { \u00a0\u00a0\u00a0 f(); \u00a0\u00a0\u00a0 return 0; } \u7136\u540e $ clang main.c \/tmp\/main-hn0696.o: In function `main’: main.c:(.text+0x12): undefined reference to `f’ clang: error: linker command failed with exit … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1880","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1880","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/comments?post=1880"}],"version-history":[{"count":1,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1880\/revisions"}],"predecessor-version":[{"id":1881,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/posts\/1880\/revisions\/1881"}],"wp:attachment":[{"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/media?parent=1880"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/categories?post=1880"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.csslayer.info\/wordpress\/wp-json\/wp\/v2\/tags?post=1880"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}