{"id":91,"date":"2016-02-25T23:31:10","date_gmt":"2016-02-25T15:31:10","guid":{"rendered":"http:\/\/zsaber.com\/blog\/?p=91"},"modified":"2019-08-26T15:37:50","modified_gmt":"2019-08-26T07:37:50","slug":"%e4%b8%80%e4%b8%aa-inline-%e5%92%8c%e5%bc%95%e7%94%a8%e5%bc%95%e5%8f%91%e7%9a%84%e6%83%a8%e5%89%a7","status":"publish","type":"post","link":"http:\/\/zsaber.com\/blog\/p\/91","title":{"rendered":"[C++] \u4e00\u4e2a inline \u548c\u5f15\u7528\u5f15\u53d1\u7684\u60e8\u5267"},"content":{"rendered":"<p>\u6700\u8fd1\u9047\u5230\u4e00\u4e2a\u5947\u602a\u7684 BUG, \u7ec6\u8282\u5982\u4e0b:<\/p>\n<pre><code class=\"language-cpp\">\/\/ lib.h\nextern Type &amp;func(Type &amp;ret, Params params);\ninline Type funcT(Params params)\n{\n    Type ret;\n    return func(ret, params);\n}\n\n\/\/ lib.cpp\nType &amp;func(Type &amp;ret, Params params)\n{\n    \/\/ do something\n    return ret;\n}\n\n\/\/ caller.cpp\nstatic Type caller(void)\n{\n    \/\/ do something\n    return funcT(params);\n}<\/code><\/pre>\n<p>\u7784\u4e00\u773c\u4f3c\u4e4e\u6ca1\u5565\u95ee\u9898, \u7136\u800c\u6b8b\u9177\u7684\u4e8b\u5b9e\u662f, caller \u8fd4\u56de\u540e\u4f1a\u6302\u6389<\/p>\n<p>\u5bf9\u6c47\u7f16\u4ec0\u4e48\u7684\u4e0d\u719f, \u8fd8\u6ca1\u5348\u5230\u53ef\u4ee5\u53bb\u770b\u6c47\u7f16\u67e5 BUG, \u4e0d\u8fc7\u731c\u6d4b\u53ef\u80fd\u539f\u56e0\u5982\u4e0b:<\/p>\n<ol>\n<li>funcT \u7531\u4e8e inline \u88ab\u4ee3\u7801\u4f18\u5316, return \u7684\u65f6\u5019\u4e0d\u4f1a\u521b\u5efa\u4e00\u4e2a Type \u7684\u4e34\u65f6\u5bf9\u8c61<\/li>\n<li>func \u8fd4\u56de\u7684\u662f\u53c2\u6570\u7684\u5f15\u7528, \u5bfc\u81f4\u6700\u7ec8\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5c40\u90e8\u53d8\u91cf ret \u7684\u5f15\u7528<\/li>\n<li>caller \u8bbf\u95ee funcT \u7684\u8fd4\u56de\u503c\u7684\u65f6\u5019, \u8bbf\u95ee\u7684\u662f\u4e00\u4e2a\u5df2\u9500\u6bc1\u7684\u5c40\u90e8\u53d8\u91cf\u7684\u5f15\u7528, \u5bfc\u81f4\u6302\u4e86<\/li>\n<\/ol>\n<p>\u600e\u4e48\u89e3\u51b3\u5462? \u5f88\u7b80\u5355:<\/p>\n<pre><code class=\"language-cpp\">inline Type funcT(Params params)\n{\n    Type ret;\n#if 0\n    return func(ret, params);\n#else\n    func(ret, params);\n    return ret;\n#endif\n}<\/code><\/pre>\n<p>\u603b\u7ed3:<\/p>\n<p>C++ \u679c\u7136\u597d\u96be\u554a<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u9047\u5230\u4e00\u4e2a\u5947\u602a\u7684 BUG, \u7ec6\u8282\u5982\u4e0b: \/\/ lib.h extern Type &amp;func(Typ\u2026 <span class=\"read-more\"><a href=\"http:\/\/zsaber.com\/blog\/p\/91\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - 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