{"id":1961,"date":"2016-04-10T20:18:32","date_gmt":"2016-04-10T12:18:32","guid":{"rendered":"http:\/\/boweihe.me\/?p=1961"},"modified":"2016-04-10T20:18:32","modified_gmt":"2016-04-10T12:18:32","slug":"c%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%ef%bc%8cstack-unwinding","status":"publish","type":"post","link":"https:\/\/dayandcarrot.space\/?p=1961","title":{"rendered":"C++\u5f02\u5e38\u5904\u7406\uff0cstack unwinding"},"content":{"rendered":"<p><strong>\u8fd9\u7bc7\u6587\u7ae0\u7684\u5185\u5bb9\u6458\u81ea\u300aC++\u6807\u51c6\u7a0b\u5e8f\u5e93\u300b2.2.3\u8282<\/strong><br \/>\nC++\u6807\u51c6\u7a0b\u5e8f\u5e93\u53ef\u4ee5\u5728\u4e0d\u6c61\u67d3\u51fd\u6570\u63a5\u53e3\u7684\u60c5\u51b5\u4e0b\u5904\u7406\u5f02\u5e38\u3002\u5982\u679c\u4f60\u9047\u5230\u4e00\u4e2a\u610f\u5916\u60c5\u51b5\uff0c\u53ef\u4ee5\u8dd1\u51fa\u5f02\u5e38\u6765\u505c\u6b62\u540e\u7eed\u6d41\u7a0b\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre class=\"lang:c++ decode:true \">class Error;\nvoid f()\n{\n    ...\n    if(exception-condition)\n        throw Error();\n    }\n    ...\n}<\/pre>\n<p>\u5176\u4e2dthrow\u5f00\u59cb\u4e86stack unwinding\u8fc7\u7a0b\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u4ed6\u5c06\u4f7f\u5f97\u9000\u79bb\u4efb\u4f55\u51fd\u6570\u533a\u6bb5\u65f6\u7684\u884c\u4e3a\u50cf\u4ee5return\u8bed\u53e5\u8fd4\u56de\u4e00\u6837\uff0c\u7136\u800c\u7a0b\u5e8f\u5374\u4e0d\u4f1a\u8df3\u8f6c\u5230\u4efb\u4f55\u5730\u70b9\u3002<strong>\u5bf9\u4e8e\u6240\u6709\u88ab\u58f0\u660e\u4e0e\u67d0\u533a\u6bb5\u2014\u2014\u800c\u8be5\u533a\u6bb5\u5374\u56e0\u7a0b\u5e8f\u5f02\u5e38\u800c\u9000\u79bb\u2014\u2014\u7684\u5c40\u90e8\u5bf9\u8c61\u800c\u8a00\uff0c\u4f1a\u8c03\u7528\u5b83\u7684\u6790\u6784\u51fd\u6570<\/strong>\u3002<strong>stack unwinding\u7684\u52a8\u4f5c\u4f1a\u6301\u7eed\u5230\u9000\u51famain()\u6216\u88ab\u67d0\u4e2acatch\u5b50\u53e5\u6355\u6349\u5e76\u5904\u7406\u4e86\u5f02\u5e38\u4e3a\u6b62\u3002<\/strong><br \/>\n\u5f02\u5e38\u5bf9\u8c61(exception objects)\u5176\u5b9e\u5c31\u662f\u4e00\u822c\u7c7b\u6216\u57fa\u672c\u7c7b\u7684\u5bf9\u8c61\uff0c\u53ef\u4ee5\u662fint,string\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u4e5f\u53ef\u4ee5\u662f\u67d0\u4e2a\u6a21\u677f\u7c7b\u5bf9\u8c61\u3002<br \/>\n&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u7684\u5185\u5bb9\u6458\u81ea\u300aC++\u6807\u51c6\u7a0b\u5e8f\u5e93\u300b2.2.3\u8282 C++\u6807\u51c6\u7a0b\u5e8f\u5e93\u53ef\u4ee5\u5728\u4e0d\u6c61\u67d3\u51fd\u6570\u63a5\u53e3\u7684\u60c5\u51b5\u4e0b\u5904\u7406\u5f02\u5e38\u3002\u5982\u679c\u4f60\u9047\u5230\u4e00\u4e2a\u610f\u5916\u60c5\u51b5\uff0c\u53ef\u4ee5\u8dd1\u51fa\u5f02\u5e38\u6765\u505c\u6b62\u540e\u7eed\u6d41\u7a0b\uff0c\u4f8b\u5982\uff1a class Error; 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