{"id":4217,"date":"2020-04-03T12:34:34","date_gmt":"2020-04-03T04:34:34","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4217"},"modified":"2020-04-03T12:34:34","modified_gmt":"2020-04-03T04:34:34","slug":"%e5%bc%82%e5%b8%b8","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4217","title":{"rendered":"\u5f02\u5e38"},"content":{"rendered":"
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\u539f\u6587\u5730\u5740<\/a><\/p>\n

 <\/p>\n<\/div>\n

8.1 \u57fa\u672c\u7528\u6cd5<\/h2>\n

\u5bf9\u5f02\u5e38\u7684\u5904\u7406\uff1a<\/p>\n

    \n
  • \u5f15\u53d1\u5f02\u5e38\uff1b<\/li>\n
  • \u4f7f\u7528\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\uff08exception handler\uff09\u6355\u6349\u5f02\u5e38\uff1b<\/li>\n
  • \u4f7f\u7528try\u5757\u3002<\/li>\n<\/ul>\n

    \u8981\u5728C++\u4f7f\u7528\u5f02\u5e38\u673a\u5236\uff0c\u53ef\u4ee5\u5728\u7a0b\u5e8f\u7684try<\/code>\u5757\u5185\u51fa\u73b0\u95ee\u9898\u65f6\u4f7f\u7528throw<\/code>\u8bed\u53e5\u629b\u51fa\u5f02\u5e38\uff08\u4e00\u4e2a\u53d8\u91cf\/\u5e38\u91cf\uff09\u3002
    \n\u5728try<\/code>\u5757\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\u53ef\u4ee5\u5229\u7528\u5176\u540e\u7684catch<\/code>\u5757\uff08\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f\uff09\u6355\u6349\u3002
    \ncatch<\/code>\u5757\u901a\u8fc7\u8bc6\u522b\u629b\u51fa\u7684\u5f02\u5e38\u7c7b\u578b\u6355\u6349\u5f02\u5e38\uff08catch<\/code>\u5757\u7c7b\u4f3c\u4e8e\u51fd\u6570\u5b9a\u4e49\uff09\uff0c\u5e76\u5728\u6267\u884c\u5b8c\u540e\u8fd4\u56de\u5230\u629b\u51fa\u5f02\u5e38\u7684\u8bed\u53e5\u7684\u4e0b\u4e00\u4e2a\u8bed\u53e5\u3002<\/p>\n

    \u5982\u679c\u7a0b\u5e8f\u5f15\u53d1\u4e86\u5f02\u5e38\u800c\u6ca1\u6709\u5728try<\/code>\u5757\u5185\u6216\u6ca1\u6709\u5339\u914d\u7684\u5904\u7406\u7a0b\u5e8f\uff08catch<\/code>\u5757\uff09\u51fd\u6570\u4f1a\u8c03\u7528abort()<\/code>\u51fd\u6570\uff0c\u4e0d\u8fc7\u8fd9\u4e00\u884c\u4e3a\u53ef\u4ee5\u4fee\u6539\u3002<\/p>\n

    8.2 \u5c06\u5bf9\u8c61\u7528\u4f5c\u5f02\u5e38\u7c7b\u578b<\/h2>\n

    \u901a\u5e38\uff0c\u5c06\u5bf9\u8c61\u4f5c\u4e3a\u5f02\u5e38\u629b\u51fa\u3002\u8fd9\u6837\u505a\u7684\u91cd\u8981\u4f18\u70b9\u4e4b\u4e00\u662f\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u5f02\u5e38\u7c7b\u578b\u6765\u533a\u5206\u5f15\u53d1\u7684\u95ee\u9898\u3002<\/p>\n

    8.3 \u6808\u89e3\u9000<\/h2>\n

    C++\u901a\u5e38\u5c06\u8c03\u7528\u51fd\u6570\u7684\u6307\u4ee4\u7684\u5730\u5740\uff08\u8fd4\u56de\u5730\u5740\uff09\u653e\u5728\u6808\u4e2d\u653e\u5728\u6808\u4e2d\u3002\u5f53\u88ab\u8c03\u7528\u51fd\u6570\u6267\u884c\u5b8c\u6bd5\uff08return<\/code>\uff09\u65f6\uff0c\u7a0b\u5e8f\u5229\u7528\u6b64\u5730\u5740\u786e\u5b9a\u4ece\u54ea\u91cc\u7ee7\u7eed\u6267\u884c\u3002
    \n\u6b64\u5916\uff0c\u82e5\u5728\u51fd\u6570\u4e2d\u521b\u5efa\u4e86\u81ea\u52a8\u53d8\u91cf\uff0c\u540e\u8005\u4e5f\u4f1a\u88ab\u653e\u8fdb\u6808\u4e2d\uff0c\u82e5\u8c03\u7528\u4e86\u4e00\u4e2a\u51fd\u6570\uff0c\u88ab\u8c03\u7528\u51fd\u6570\u7684\u4fe1\u606f\u4e5f\u4f1a\u88ab\u5b58\u5165\u6808\u4e2d\u3002\u6bcf\u4e2a\u51fd\u6570\u5728\u6267\u884c\u5b8c\u540e\u90fd\u4f1a\u6309\u538b\u6808\u7684\u9006\u5e8f\u91ca\u653e\u6808\u4e2d\u7684\u4fe1\u606f\uff0c\u76f4\u5230\u91ca\u653e\u4e86\u7b2c\u4e00\u4e2a\u8fd4\u56de\u5730\u5740\u3002<\/p>\n

    \u7136\u800c\u5982\u679c\u51fd\u6570\u662f\u56e0\u4e3a\u5f02\u5e38\u800c\u975ereturn<\/code>\u8bed\u53e5\u8fd4\u56de\uff0c\u5219\u4e0d\u4f1a\u5728\u91ca\u653e\u4e86\u7b2c\u4e00\u4e2a\u8fd4\u56de\u5730\u5740\u540e\u505c\u6b62\u91ca\u653e\uff0c\u800c\u662f\u4f1a\u7ee7\u7eed\u91ca\u653e\uff0c\u76f4\u5230\u91ca\u653e\u4e86\u7b2c\u4e00\u4e2a\u5728try<\/code>\u5757\u5185\u7684\u8fd4\u56de\u5730\u5740\u3002
    \n\u7136\u540e\u4f1a\u5c06\u63a7\u5236\u6743\u4ea4\u7ed9\u7d27\u8ddf\u5176\u540e\u7684catch<\/code>\u5757\uff0c\u800c\u975e\u63a5\u7740\u8fd0\u884c\u51fd\u6570\u8c03\u7528\u7684\u4e0b\u4e00\u6761\u8bed\u53e5\u3002<\/p>\n

    \u5728\u6808\u89e3\u9000\u8fc7\u7a0b\u4e2d\uff0c\u81ea\u52a8\u53d8\u91cf\u4f1a\u88ab\u81ea\u52a8\u91ca\u653e\uff0c\u82e5\u81ea\u52a8\u53d8\u91cf\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u90a3\u4e48\u5bf9\u8c61\u7684\u6790\u6784\u51fd\u6570\u4e5f\u4f1a\u88ab\u81ea\u52a8\u8c03\u7528\u3002<\/p>\n

    8.4 \u5f02\u5e38\u89c4\u8303\uff08\u4e0d\u63d0\u5021\u4f7f\u7528\uff09<\/h2>\n
    double<\/span> harm<\/span>(double<\/span> a)<\/span> throw<\/span>(bad_thing)<\/span><\/span>;\r\ndouble<\/span> marm<\/span>(double<\/span> a)<\/span> throw<\/span>()<\/span><\/span>;\r\n<\/code><\/pre>\n
    \u5f02\u5e38\u89c4\u8303\u51fa\u73b0\u4e8e\u51fd\u6570\u539f\u578b\u6216\u5b9a\u4e49\u4e2d\uff0c\u53ef\u4ee5\u5305\u542b\u7c7b\u578b\u5217\u8868\uff08\u6307\u51fa\u53ef\u80fd\u53d1\u751f\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u6709\u591a\u4e2a\uff09\uff0c\u4e5f\u53ef\u4e0d\u5305\u542b\uff08\u4e0d\u4f1a\u53d1\u751f\u5f02\u5e38\uff09\u3002
    \n\u8981\u6307\u51fa\u4e0d\u4f1a\u5f15\u53d1\u5f02\u5e38\uff0c\u8fd8\u53ef\u4ee5\u7528C++11\u4e2d\u7684\u5173\u952e\u5b57noexcept<\/code>\u4ee3\u66ff\u7a7a\u7c7b\u578b\u5217\u8868\u7684\u5f02\u5e38\u89c4\u8303\u3002
    \n\u53e6\u5916\uff0c\u8fd8\u6709\u8fd0\u7b97\u7b26noexcept()<\/code>\uff0c\u53ef\u4ee5\u5224\u65ad\u64cd\u4f5c\u6570\u662f\u5426\u4f1a\u53d1\u751f\u5f02\u5e38\u3002<\/p>\n
    \u539f\u5219\u4e0a\uff0c\u51fd\u6570\u7684\u5f02\u5e38\u89c4\u8303\u5e94\u5305\u542b\u51fd\u6570\u8c03\u7528\u7684\u51fd\u6570\u7684\u5f02\u5e38\u89c4\u8303\u3002<\/p>\n
    8.4 \u5176\u4ed6\u5f02\u5e38\u7279\u5f81<\/h2>\n
    8.4.1 catch \u5757\u4f7f\u7528\u5f15\u7528<\/h3>\n
    \u5f15\u53d1\u5f02\u5e38\u65f6\u7f16\u8bd1\u5668\u603b\u662f\u4f1a\u521b\u5efa\u4e00\u4e2a\u5f02\u5e38\u7684\u4e34\u65f6\u53d8\u91cf\u62f7\u8d1d\u3002\u8fd9\u6837\uff0ccatch<\/code>\u6355\u6349\u5230\u7684\u5f02\u5e38\u53d8\u91cf\u4e0d\u662f\u5f02\u5e38\u53d8\u91cf\u672c\u8eab\u800c\u53ea\u662f\u4e00\u4e2a\u526f\u672c\uff0c\u5373\u4f7f\u4f7f\u7528\u4e86\u5f15\u7528\u3002
    \n\u4f46\u662f\u4f7f\u7528\u5f15\u7528\u8fd8\u6709\u5176\u4ed6\u597d\u5904\uff1a
    \n\u4f7f\u7528\u5f15\u7528\u53ef\u4ee5\u907f\u514d\u521b\u5efa\u53e6\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\uff0c\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5f00\u652f\u3002
    \n\u5982\u679c\u4f7f\u7528\u57fa\u7c7b\u7684\u5f15\u7528\uff0c\u90a3\u4e48\u8fd9\u4e2acatch<\/code>\u5757\u5c31\u8fd8\u53ef\u4ee5\u6355\u6349\u6240\u6709\u6d3e\u751f\u7c7b\u7c7b\u578b\u7684\u5f02\u5e38\u3002\u4e0d\u8fc7\u5982\u679c\u8981\u8fd9\u4e48\u505a\u8981\u5c06\u5904\u4e8e\u7ee7\u627f\u5c42\u6b21\u4e0a\u90e8\u7684\u7c7b\u578b\uff08\u5982\u679c\u60f3\u8981\u7279\u6b8a\u5904\u7406\u7684\u8bdd\uff09\u653e\u5728\u9760\u540e\u7684\u4f4d\u7f6e\u3002<\/p>\n
    8.4.2 \u9ed8\u8ba4\u5f02\u5e38\u5904\u7406\u7a0b\u5e8f<\/h3>\n
    \u5982\u679c\u8981\u6355\u6349\u672a\u77e5\u7c7b\u578b\u7684\u5f02\u5e38\uff0c\u4f7f\u7528\u7c7b\u4f3c\u4ee5\u4e0b\u8fd9\u6837\u7684try<\/code>\u5757\uff1a
    \n\u672a\u786e\u5b9a<\/p>\n
    catch<\/span>(...)\r\n{\r\n    cout<\/span> << \"undetermined error\"<\/span>;\r\n}\r\n<\/code><\/pre>\n
    8.4.3 \u7531\u4e8e\u5f02\u5e38\u800c\u5f15\u53d1\u7684\u95ee\u9898<\/h3>\n
      \n
    1. \u5f02\u5e38\u5728\u5e26\u6709\u5f02\u5e38\u89c4\u8303\u7684\u51fd\u6570<\/em>\u4e2d\u5f15\u53d1\uff0c\u5982\u679c\u5f15\u53d1\u7684\u5f02\u5e38\u4e0d\u80fd\u4e0e\u5f02\u5e38\u89c4\u8303\u4e2d\u7684\u4efb\u4f55\u4e00\u4e2a\u7c7b\u578b\u5339\u914d\uff0c\u5219\u79f0\u8fd9\u4e2a\u5f02\u5e38\u4e3a\u610f\u5916\u5f02\u5e38\uff08unexpected exception\uff09<\/strong>\u3002<\/li>\n
    2. \u5f02\u5e38\u4e0d\u662f\u5728\u51fd\u6570<\/em>\u4e2d\u5f15\u53d1\u7684\u3001\u51fd\u6570\u6ca1\u6709\u5f02\u5e38\u89c4\u8303\u6216\u5f02\u5e38\u7b26\u5408\u5f02\u5e38\u89c4\u8303\uff0c\u8fd9\u65f6\u5f02\u5e38\u5982\u679c\u6ca1\u6709\u88ab\u6355\u6349\uff0c\u5219\u79f0\u8fd9\u4e2a\u5f02\u5e38\u4e3a\u672a\u6355\u6349\u5f02\u5e38\uff08uncaught exception\uff09<\/strong>\u3002<\/li>\n<\/ol>\n
      \u4e0a\u8ff0\u51fd\u6570<\/strong>\u662f\u6307\u4e0ecatch<\/code>\u5757\u5728\u540c\u4e00\u5c42\u53ca\u66f4\u6df1\u5c42\u7684\u51fd\u6570\u8c03\u7528\u3002<\/p>\n
      \u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u610f\u5916\u5f02\u5e38\u548c\u672a\u6355\u6349\u5f02\u5e38\u90fd\u4f1a\u5bfc\u81f4\u5f02\u5e38\u7ec8\u6b62\uff0c\u4f46\u662f\u53ef\u4ee5\u4fee\u6539\u8fd9\u4e00\u884c\u4e3a\u3002
      \n\u7a0b\u5e8f\u5728\u53d1\u73b0\u4ee5\u4e0a\u4e24\u79cd\u5f02\u5e38\u65f6\u5e76\u4e0d\u4f1a\u76f4\u63a5\u7ed3\u675f\u7a0b\u5e8f\uff0c\u800c\u662f\u4f1a\u5206\u522b\u8c03\u7528unexpected()<\/code>\u548cterminate()<\/code>\u51fd\u6570\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cterminate()<\/code>\u51fd\u6570\u90fd\u4f1a\u8c03\u7528abort()<\/code>\u51fd\u6570\uff0c\u800cunexpected()<\/code>\u51fd\u6570\u4f1a\u8c03\u7528terminate()<\/code>\u51fd\u6570\u3002
      \n\u4e24\u4e2a\u51fd\u6570\u58f0\u660e\u5728\u5934\u6587\u4ef6exception<\/code>\u4e2d\u3002\u5934\u6587\u4ef6exception<\/code>\u4e2d\u8fd8\u58f0\u660e\u4e86set_unexpected()<\/code>\u548cset_terminate()<\/code>\u51fd\u6570\uff0c\u4e24\u4e2a\u51fd\u6570\u90fd\u63a5\u53d7\u4e00\u4e2a\u8fd4\u56de\u503c\u7c7b\u578b\u4e3avoid<\/code>\uff0c\u53c2\u6570\u5217\u8868\u4e3a\u7a7a\u7684\u51fd\u6570\u6307\u9488\u4f5c\u4e3a\u53c2\u6570\u3002
      \n\u51fd\u6570\u6307\u9488\u4e5f\u5728exception<\/code>\u5934\u6587\u4ef6\u4e2d\u8fdb\u884c\u4e86\u5b9a\u4e49\uff1a<\/p>\n
      typedef<\/span> void<\/span> (*terminate_handler)<\/span> ()<\/span><\/span>;\r\ntypedef<\/span> void<\/span> (*unexpected_handler)<\/span> ()<\/span><\/span>;\r\n<\/code><\/pre>\n
      \u76f8\u6bd4\u4e8eterminate_handler<\/code>\u51fd\u6570\uff0cunexpected_handler<\/code>\u51fd\u6570\u7684\u884c\u4e3a\u53d7\u5230\u66f4\u4e25\u683c\u7684\u9650\u5236\uff1a<\/p>\n
        \n
      • \u901a\u8fc7\u8c03\u7528abort()<\/code>\u3001exit()<\/code>\u6216terminate()<\/code>\u7ec8\u6b62\u7a0b\u5e8f\u3002<\/li>\n
      • \u4fee\u6539unexpected()<\/code>\uff0c\u5728unexpected()<\/code>\u4e2d\u5f15\u53d1\u5f02\u5e38\u3002\n
          \n
        • \u5f15\u53d1\u7684\u5f02\u5e38\u4e0e\u539f\u6765\u7684\u5f02\u5e38\u89c4\u8303\u5339\u914d\uff0c\u5219\u51fd\u6570\u6309\u666e\u901a\u7684\u65b9\u5f0f\u6b63\u5e38\u8fd0\u884c\uff0c\u5373\u5bfb\u627e\u4e0e\u65b0\u5f02\u5e38\u5339\u914d\u7684catch<\/code>\u5757\u3002<\/li>\n
        • \u5982\u679c\u4e0d\u5339\u914d\uff0c\u4e14\u539f\u6765\u7684\u5f02\u5e38\u89c4\u8303\u4e2d\u6ca1\u6709\u5305\u62ecbad_exception<\/code>\uff0c\u5f02\u5e38\u7a0b\u5e8f\u4f1a\u8c03\u7528terminate()<\/code>\u51fd\u6570\uff0c\u800c\u4e0d\u662f\u518d\u6b21\u8c03\u7528unexpected()<\/code>\u51fd\u6570\u3002<\/li>\n
        • \u5982\u679c\u00b7\u4e0d\u5339\u914d\uff0c\u4f46\u539f\u6765\u7684\u5f02\u5e38\u89c4\u8303\u4e2d\u5305\u62ecbad_exception<\/code>\uff0c\u90a3\u4e48\u4e0d\u5339\u914d\u7684\u5f02\u5e38\u4f1a\u81ea\u52a8\u88abbad_exception<\/code>\u4ee3\u66ff\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
          8.5 exception \u7c7b<\/h2>\n
          \"\"<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
          \u5f02\u5e38<\/th>\n\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n
          std::exception<\/td>\n\u8be5\u5f02\u5e38\u662f\u6240\u6709\u6807\u51c6 C++ \u5f02\u5e38\u7684\u7236\u7c7b\u3002<\/td>\n<\/tr>\n
          std::bad_alloc<\/td>\n\u8be5\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7\u00a0new<\/strong>\u00a0\u629b\u51fa\u3002<\/td>\n<\/tr>\n
          std::bad_cast<\/td>\n\u8be5\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7\u00a0dynamic_cast<\/strong>\u00a0\u629b\u51fa\u3002<\/td>\n<\/tr>\n
          std::bad_exception<\/td>\n\u8fd9\u5728\u5904\u7406 C++ \u7a0b\u5e8f\u4e2d\u65e0\u6cd5\u9884\u671f\u7684\u5f02\u5e38\u65f6\u975e\u5e38\u6709\u7528\u3002<\/td>\n<\/tr>\n
          std::bad_typeid<\/td>\n\u8be5\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7\u00a0typeid<\/strong>\u00a0\u629b\u51fa\u3002<\/td>\n<\/tr>\n
          std::logic_error<\/td>\n\u7406\u8bba\u4e0a\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u4ee3\u7801\u6765\u68c0\u6d4b\u5230\u7684\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::domain_error<\/td>\n\u5f53\u4f7f\u7528\u4e86\u4e00\u4e2a\u65e0\u6548\u7684\u6570\u5b66\u57df\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::invalid_argument<\/td>\n\u5f53\u4f7f\u7528\u4e86\u65e0\u6548\u7684\u53c2\u6570\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::length_error<\/td>\n\u5f53\u521b\u5efa\u4e86\u592a\u957f\u7684\u00a0std::string<\/strong>\u00a0\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::out_of_range<\/td>\n\u8be5\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7\u65b9\u6cd5\u629b\u51fa\uff0c\u4f8b\u5982\u00a0std::vector<\/strong>\u00a0\u548c\u00a0std::bitset<>::operator[]()<\/strong>\u3002<\/td>\n<\/tr>\n
          std::runtime_error<\/td>\n\u7406\u8bba\u4e0a\u4e0d\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u4ee3\u7801\u6765\u68c0\u6d4b\u5230\u7684\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::overflow_error<\/td>\n\u5f53\u53d1\u751f\u6570\u5b66\u4e0a\u6ea2\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::range_error<\/td>\n\u5f53\u5c1d\u8bd5\u5b58\u50a8\u8d85\u51fa\u8303\u56f4\u7684\u503c\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n
          std::underflow_error<\/td>\n\u5f53\u53d1\u751f\u6570\u5b66\u4e0b\u6ea2\u65f6\uff0c\u4f1a\u629b\u51fa\u8be5\u5f02\u5e38\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \u5f02\u5e38\u5177\u6709\u8fd9\u6837\u7684\u4e00\u79cd\u7279\u6027\uff1a\u7c7b\u4f3c\u4e8e\u7c7b\uff0c\u53ef\u4ee5\u6539\u53d8\u4f60\u7684\u7f16\u7a0b\u65b9\u5f0f\u3002<\/p>\n
          exception<\/code>\u5934\u6587\u4ef6\u4e2d\u5b9a\u4e49\u4e86exception<\/code>\u7c7b\uff0c\u7c7b\u4e2d\u6709\u865a\u65b9\u6cd5what()<\/code>\uff08\u9664\u4e86\u6784\u9020\u51fd\u6570\u548c\u6790\u6784\u51fd\u6570\u5916\uff0c\u53ea\u6709\u8fd9\u4e2a\u6210\u5458\uff09\uff0cwhat()<\/code>\u8fd4\u56de\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002
          \n\u56e0\u6b64\u53ef\u4ee5\u4ee5\u5176\u4e3a\u57fa\u7c7b\u6d3e\u751f\u51fa\u62e5\u6709\u7528\u6237\u5b9a\u4e49what()<\/code>\u51fd\u6570\u7684\u6d3e\u751f\u7c7b\u3002<\/p>\n
          \u8fd9\u91cc\u90e8\u5206\u672a\u8bf4\u660e\u7684\u5f02\u5e38\u7c7b\u89c1[\u5176\u4ed6\u5185\u5bb9 1.3.1 RTTI \u7684\u539f\u7406](file:\/\/\/F:\/Documents\/vnote_notebooks\/C++\/C++\u8bed\u8a00\/\u5176\u4ed6\u5185\u5bb9.md#toc_3)\u3002<\/p>\n
          8.5.1 stdexcept \u5f02\u5e38\u7c7b<\/h3>\n
          \u5934\u6587\u4ef6stdexcept<\/code>\u5b9a\u4e49\u4e86\u5176\u4ed6\u51e0\u4e2a\u5f02\u5e38\u7c7b\u3002<\/p>\n
          \u9996\u5148\u4ee5\u516c\u6709\u7ee7\u627f\u7684\u65b9\u5f0f\u4eceexception<\/code>\u6d3e\u751f\u51fa\u4e86logic_error<\/code>\u548cruntime_error<\/code>\u7c7b\u3002
          \n\u8fd9\u4e9b\u7c7b\u7684\u6784\u9020\u51fd\u6570\u63a5\u53d7\u4e00\u4e2astring<\/code>\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570\uff0c\u5176what<\/code>\u51fd\u6570\u63a5\u53d7\u4e00\u4e2aC\u5b57\u7b26\u4e32\u3002
          \nISO C++\u4e3a\u65b0\u7248\u672c\u7684C++\u5b9a\u4e49\u4e86\u4e00\u4e2a\u63a5\u53d7C\u5b57\u7b26\u4e32\u7684\u6784\u9020\u51fd\u6570\u3002
          \n\u53e6\u5916\u7684\u4fe1\u606f\u53ef\u4ee5\u53c2\u8003\u5934\u6587\u4ef6\u3002\u4ee5\u4e0b\u4e3a\u5185\u5bb9\u8282\u9009\uff1a<\/p>\n
          explicit<\/span>\r\n    logic_error<\/span>(const<\/span> string<\/span>& __arg)<\/span> _GLIBCXX_TXN_SAFE<\/span>;\r\n\r\n#if<\/span> __cplusplus >= 201103L<\/span>\r\n    explicit<\/span>\r\n    logic_error<\/span>(const<\/span> char<\/span>*)<\/span> _GLIBCXX_TXN_SAFE<\/span>;\r\n#endif<\/span><\/span>\r\n\r\n#if<\/span> _GLIBCXX_USE_CXX11_ABI || _GLIBCXX_DEFINE_STDEXCEPT_COPY_OPS<\/span>\r\n    logic_error(const<\/span> logic_error&) _GLIBCXX_USE_NOEXCEPT;\r\n    logic_error& operator<\/span>=(const<\/span> logic_error&) _GLIBCXX_USE_NOEXCEPT;\r\n#endif<\/span><\/span>\r\n\/\/ ...<\/span>\r\nvirtual<\/span> const<\/span> char<\/span>*\r\n    what<\/span>()<\/span> const<\/span> _GLIBCXX_TXN_SAFE_DYN _GLIBCXX_USE_NOEXCEPT<\/span>;\r\n<\/code><\/pre>\n
          logic_error<\/code>\u53c8\u6d3e\u751f\u51fa\u4e86\u66f4\u5177\u4f53\u7684\u5f02\u5e38\u7c7b\uff1a<\/p>\n
            \n
          1. domain_error<\/code>\uff1a\u5efa\u8bae\u7528\u6765\u5904\u7406\u6570\u5b66\u7684\u5b9a\u4e49\u57df\u95ee\u9898\u3002<\/li>\n
          2. invalid_argument<\/code>\uff1a\u5efa\u8bae\u7528\u6765\u5904\u7406\u51fd\u6570\u53c2\u6570\u95ee\u9898\uff08\u5185\u5bb9\u95ee\u9898\uff09\u3002<\/li>\n
          3. length_error<\/code>\uff1a\u5efa\u8bae\u7528\u6765\u5904\u7406\u6570\u7ec4\u3001\u52a8\u6001\u5206\u914d\u7684\u5185\u5b58\u7b49\u957f\u5ea6\u4e0d\u8db3\u7684\u95ee\u9898\u3002<\/li>\n
          4. out_of_range<\/code>\uff1a\u5efa\u8bae\u7528\u6765\u5904\u7406\u7d22\u5f15\u8d85\u51fa\u8303\u56f4\u7684\u95ee\u9898\u3002<\/li>\n<\/ol>\n
            runtime_error<\/code>\u6d3e\u751f\u51fa\u4e86\u4ee5\u4e0b\u5f02\u5e38\u7c7b\uff1a<\/p>\n
              \n
            1. range_error<\/code>\uff1a\u8ba1\u7b97\u7ed3\u679c\u53ef\u80fd\u4e0d\u5728\u51fd\u6570\u5141\u8bb8\u7684\u8303\u56f4\u5185\u4f46\u6ca1\u6709\u53d1\u751f\u4e0a\u6ea2<\/strong>\u6216\u4e0b\u6ea2<\/strong>\u3002<\/li>\n
            2. overflow_error<\/code>\uff1a\u53d1\u751f\u5728\u6d6e\u70b9\u6570\u8ba1\u7b97\u4e2d\uff0c\u4e00\u822c\u6765\u8bf4\uff0c\u5b58\u5728\u6d6e\u70b9\u7c7b\u578b\u53ef\u4ee5\u8868\u793a\u7684\u6700\u5927\uff08\u7edd\u5bf9\u503c\uff09\u975e\u96f6\u503c\uff0c\u5982\u679c\u8ba1\u7b97\u7ed3\u679c\u6bd4\u8fd9\u4e2a\u503c\u8fd8\u5927\u7684\u8bdd\u4f1a\u53d1\u751f\u4e0b\u6ea2<\/strong>\u3002<\/li>\n
            3. underflow_error<\/code>\uff1a\u53d1\u751f\u5728\u6d6e\u70b9\u6570\u8ba1\u7b97\u4e2d\uff0c\u4e00\u822c\u6765\u8bf4\uff0c\u5b58\u5728\u6d6e\u70b9\u7c7b\u578b\u53ef\u4ee5\u8868\u793a\u7684\u6700\u5c0f\uff08\u7edd\u5bf9\u503c\uff09\u975e\u96f6\u503c\uff0c\u5982\u679c\u8ba1\u7b97\u7ed3\u679c\u6bd4\u8fd9\u4e2a\u503c\u8fd8\u5c0f\u7684\u8bdd\u4f1a\u53d1\u751f\u4e0b\u6ea2<\/strong>\u3002<\/li>\n<\/ol>\n
              8.5.2 bad_alloc \u5f02\u5e38\u548c new<\/h3>\n
              \u5728\u4ee5\u524d\uff0cnew<\/code>\u8bf7\u6c42\u5185\u5b58\u51fa\u9519\uff08\u901a\u5e38\u662f\u5185\u5b58\u4e0d\u8db3\uff09\u65f6\uff0cnew<\/code>\u8fd4\u56de\u4e00\u4e2a\u7a7a\u6307\u9488nullptr<\/code>\u3002
              \n\u4f46\u73b0\u5728\uff0cnew<\/code>\u4f1a\u5f15\u53d1bad_alloc<\/code>\u5f02\u5e38\u3002bad_alloc<\/code>\u5f02\u5e38\u548cnothrow<\/code>\u90fd\u5b9a\u4e49\u5728\u5934\u6587\u4ef6new<\/code>\u4e2d\u3002
              \n\u53e6\u5916\uff0c\u5728\u5934\u6587\u4ef6new<\/code>\u4e2d\u8fd8\u5b9a\u4e49\u4e86bad_array_new_length<\/code>\u5f02\u5e38\u7c7b\u578b\u3002<\/p>\n
              \u4e3a\u4e86\u5c3d\u91cf\u5411\u4e0b\u517c\u5bb9\uff0cC++\u63d0\u4f9b\u4e86\u8fd4\u56de\u7a7a\u6307\u9488\u7684new<\/code>\uff1a<\/p>\n
              int<\/span> * pi = new<\/span> (nothrow) int<\/span>;\r\nint<\/span> * pi = new<\/span> (nothrow) int<\/span>[500<\/span>];\r\n<\/code><\/pre>\n
              8.6 \u6709\u5173\u5f02\u5e38\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n
                \n
              1. \u5e94\u8be5\u5728\u8bbe\u8ba1\u7a0b\u5e8f\u65f6\u5c31\u52a0\u5165\u5f02\u5e38\u5904\u7406\u529f\u80fd\uff0c\u800c\u4e0d\u662f\u4ee5\u540e\u518d\u6dfb\u52a0\u3002<\/li>\n
              2. \u5f02\u5e38\u89c4\u8303\u4e0d\u9002\u7528\u4e8e\u6a21\u677f\uff0c\u56e0\u4e3a\u6a21\u677f\u51fd\u6570\u5f15\u53d1\u7684\u5f02\u5e38\u53ef\u80fd\u968f\u7279\u5b9a\u7684\u5177\u4f53\u5316\u800c\u5f02\u3002<\/li>\n
              3. \u5f02\u5e38\u548c\u52a8\u6001\u5185\u5b58\u5206\u914d\u5e76\u975e\u603b\u80fd\u534f\u8c03\u5de5\u4f5c\u3002<\/li>\n<\/ol>\n
                \u5bf9\u4e8e\u7b2c\u4e09\u70b9\uff0c\u4e00\u822c\u6709\u4e24\u79cd\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n
                  \n
                1. \u5728catch<\/code>\u5757\u4e2d\u6dfb\u52a0\u76f8\u5e94\u5730delete<\/code>\u8bed\u53e5\u3002<\/li>\n
                2. \u4f7f\u7528\u667a\u80fd\u6307\u9488\u53d6\u4ee3\u666e\u901a\u6307\u9488\u6765\u7ba1\u7406\u52a8\u6001\u5206\u914d\u7684\u5185\u5b58\u3002<\/li>\n<\/ol>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
                  \u539f\u6587\u5730\u5740   8.1 \u57fa\u672c\u7528\u6cd5<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[119],"class_list":["post-4217","post","type-post","status-publish","format-standard","hentry","tag-03-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4217","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4217"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4217\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4217"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4217"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4217"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}