{"id":45550,"date":"2023-06-16T06:34:24","date_gmt":"2023-12-15T23:13:20","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45550-2\/"},"modified":"2024-04-30T09:07:47","modified_gmt":"2024-04-30T01:07:47","slug":"45550-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45550-2\/","title":{"rendered":""},"content":{"rendered":"

\u81ea\u5df1\u7d39\u4ecb<\/h1>\n

\u51fa\u7530 \u5b88\u3068\u7533\u3057\u307e\u3059\u3002
\n\u3057\u304c\u306a\u3044Python\u30d7\u30ed\u30b0\u30e9\u30de\u3067\u3059\u3002
\n\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u8208\u5473\u304c\u3042\u308a\u73fe\u5728\u52c9\u5f37\u4e2d\u3067\u3059\u3002CTF\u3084\u30d0\u30b0\u30d0\u30a6\u30f3\u30c6\u30a3\u306a\u3069\u3067\u8155\u3092\u78e8\u3044\u3066\u3044\u307e\u3059\u3002\u4e3b\u306b\u4f4e\u30ec\u30a4\u30e4\u306e\u6280\u8853\u304c\u597d\u304d\u3067\u3001\u305d\u3063\u3061\u3070\u304b\u308a\u76ee\u304c\u884c\u304d\u304c\u3061\u3067\u3059\u3002<\/p>\n

Rust\u3092\u52c9\u5f37\u3057\u3066\u3044\u304f\u3046\u3048\u3067\u3001\u8aad\u3093\u3067\u5b66\u3073\u3001\u624b\u3092\u52d5\u304b\u3057\u3001\u8a18\u9332\u3057\u3001\u697d\u3057\u304f\u5b66\u3093\u3067\u3044\u3051\u305f\u3089\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n

\u74b0\u5883<\/h1>\n

\u65b0\u3057\u3044\u8a00\u8a9e\u3092\u5b66\u3076\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u666e\u6bb5\u4f7f\u308f\u306a\u3044Windows\u3068Vim\u3068\u3044\u3046\u65b0\u3057\u3044\u958b\u767a\u74b0\u5883\u3067\u884c\u3063\u3066\u3044\u307e\u3059\u3002
\nOS: Windows10 Home 64bit 1903
\nCPU: Intel Core i5-3470 @ 3.20GHz
\nRust: 1.39.0
\nRAM: 8.00GB
\nEditor: Vim 8.1.1
\nTerminal: PowerShell<\/p>\n

\u524d\u56de<\/h1>\n

\u524d\u56de\u306f\u4e26\u5217\u51e6\u7406\u306b\u3064\u3044\u3066\u5b66\u3073\u307e\u3057\u305f\u3002
\nRust\u52c9\u5f37\u4e2d – \u305d\u306e27<\/p>\n

unsafe<\/h1>\n

Rust\u306b\u306funsafe\u3068\u547c\u3070\u308c\u308b\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u306f\u30d7\u30ed\u30b0\u30e9\u30de\u306b\u3082\u5b89\u5168\u306e\u8cac\u4efb\u3092\u8ca0\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

unsafe\u30d6\u30ed\u30c3\u30af<\/h2>\n

unsafe\u30d6\u30ed\u30c3\u30af\u3092\u5ba3\u8a00\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5358\u306b\u30d6\u30ed\u30c3\u30af\u306e\u524d\u306bunsafe\u3068\u66f8\u304d\u307e\u3059\u3002<\/p>\n

unsafe<\/span> {<\/span>\r\n    ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
unsafe\u30d6\u30ed\u30c3\u30af\u5185\u3067\u306f\u4ee5\u4e0b\u306e\u8ffd\u52a0\u6a5f\u80fd\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
    \n
  • \n
      unsafe\u95a2\u6570\u306e\u4f7f\u7528<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          raw\u30dd\u30a4\u30f3\u30bf\u306e\u53c2\u7167\u89e3\u6c7a<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              \u53ef\u5909\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                \u4ed6\u8a00\u8a9e\u306e\u95a2\u6570\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/ul>\n
                \u4ee5\u4e0b\u306f\u30d9\u30af\u30bf\u306eunsafe\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3059\u308b\u4f8b\u3067\u3059\u3002<\/p>\n
                fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>];<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> v<\/span>.get_unchecked<\/span>(<\/span>2<\/span>));<\/span> \/\/ 0x2<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                get_unchecked\u306f\u5883\u754c\u3092\u78ba\u8a8d\u305b\u305a\u306b\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u7bc4\u56f2\u5916\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3082\u8a31\u3057\u307e\u3059\u3002<\/p>\n
                fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>];<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> v<\/span>.get_unchecked<\/span>(<\/span>4<\/span>));<\/span> \/\/ read out of bound value, but not error<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u306a\u306e\u3067\u79c1\u306e\u74b0\u5883\u3067\u306f\u305f\u3044\u3066\u30440x0\u3092\u51fa\u529b\u3057\u307e\u3059\u304c\u30015\u56de\u306b1\u56de\u304f\u3089\u3044\u306f\u30010x0\u3067\u306a\u3044\u5024\u3082\u8fd4\u3057\u307e\u3059\u3002\u304a\u305d\u3089\u304f\u3001\u30e1\u30e2\u30ea\u306b\u8a18\u61b6\u3055\u308c\u305f\u4f55\u3089\u304b\u306e\u5024\u306a\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
                unsafe\u95a2\u6570<\/h2>\n
                unsafe\u95a2\u6570\u306f\u3001\u901a\u5e38\u306e\u95a2\u6570\u306bunsafe\u3068\u4ed8\u3051\u308b\u3053\u3068\u3067\u5ba3\u8a00\u3057\u307e\u3059\u3002<\/p>\n
                unsafe<\/span> fn<\/span> f<\/span>(<\/span>...<\/span>)<\/span> {<\/span>\r\n    ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u5b9a\u7fa9\u3057\u305funsafe\u95a2\u6570\u306funsafe\u30b3\u30fc\u30c9\u5185\u3067\u3057\u304b\u547c\u3079\u307e\u305b\u3093\u3002
                \n\u4ee5\u4e0b\u306bunsafe\u95a2\u6570\u306e\u5b9a\u7fa9\u3068\u4f7f\u7528\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
                unsafe<\/span> fn<\/span> unsafe_get_mut<\/span>(<\/span>v<\/span>:<\/span> &<\/span>mut<\/span> Vec<\/span><<\/span>i32<\/span>><\/span>,<\/span> idx<\/span>:<\/span> usize<\/span>)<\/span> -><\/span> &<\/span>mut<\/span> i32<\/span> {<\/span>\r\n    v<\/span>.get_unchecked_mut<\/span>(<\/span>idx<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>];<\/span>\r\n    let<\/span> i<\/span>;<\/span>\r\n    let<\/span> idx<\/span> =<\/span> 2<\/span>;<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        ...<\/span>\r\n        i<\/span> =<\/span> unsafe_get_mut<\/span>(<\/span>&<\/span>mut<\/span> v<\/span>,<\/span> idx<\/span>);<\/span>\r\n    }<\/span>\r\n    println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> i<\/span>);<\/span> \/\/ 0x2<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u6ce8\u610f\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u306f\u3001\u672a\u5b9a\u7fa9\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u306e\u306f\u3001unsafe\u30b3\u30fc\u30c9\u4e2d\u3060\u3051\u3068\u306f\u9650\u3089\u305a\u3001unsafe\u30b3\u30fc\u30c9\u3092\u4f7f\u3063\u3066\u3044\u308b\u30b3\u30fc\u30c9\u5168\u4f53\u3067\u672a\u5b9a\u7fa9\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u5148\u307b\u3069\u306e\u30b3\u30fc\u30c9\u3092\u5c11\u3057\u5909\u3048\u3066\u307f\u307e\u3059(\u610f\u56f3\u901a\u308a\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u304c\u30fb\u30fb\u30fb)\u3002<\/p>\n
                unsafe<\/span> fn<\/span> unsafe_get_mut<\/span>(<\/span>v<\/span>:<\/span> &<\/span>mut<\/span> Vec<\/span><<\/span>i32<\/span>><\/span>,<\/span> idx<\/span>:<\/span> usize<\/span>)<\/span> -><\/span> &<\/span>mut<\/span> i32<\/span> {<\/span>\r\n    v<\/span>.get_unchecked_mut<\/span>(<\/span>idx<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>];<\/span>\r\n    let<\/span> i<\/span>;<\/span>\r\n    let<\/span> idx<\/span> =<\/span> 2<\/span>;<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        i<\/span> =<\/span> unsafe_get_mut<\/span>(<\/span>&<\/span>mut<\/span> v<\/span>,<\/span> idx<\/span>);<\/span>\r\n    }<\/span>\r\n    println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> i<\/span>);<\/span> \/\/ 0x2<\/span>\r\n    *<\/span>i<\/span> =<\/span> 0x0<\/span>;<\/span>    \/\/ value overwrite!<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> v<\/span>.get_unchecked<\/span>(<\/span>idx<\/span>));<\/span> \/\/ get element at idx<\/span>\r\n    }<\/span>\r\n    println!<\/span>(<\/span>\"{:?}\"<\/span>,<\/span> v<\/span>);<\/span> \/\/ [0, 1, 0]<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u4e00\u3064\u76ee\u306eunsafe\u30d6\u30ed\u30c3\u30af\u3067\u5909\u6570i\u306b\u5909\u6570idx\u3067\u6307\u5b9a\u3057\u305f\u30d9\u30af\u30bf\u306e\u8981\u7d202\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u683c\u7d0d\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u5909\u6570i\u3092\u53c2\u7167\u89e3\u6c7a\u30570x0\u3092\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002
                \n\u3059\u308b\u3068\u3001\u30d9\u30af\u30bf\u306e\u8981\u7d202\u306f\u5f53\u71360\u306b\u66f8\u304d\u63db\u308f\u308a\u307e\u3059\u3002
                \n\u6b21\u306b\u5909\u6570idx\u3092\u7bc4\u56f2\u5916\u306e4\u3068\u3057\u3066\u6307\u5b9a\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
                unsafe<\/span> fn<\/span> unsafe_get_mut<\/span>(<\/span>v<\/span>:<\/span> &<\/span>mut<\/span> Vec<\/span><<\/span>i32<\/span>><\/span>,<\/span> idx<\/span>:<\/span> usize<\/span>)<\/span> -><\/span> &<\/span>mut<\/span> i32<\/span> {<\/span>\r\n    v<\/span>.get_unchecked_mut<\/span>(<\/span>idx<\/span>)<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    let<\/span> mut<\/span> v<\/span> =<\/span> vec!<\/span>[<\/span>0<\/span>,<\/span> 1<\/span>,<\/span> 2<\/span>];<\/span>\r\n    let<\/span> i<\/span>;<\/span>\r\n    let<\/span> idx<\/span> =<\/span> 4<\/span>;<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        i<\/span> =<\/span> unsafe_get_mut<\/span>(<\/span>&<\/span>mut<\/span> v<\/span>,<\/span> idx<\/span>);<\/span> \/\/ read out of bound value<\/span>\r\n    }<\/span>\r\n    println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> i<\/span>);<\/span>\r\n    *<\/span>i<\/span> =<\/span> 0x0<\/span>;<\/span>    \/\/ value overwrite!<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:#x}\"<\/span>,<\/span> v<\/span>.get_unchecked<\/span>(<\/span>idx<\/span>));<\/span> \/\/ get element at idx<\/span>\r\n    }<\/span>\r\n    println!<\/span>(<\/span>\"{:?}\"<\/span>,<\/span> v<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                0x45325a6e\r\n0x0\r\n[0, 1, 2]\r\n<\/code><\/pre>\n
                \u4e00\u884c\u76ee\u306e\u51fa\u529b\u306f\u3001\u5909\u6570i\u3092\u4e0a\u66f8\u304d\u3059\u308b\u524d\u3067\u3059\u3002\u4e8c\u884c\u76ee\u306f\u4e0a\u66f8\u304d\u5f8c\u306b\u518d\u3073\u7bc4\u56f2\u5916\u30a2\u30af\u30bb\u30b9\u3057\u305f\u969b\u306e\u5024\u3067\u3059\u30020x0\u306b\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001unsafe\u30b3\u30fc\u30c9\u4e2d\u3067\u306a\u3044\u3068\u3053\u308d\u3067\u30a2\u30c9\u30ec\u30b9\u306e\u5024\u3092\u66f8\u304d\u63db\u3048\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4eca\u56de\u306e\u5834\u5408\u3001\u5909\u6570idx\u306f\u30cf\u30fc\u30c9\u30b3\u30fc\u30c9\u3067\u3059\u304c\u3001\u4f55\u3089\u304b\u306e\u51e6\u7406\u3092\u3057\u305f\u7d50\u679c\u3067\u3042\u3063\u305f\u5834\u5408\u77e5\u3089\u305a\u77e5\u3089\u305a\u306e\u3046\u3061\u306b\u7bc4\u56f2\u5916\u306e\u30c7\u30fc\u30bf\u3078\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002
                \nunsafe\u30b3\u30fc\u30c9\u306f\u672a\u5b9a\u7fa9\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3055\u306a\u3044\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3067\u306a\u3051\u308c\u3070\u3044\u3051\u307e\u305b\u3093\u3002<\/p>\n
                unsafe\u30c8\u30ec\u30a4\u30c8<\/h2>\n
                \u30c8\u30ec\u30a4\u30c8\u306b\u3082unsafe\u3092\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                unsafe<\/span> trait<\/span> TraitName<\/span> {<\/span>\r\n    ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u8aac\u660e\u306f\u7701\u7565\u3057\u307e\u3059\u3002
                \n\u305f\u3060\u4e00\u70b9\u3001unsafe\u30c8\u30ec\u30a4\u30c8\u3092\u8aa4\u3063\u3066\u5b9f\u88c5\u3057\u3066\u3057\u307e\u3046\u3068\u3001\u305d\u306e\u578b\u3092\u6307\u5b9a\u3057\u305f\u95a2\u6570\u304c\u672a\u5b9a\u7fa9\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u306b\u306f\u6ce8\u610f\u3067\u3059\u3002<\/p>\n
                raw\u30dd\u30a4\u30f3\u30bf<\/h2>\n
                raw\u30dd\u30a4\u30f3\u30bf\u306f\u3001\u901a\u5e38\u306e\u30dd\u30a4\u30f3\u30bf\u306b\u6bd4\u3079\u3066\u5236\u7d04\u304c\u7121\u3044\u30dd\u30a4\u30f3\u30bf\u3067\u3059\u3002raw\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u3048\u3070\u901a\u5e38\u306e\u30dd\u30a4\u30f3\u30bf\u3067\u306f\u5b9f\u73fe\u3057\u306b\u304f\u3044\u30b0\u30e9\u30d5\u69cb\u9020\u306a\u3069\u3092\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
                *const T\u3068*mut T<\/h3>\n
                raw\u30dd\u30a4\u30f3\u30bf\u306b\u306f2\u7a2e\u985e\u3042\u308a\u307e\u3059\u3002<\/p>\n
                \n
                raw\u30dd\u30a4\u30f3\u30bf\u30e2\u30fc\u30c9*const T\u8aad\u8fbc\u307f*mut T\u8aad\u66f8\u304d<\/div>\n<\/div>\n
                \u305d\u308c\u305e\u308c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u53c2\u7167\u304b\u3089\u5909\u63db\u3057\u3066\u4f5c\u308a\u307e\u3059\u3002<\/p>\n
                &<\/span>T<\/span> as<\/span> *<\/span>const<\/span> T<\/span>;<\/span>\r\n<\/code><\/pre>\n
                &<\/span>mut<\/span> T<\/span> as<\/span> *<\/span>mut<\/span> T<\/span>;<\/span>\r\n<\/code><\/pre>\n
                \u4ee5\u4e0b\u306b\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
                fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    ...<\/span>\r\n    \/\/ raw pointer<\/span>\r\n    \/\/ *const T<\/span>\r\n    let<\/span> x<\/span>  =<\/span> 10_i32<\/span>;<\/span>\r\n    let<\/span> rx<\/span> =<\/span> &<\/span>x<\/span> as<\/span> *<\/span>const<\/span> i32<\/span>;<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:?} {} {}\"<\/span>,<\/span> rx<\/span>,<\/span> *<\/span>rx<\/span>,<\/span> get_type<\/span>(<\/span>rx<\/span>));<\/span>\r\n    }<\/span>\r\n    \/\/ *mut T<\/span>\r\n    let<\/span> mut<\/span> y<\/span> =<\/span> 20_i32<\/span>;<\/span>\r\n    let<\/span> ry<\/span> =<\/span> &<\/span>mut<\/span> y<\/span> as<\/span> *<\/span>mut<\/span> i32<\/span>;<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{:?} {} {}\"<\/span>,<\/span> ry<\/span>,<\/span> *<\/span>ry<\/span>,<\/span> get_type<\/span>(<\/span>ry<\/span>));<\/span>\r\n        *<\/span>ry<\/span> =<\/span> *<\/span>rx<\/span>;<\/span>\r\n        println!<\/span>(<\/span>\"{:?} {} {}\"<\/span>,<\/span> ry<\/span>,<\/span> *<\/span>ry<\/span>,<\/span> get_type<\/span>(<\/span>ry<\/span>));<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                0xf73af1f6cc 10 *const i32\r\n0xf73af1f77c 20 *mut i32\r\n0xf73af1f77c 10 *mut i32\r\n<\/code><\/pre>\n
                raw\u30dd\u30a4\u30f3\u30bf\u306e\u53c2\u7167\u89e3\u6c7a\u306funsafe\u5185\u3067\u3057\u304b\u884c\u3048\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u53c2\u7167\u89e3\u6c7a\u306f\u660e\u793a\u7684\u306b\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
                \nraw\u30dd\u30a4\u30f3\u30bf\u540c\u58eb\u306e\u6bd4\u8f03\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u540c\u58eb\u306e\u6bd4\u8f03\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
                std::ptr::null<\/h3>\n
                raw\u30dd\u30a4\u30f3\u30bf\u306fnull\u3092\u6301\u3064\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002
                \nnull\u306e\u5b9a\u7fa9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
                pub<\/span> const<\/span> fn<\/span> null<\/span><<\/span>T<\/span>><\/span>()<\/span> -><\/span> *<\/span>const<\/span> T<\/span> {<\/span> 0<\/span> as<\/span> *<\/span>const<\/span> T<\/span> }<\/span>\r\n<\/code><\/pre>\n
                fn<\/span> main<\/span>()<\/span> {<\/span>\r\n    ...<\/span>\r\n    \/\/ null<\/span>\r\n    let<\/span> rnull<\/span>:<\/span> *<\/span>const<\/span> i32<\/span> =<\/span> std<\/span>::<\/span>ptr<\/span>::<\/span>null<\/span>();<\/span>\r\n    println!<\/span>(<\/span>\"{:?}\"<\/span>,<\/span> rnull<\/span>);<\/span> \/\/ 0x0<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                FFI(Foreign Function Interface)<\/h2>\n
                Rust\u306f\u4ed6\u8a00\u8a9e\u306e\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u4ed6\u8a00\u8a9e\u304b\u3089Rust\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
                \n\u4eca\u56de\u306fCC\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u3063\u3066\u3001C\u8a00\u8a9e\u3067\u66f8\u304b\u308c\u305f\u95a2\u6570\u3092Rust\u3067\u547c\u3073\u51fa\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
                C\u306e\u30d7\u30ed\u30b0\u30e9\u30e0<\/h3>\n
                #include <stdio.h>\r\n<\/span>\r\nvoid<\/span> hello<\/span>()<\/span> {<\/span>\r\n    printf<\/span>(<\/span>\"Hello, C!<\/span>\\n<\/span>\"<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u3053\u306ehello\u95a2\u6570\u3092Rust\u304b\u3089\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n
                extern\u30d6\u30ed\u30c3\u30af<\/h3>\n
                extern\u30d6\u30ed\u30c3\u30af\u306f\u3001Rust\u306b\u30ea\u30f3\u30af\u3055\u308c\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u4e2d\u306e\u95a2\u6570\u3084\u5909\u6570\u3092\u5ba3\u8a00\u3059\u308b\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
                extern<\/span> {<\/span>\r\n    ...<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u4f8b\u3048\u3070\u3001Rust\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u5fc5\u305aC\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u30ea\u30f3\u30af\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u306e\u95a2\u6570\u3092Rust\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u5ba3\u8a00\u3057\u3066\u3042\u3052\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
                use<\/span> std<\/span>::<\/span>os<\/span>::<\/span>raw<\/span>::<\/span>c_int<\/span>;<\/span>\r\nextern<\/span> {<\/span>\r\n    fn<\/span> abs<\/span>(<\/span>n<\/span>:<\/span> c_int<\/span>)<\/span> -><\/span> c_int<\/span>;<\/span>\r\n}<\/span>\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        println!<\/span>(<\/span>\"{}\"<\/span>,<\/span> abs<\/span>(<\/span>-<\/span>1<\/span>));<\/span> \/\/ 1<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u3053\u3053\u3067\u3001std::os::raw\u306f\u3001C\u306b\u5bfe\u5fdc\u3059\u308bRust\u306e\u578b\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e0a\u8a18\u306fabs\u95a2\u6570\u3092\u5ba3\u8a00\u3057\u307e\u3057\u305f\u3002\u4ed6\u8a00\u8a9e\u306e\u95a2\u6570\u306funsafe\u30b3\u30fc\u30c9\u4e2d\u3067\u306e\u307f\u547c\u3073\u51fa\u305b\u307e\u3059\u3002<\/p>\n
                extern\u30d6\u30ed\u30c3\u30af\u306e\u4e0a\u306b#[link(…)]\u5c5e\u6027\u3092\u4ed8\u3051\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u95a2\u6570\u3092\u5ba3\u8a00\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u56de\u306fhello\u30e9\u30a4\u30d6\u30e9\u30ea\u306ehello\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u305f\u3044\u306e\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
                #[link(name=<\/span>\"hello\"<\/span>)]<\/span>\r\nextern<\/span> {<\/span>\r\n    fn<\/span> hello<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                name=”hello”\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u540d\u524d\u3067\u3059\u3002<\/p>\n
                cc\u30af\u30ec\u30fc\u30c8<\/h3>\n
                CC\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u3046\u3053\u3068\u3067\u7c21\u5358\u306b\u4ed6\u8a00\u8a9e\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
                \n(\u3068\u3044\u3046\u3088\u308a\u4f59\u8ac7\u3067\u3059\u304c\u3001Windows\u74b0\u5883\u306a\u306e\u3067cl.exe\u3068lib.exe\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u8a66\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u30a8\u30e9\u30fc\u3092\u5410\u3044\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u30a8\u30e9\u30fc\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u305f\u3044\u306e\u3067\u3059\u304c\u3001powershell\u306e\u305b\u3044\u304b\u4f55\u306a\u306e\u304b\u5206\u304b\u308a\u307e\u305b\u3093\u304c\u3001\u3059\u3079\u3066\u6587\u5b57\u5316\u3051\u3055\u308c\u3066\u3057\u307e\u3044\u3046\u307e\u304f\u3044\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3069\u3046\u3082\u30b9\u30c3\u30c8\u30b3\u30c9\u30c3\u30b3\u30a4\u306a\u72b6\u6cc1\u3060\u3063\u305f\u306e\u3067\u4eca\u56de\u306fcc\u30af\u30ec\u30fc\u30c8\u306b\u983c\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002)<\/p>\n
                build.rs<\/h3>\n
                [package]<\/span>\r\n...<\/span>\r\nbuild<\/span> =<\/span> \"build.rs\"<\/span>\r\n\r\n[build-dependencies]<\/span>\r\ncc<\/span> =<\/span> \"1.0\"<\/span>\r\n<\/code><\/pre>\n
                build = “build.rs”\u306fCargo\u304c\u30d3\u30eb\u30c9\u3059\u308b\u969b\u306b\u7528\u3044\u308b\u30d3\u30eb\u30c9\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u30d3\u30eb\u30c9\u30b9\u30af\u30ea\u30d7\u30c8\u306fCargo.toml\u3068\u540c\u3058\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u914d\u7f6e\u3057\u307e\u3059\u3002\u3044\u308d\u3093\u306a\u3053\u3068\u304c\u3067\u304d\u308b\u3089\u3057\u3044\u3067\u3059\u304c(\u4e0b\u306e\u53c2\u7167\u3092\u53c2\u7167\uff01)\u3001\u4eca\u56de\u306fcc\u30af\u30ec\u30fc\u30c8\u3092\u4f7f\u3063\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u51e6\u7406\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n
                \u53c2\u7167:
                \ndocument – Build Scripts<\/p>\n
                extern<\/span> crate<\/span> cc<\/span>;<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    cc<\/span>::<\/span>Build<\/span>::<\/span>new<\/span>()<\/span>\r\n        .file<\/span>(<\/span>\"hello.c\"<\/span>)<\/span>\r\n        .compile<\/span>(<\/span>\"hello\"<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                \u3053\u308c\u3067\u6e96\u5099\u306f\u6574\u3063\u305f\u306e\u3067hello\u95a2\u6570\u3092\u547c\u3073\u51fa\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
                #[link(name=<\/span>\"hello\"<\/span>)]<\/span>\r\nextern<\/span> {<\/span>\r\n    fn<\/span> hello<\/span>();<\/span>\r\n}<\/span>\r\n\r\nfn<\/span> main<\/span>()<\/span> {<\/span>\r\n    unsafe<\/span> {<\/span>\r\n        hello<\/span>();<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                $ cargo run\r\n    Compiling ffi v0.1.0 (C:\\Users\\deta\\hack\\rust\\ffi)\r\n     Finished dev [unoptimized + debuginfo] target(s) in 1.12s\r\n      Running `target\\debug\\ffi.exe`\r\nHello, C!\r\n<\/code><\/pre>\n
                \u3053\u3053\u3067\u3072\u3068\u307e\u305a\u30fb\u30fb\u30fb<\/h1>\n
                \u4eca\u56de\u3067Rust\u52c9\u5f37\u4e2d\u30b7\u30ea\u30fc\u30ba\u306f\u7d42\u308f\u308a\u3067\u3059\u3002
                \n\u74b0\u5883\u69cb\u7bc9\u304b\u3089\u3053\u3053\u307e\u3067\u306fRust\u306e\u307b\u3093\u306e\u4e00\u90e8\u306b\u3059\u304e\u306a\u3044\u3068\u601d\u3044\u307e\u3059\u3002\u305f\u3060\u305f\u3060\u57fa\u672c\u7684\u306aRust\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3060\u3051\u3067\u3059\u3002\u3053\u3053\u304b\u3089\u3001Rust\u3092\u4f7f\u3063\u3066\u4f5c\u308a\u305f\u3044\u3082\u306e\u3092\u30ac\u30f3\u30ac\u30f3\u4f5c\u3063\u3066\u3044\u3051\u307e\u3059\uff01
                \n\u6700\u521d\u306e\u65b9\u306b\u3082\u66f8\u304d\u307e\u3057\u305f\u304c\u3001Rust\u3092\u52c9\u5f37\u3057\u3066\u3044\u308b\u3068\u5b89\u5168\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u308b\u305f\u3081\u306e\u8003\u3048\u65b9\u306a\u3069\u3082\u540c\u6642\u306b\u5b66\u3079\u308b\u305f\u3081\u3001Rust\u3060\u3051\u3067\u306a\u304f\u307b\u304b\u306e\u8a00\u8a9e\u3092\u4f7f\u3046\u969b\u3082\u5fdc\u7528\u3067\u304d\u307e\u3059\u3088\u306d\u3002\u3042\u3068\u3001\u3084\u3063\u3066\u3066\u697d\u3057\u3044\u3067\u3059\u306d\u3002\u4f7f\u3063\u3066\u3044\u306a\u3044\u7b4b\u8089\u304c\u523a\u6fc0\u3055\u308c\u308b\u3088\u3046\u3067\u3002\u7b11
                \n\u3053\u308c\u304b\u3089\u306f\u3001Rust\u3092\u4e00\u3064\u306e\u4e3b\u6b66\u5668\u3068\u3057\u3066\u4f7f\u3063\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002Rust\u3055\u3093\u3001\u3053\u308c\u304b\u3089\u3082\u3088\u308d\u3057\u304f\u304a\u9858\u3044\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                \u81ea\u5df1\u7d39\u4ecb \u51fa\u7530 \u5b88\u3068\u7533\u3057\u307e\u3059\u3002 \u3057\u304c\u306a\u3044Python\u30d7\u30ed\u30b0\u30e9\u30de\u3067\u3059\u3002 \u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u8208\u5473\u304c\u3042\u308a\u73fe\u5728\u52c9\u5f37\u4e2d\u3067 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45550","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45550-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u81ea\u5df1\u7d39\u4ecb \u51fa\u7530 \u5b88\u3068\u7533\u3057\u307e\u3059\u3002 \u3057\u304c\u306a\u3044Python\u30d7\u30ed\u30b0\u30e9\u30de\u3067\u3059\u3002 \u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u8208\u5473\u304c\u3042\u308a\u73fe\u5728\u52c9\u5f37\u4e2d\u3067 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45550-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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