{"author_name":"yupo5656","url":"https://yupo5656.hatenadiary.org/entry/20040830/p2","author_url":"https://blog.hatena.ne.jp/yupo5656/","provider_name":"Hatena Blog","image_url":null,"blog_url":"https://yupo5656.hatenadiary.org/","height":"190","description":"2\u3061\u3083\u3093\u306d\u308b GCC\u30b9\u30ec\u3088\u308a\u3002 116 \u540d\u524d\uff1a\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u540d\u7121\u3057\u3055\u3093 \u6295\u7a3f\u65e5\uff1a04/08/30 11:43 long long\u306e\u5909\u6570\u3092int\u578b\u306e\u5909\u6570\u306b\u4ee3\u5165\u3057\u305f\u6642\u3001\u8b66\u544a\u3059\u308b\u3088\u3046\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3063\u3066\u3042\u308a\u307e\u3059\u3067\u3057\u3087\u3046\u304b\uff1f integer overflow \u3092\u8d77\u3053\u3057\u3066\u3044\u305d\u3046\u306a\u5834\u6240\u306e\u76ee\u661f\u3092\u3064\u3051\u308b\u306e\u306b\u3001\u78ba\u304b\u306b\u3053\u3046\u3044\u3046\u8b66\u544a\u304c\u53ef\u80fd\u3060\u3068\u5b09\u3057\u3044\u3002\u300clong long \u304b\u3089 int\u300d\u306b\u9650\u5b9a\u3057\u3066\u3044\u308b\u306e\u3082\u3001\u6c17\u6301\u3061\u306f\u3088\u304f\u308f\u304b\u308b\u3002\u4f8b\u3048\u3070\u3001LP64\u74b0\u5883\u3001\u3042\u308b\u3044\u306foff_t\u304c64bit\u306e\u74b0\u5883(\u4f8b: g++ -D_FILE_OFFSET_BITS=64)\u3067\u3001\u300c\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3084\u30c7\u30a3\u30b9\u30af\u30b5\u30a4\u30ba\u3092\u3001\u3044\u3064\u306e\u307e\u306b\u304b32bit\u5e45\u306e\u5909\u6570\u306b\u4ee3\u5165\u3057\u3066\u2026","title":" GCC\u306e\u8b66\u544a(implicit narrowing conversion)","type":"rich","width":"100%","version":"1.0","published":"2004-08-30 00:00:01","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyupo5656.hatenadiary.org%2Fentry%2F20040830%2Fp2\" title=\" GCC\u306e\u8b66\u544a(implicit narrowing conversion) - memologue\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","categories":["C++","security"],"blog_title":"memologue"}