{"url":"https://yupo5656.hatenadiary.org/entry/20051214/p1","height":"190","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyupo5656.hatenadiary.org%2Fentry%2F20051214%2Fp1\" title=\" integer overflow \u6d41\u884c\u308a\u306a\u6628\u4eca - memologue\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"yupo5656","title":" integer overflow \u6d41\u884c\u308a\u306a\u6628\u4eca","author_url":"https://blog.hatena.ne.jp/yupo5656/","blog_title":"memologue","type":"rich","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","categories":["security"],"blog_url":"https://yupo5656.hatenadiary.org/","version":"1.0","published":"2005-12-14 00:00:00","description":"\u6700\u8fd1\u3001integer overflow\u304c\u6839\u672c\u539f\u56e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30db\u30fc\u30eb\u3092\u826f\u304f\u898b\u304b\u3051\u307e\u3059\u3002\u666e\u901a\u306e\u30d0\u30c3\u30d5\u30a1\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306b\u3064\u3044\u3066\u306f\u4e16\u9593\u306e\u7406\u89e3\u304c\u9032\u3093\u3067\u3001\u6700\u8fd1\u3067\u306f char buf[1024] = {0}; char* dst = buf; while(*src != '=') *dst++ = *src++; // 1023\u6587\u5b57\u76ee\u307e\u3067\u306b = \u304c\u5b58\u5728\u3057\u306a\u3044\u3068crash \u307f\u305f\u3044\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u4eba\u306f\u3050\u3063\u3068\u6e1b\u308a\u307e\u3057\u305f\u3051\u3069\u3001 int ret = 0; while(std::isdigit(*src)) ret = (ret * 10) + (*src++ - '0'); return ret; \u306e\u3088\u3046\u306a\u3001strt\u2026","image_url":null}