ja:rule:num:整数値のオーバーフローを検出_防止する
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| ja:rule:num:整数値のオーバーフローを検出_防止する [2016/03/19 00:31] – yohgaki | ja:rule:num:整数値のオーバーフローを検出_防止する [2017/06/30 11:32] (current) – [参考文献] yohgaki | ||
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| Line 74: | Line 74: | ||
| // Check signed 32 bit integer overflow | // Check signed 32 bit integer overflow | ||
| // Under 32 bit OS, $myint became float. Under 64 bit OS, check 32 bit integer range | // Under 32 bit OS, $myint became float. Under 64 bit OS, check 32 bit integer range | ||
| - | if (is_float($myint) || $myint < 0xFFFFFFFF | + | if (is_float($myint) || $myint < 0x80000000 |
| throw new Exception(' | throw new Exception(' | ||
| } | } | ||
| Line 103: | Line 103: | ||
| ===== 参考文献 ===== | ===== 参考文献 ===== | ||
| + | * https:// | ||
| + | * https:// | ||
| + | * https:// | ||
ja/rule/num/整数値のオーバーフローを検出_防止する.1458347508.txt.gz · Last modified: 2016/03/19 00:31 by yohgaki