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xilibi2003
reviewed
Aug 8, 2023
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| # 批准骗局 | |||
| [DataLocation.sol](https://github.com/SunWeb3Sec/DeFiVulnLabs/blob/main/src/test/DataLocation.sol) | ||
| **名称：** 数据位置混淆漏洞 | ||
| **描述：** | ||
| updaterewardDebt函数中滥用用户的存储和内存引用。 |
| https://www.educative.io/answers/storage-vs-memory-in-solidity | ||
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| 数组合约：（紫色字为固定功能） |
| **名称：** 在高于0.8.15版本Solidity中的脏字节 | ||
| 将字节数组从memory或calldata复制到storage是以32字节为单位进行的，即使长度不是32的倍数。 | ||
| 因此，超出数组末尾的额外字节可以从calldata或memory复制到storage。 | ||
| 这些脏字节可能会在.push()之后变得可观察，而无需存储中字节数组的参数，即这样的push不会像预期的那样在数组末尾产生零值。 |
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