Bytecode starting with 0xef cannot be deployed.

[iteyelmp]

Creating a storage contract will fail if the split chunk happens to start with 0xef, because this is a special opcode that is not allowed to start with a string.

[qizhou]

Interesting. A way to avoid this is to define a new storage format with magic + version + actual data

[iteyelmp]

Interesting. A way to avoid this is to define a new storage format with magic + version + actual data

https://sepolia.etherscan.io/tx/0x353a93601b28ea48b1cb31581728e02dcdfee194d781001f7c3b2e80d3686d6b/advanced#internal

StorageSlotFactoryFromInput c = new StorageSlotFactoryFromInput(data);

By chance, it was discovered that the third chunk of a file failed to upload. After investigation, it was found that the content of this chunk started with 0xef.