0xdeadcode Link

function withdraw() external { if (false) { selfdestruct(payable(owner)); } // normal withdrawal logic } The optimizer removed the if (false) branch in bytecode entirely — or so I thought. Actually, the compiler preserved a JUMPDEST but no incoming JUMP opcode.

But there was a SSTORE in an admin function that allowed toggling a boolean flag — and that flag was used in another function to compute a jump offset via JUMPI . With a specific storage layout, that flag could point to the dead JUMPDEST . 0xdeadcode

April 13, 2026

It sounds like you're asking me to develop a post under the handle — likely for a platform like X (Twitter), a blog, GitHub, or a forum such as Ethereum Research or Stack Overflow. With a specific storage layout, that flag could

Don't bury code. Delete it.

One storage write to flip the false to true later, and pause becomes owner-only backdoor. Delete it

Dead code is a time bomb. Diffuse it. Title: 0xdeadcode — The Living Dead in Your Bytecode