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EIP-141: Designated invalid EVM instruction

FinalCore

AuthorsAlex Beregszaszi (@axic)
Finalized2018-03-23
Created2017-02-09

Abstract ​

An instruction is designated to remain as an invalid instruction.

Motivation ​

The invalid instruction can be used as a distinct reason to abort execution.

Specification ​

The opcode 0xfe is the INVALID instruction. It can be used to abort the execution (i.e. duplicates as an ABORT instruction).

Backwards Compatibility ​

This instruction was never used and therefore has no effect on past contracts.

Copyright and related rights waived via CC0.

Citation

Please cite this document as:

Alex Beregszaszi, "EIP-141: Designated invalid EVM instruction," Ethereum Improvement Proposals, no. 141, 2017. [Online serial]. Available: https://eips.ethereum.org/EIPS/eip-141.