2018-03-20 15:10:58 +00:00
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---
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2018-03-21 12:51:05 +00:00
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eip: 141
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title: Designated invalid EVM instruction
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author: Alex Beregszaszi
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type: Standard Track
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category: Core
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status: Final
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created: 2017-02-09
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2018-03-20 15:10:58 +00:00
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---
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2017-02-09 18:16:57 +00:00
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## Abstract
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An instruction is designated to remain as an invalid instruction.
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## Motivation
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The invalid instruction can be used as a distinct reason to abort execution.
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## Specification
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The opcode `0xfe` is the `INVALID` instruction. It can be used to abort the execution (i.e. duplicates as an `ABORT` instruction).
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## Backwards Compatibility
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This instruction was never used and therefore has no effect on past contracts.
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## Copyright
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Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).
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