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msuiche / porosity

*UNMAINTAINED* Decompiler and Security Analysis tool for Blockchain-based Ethereum Smart-Contracts

Home Page:https://www.comae.io

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Following bytecode creates infinite loop

iuri-gg opened this issue · comments

commented

I just tried decompiling following bytecode. app hangs up forever using 100% CPU. I do not have original source so or ABI and not sure how to debug what is causing the issue.

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commented

Another one:

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

Verbose output:

orosity v0.1 (https://www.comae.io)
Matt Suiche, Comae Technologies <support@comae.io>
The Ethereum bytecode commandline decompiler.
Decompiles the given Ethereum input bytecode and outputs the Solidity code.

assignXrefToBlocks: function @ 0x00000000 (hash = 0x00000000)
assignXrefToBlocks: function @ 0x0000000D (hash = 0x6a5e2650)
assignXrefToBlocks: function @ 0x00000041 (hash = 0x75a4e3a0)
assignXrefToBlocks: function @ 0x00000051 (hash = 0x00000000)
assignXrefToBlocks: branch @ 0x0000005C
assignXrefToBlocks: branch @ 0x0000007E
assignXrefToBlocks: branch @ 0x000000CD
assignXrefToBlocks: function @ 0x000000DF (hash = 0x00000000)
assignXrefToBlocks: function @ 0x00000104 (hash = 0x00000000)
assignXrefToBlocks: function @ 0x00000111 (hash = 0x00000000)
assignXrefToBlocks: function @ 0x00000121 (hash = 0x00000000)
assignXrefToBlocks: function @ 0x0000017B (hash = 0x00000000)
assignXrefToBlocks: branch @ 0x00000197
assignXrefToBlocks: function @ 0x000001A4 (hash = 0x00000000)
assignXrefToBlocks: branch @ 0x000001AD
assignXrefToBlocks: branch @ 0x000001D4

after that it hangs