verifying smart contract fails when using viaIR is true in truffle config

[payamsafaei]

Describe the bug

verifying smart contract fails when viaIR is true in truffle config

Steps To Reproduce
verifying smart contract fails when viaIR is true in truffle config

compilers: {
     solc: {
       version: "0.8.16",    // Fetch exact version from solc-bin (default: truffle's version)
       //docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
       settings: {          // See the solidity docs for advice about optimization and evmVersion
         optimizer: {
           enabled: true,
           runs:200
         },
         evmVersion: "london",
           viaIR: true
       }
     }

https://github.com/rkalis/truffle-plugin-verify/
Environment information

Please provide environment information as complete as possible. Before submitting a bug report, please make sure that you're running an LTS version of Node and the latest versions of Truffle and truffle-plugin-verify.

• Operating System: win11
• Node version: v16.15.1
• Truffle version: v5.5.28
• truffle-plugin-verify version: v0.5.28

Debug output

Fail - Unable to verify
Failed to verify 1 contract(s): NFTGame

[rkalis]

Hmm interesting. Could you provide a minimal repo where I can reproduce this issue?

[ekn1012]

is your evm version correct? isn't byzantium the default for viaIR?

[heisendevs]

Hi all, I modified these lines and was able to verify the contract

File: node_modules/truffle-plugin-verify/verify.js

  const inputJSON = {
    language: metadata.language,
    sources,
    settings: {
      remappings: metadata.settings.remappings,
      metadata: metadata.settings.metadata,
      viaIR: true,
      optimizer: metadata.settings.optimizer,
      evmVersion: metadata.settings.evmVersion,
      libraries
    }
  }

[mtfuji25]

Hi @heisendevs where do you see inputJSON variable defined? I can't see it

[ivalenzuela]

Hi @heisendevs where do you see inputJSON variable defined? I can't see it

Maybe you are in a new version, try looking at node_modules/truffle-plugin-verify/dist/types.d.ts
node_modules/truffle-plugin-verify/dist/util.d.ts

[mtfuji25]

Hi all, I modified these lines and was able to verify the contract

File: node_modules/truffle-plugin-verify/verify.js

  const inputJSON = {
    language: metadata.language,
    sources,
    settings: {
      remappings: metadata.settings.remappings,
      metadata: metadata.settings.metadata,
      viaIR: true,
      optimizer: metadata.settings.optimizer,
      evmVersion: metadata.settings.evmVersion,
      libraries
    }
  }

I tried this, but didn't work. (I tried with 0.6.0 and 0.6.1 versions)

[sebastian-baier]

I have the same problem with version 5.32.
I added viaIR: true
to inputJSON in verify.js to fix it

the fix works for 6.1. as well

[rkalis]

Truffle is being sunset, so I expect people to move away from Truffle and therefore truffle-plugin-verify. When I tried in the past I haven't been able to figure out a generalised fix that works both with and without viaIR. So with those things in mind I think the workaround mentioned in this thread is good enough and I'll close this issue.