forge verify-contract is unable to verify contracts with --via-ir option

[davetist]

Component

Forge

Have you ensured that all of these are up to date?

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (fb4a836 2022-10-18T00:07:33.891597Z)

What command(s) is the bug in?

forge verify-contract 0x82c1e732d00dc8850ed723d326fc859e21641302 src/Circlets.sol:Circlets --watch --num-of-optimizations 200

Operating System

macOS (Apple Silicon)

Describe the bug

I think this might be similar to #2996

I compile my contract with --via-ir option, I added the --verifyoption when I executed the deploy contract but it failed to verify forge script script/Counter.s.sol:CounterScript --rpc-url url --gas-price 15 --broadcast --verify --via-ir -vvvv

Start verification for (1) contracts

Submitting verification for [src/Circlets.sol:Circlets] "0x82C1e732D00DC8850Ed723D326FC859e21641302".
Submitted contract for verification:
	Response: `OK`
	GUID: `kgsiiumttlafyz75snewzmmigpvffbteye4kpmd96rbtzhrl7k`
	URL:
        https://etherscan.io/address/0x82c1e732d00dc8850ed723d326fc859e21641302
Waiting for verification result...
Contract verification failed:
Response: `NOTOK`
Details: `Fail - Unable to verify`

I also got this error during the first simulation, which I don't know if it's related or not:

2022-10-18T00:52:49.201545Z ERROR foundry_cli::cmd::forge::script::transaction: Failed to extract constructor args from CREATE data constructor="constructor()" contract=Some("Circlets") bytecode="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This is the deployed contract: https://etherscan.io/address/0x82c1e732d00dc8850ed723d326fc859e21641302

The same error happens when I run forge verify-contract 0x82c1e732d00dc8850ed723d326fc859e21641302 src/Circlets.sol:Circlets --watch --num-of-optimizations 200

Submitted contract for verification:
	Response: `OK`
	GUID: `b3vd1jhhu1txlvshfmpmaf9kgvemryn7ufg58urwdi5irgvfre`
	URL:
        https://etherscan.io/address/0x82c1e732d00dc8850ed723d326fc859e21641302
Waiting for verification result...
Contract verification failed:
Response: `NOTOK`
Details: `Fail - Unable to verify`

I've tried to verify it manually in Etherscan with the flatten option, but I get
CompilerError: Stack too deep. Try compiling with --via-ir(cli) or the equivalentviaIR: true (standard JSON) while enabling the optimizer. Otherwise, try removing local variables. When compiling inline assembly: Variable length is 2 slot(s) too deep inside the stack. which I can't see any option to add it there?

Let me know if I can help to debug this, this is the whole flattened contract in case it helps https://gist.github.com/apeblond/014e76bde633791270809daacb68df34

[davetist]

I think this could be related argotorg/solidity#13311 (comment)

[rkrasiuk]

hey @apeblond, thanks for reporting. this is an issue our users have been experiencing for a while now, we're chatting with etherscan to see how we can resolve the resulting bytecode mismatch

[davetist]

hey @apeblond, thanks for reporting. this is an issue our users have been experiencing for a while now, we're chatting with etherscan to see how we can resolve the resulting bytecode mismatch

Thank you for your quick response! @rkrasiuk I didn't know exactly if the problem was something caused by me or not taking into account it's a bit of a black-box for me!

Do you know if there is a way for me to verify the contract manually somehow, or is it just that Etherscan doesn't support this new compilation? Appreciate you taking the time to discuss it with them!

In theory Etherscan allows to pass the via-ir option via standard json, but I wasn't able to make it work either (tried with the json in ./out/Circlets.sol/Circlets.json)

[eugenioclrc]

same issue here :S :S

[degatchi]

Same issue here. When I deploy the contract I can't verify it manually with the flatten command either - shows different bytecode.

[seanconnollydev]

Experiencing this as well but surprisingly not for every project where I've had to set via_ir = true.

I also have not found a way to perform the verification manually. I've tried uploading a standard-json-input at Etherscan's behest but I can't figure out how to get foundry to build the output in a way that Etherscan is pleased with.

I've tried forge build --extra-output-files metadata and then uploading the file under /out/MyContract.sol/MyContract.metadata.json but Etherscan doesn't permit URLs in the source fields:

Unable to process the standard-input-json you uploaded. ErrCode: Only literal contents of the source file, Source using URLS are not supported

Etherscan lists these recommendations:

1. Contract sources in the json file must be formatted as Literal contents and NOT as urls
2. Use multiple literal {"content": "", ...} for multi part contracts containing multiple source files
3. A serializing raw text tool for converting objects to JSON string is also available.

I assume 1 or 2 are relevant here but I don't really know how to act on that.

Is there a way to update foundry.toml or pass an argument to forge build that formats sources in the json file as "literal contents"?

[Raunaque97]

I also had to use the --via-ir option during compiling. Now I am not able to verify in etherscan. I am using the following,
forge verify-contract --chain-id 5 --num-of-optimizations 20000 --watch --compiler-version v0.8.17+commit.8df45f5f 0x3B1574a84A09432150FF0B436cB646F06165977c src/Pots.sol:Pots.
I am not sure whether its related to this or I am just forgetting to pass additional parameters. The deployed contract has no constructor args.

[nnnnicholas]

Same issue. forge create with via-ir and verify deploys successfully but returns the following error during verification:

Contract verification status:
Response: `NOTOK`
Details: `Fail - Unable to verify. Solidity Compilation Error: Compiler error (circleci\project\libsolidity\codegen\LValue.cpp:56):Stack too deep. Try compiling with `--via-ir` (cli) or the equivalent `viaIR: true` (standard JSON) while enabling the optimizer. Otherwise, try removing local variables.`

[ioannist]

same problem, but I am using truffle, so this is probably something etherscan needs to fix

[0xV4L3NT1N3]

gm all, chiming in here from Etherscan, could anyone try manually submitting a standard-json verification from the web interface with the viaIR setting specified ?

This will help debug if its something related to the endpoint, though can confirm we've added support for viaIR