Cast is (likely) querying the wrong RPC provider

[martinvol]

Component

Cast

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

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.2.0 (fa0e0c2 2024-08-22T00:19:05.210000000Z)

What command(s) is the bug in?

cast call

Operating System

macOS (ARM)

Describe the bug

Call #1

cast call 0xB880785961B8fC4630dDa03B439D07009464111f 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 --rpc-url https://sepolia.optimism.io --trace
Traces:
  [0] 0xB880785961B8fC4630dDa03B439D07009464111f::resolveWithProof(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, 0x00000000000000000000000000000000000000000000000000000000000000400000000000000000000000008464135c8f25da09e49bc8782676a84730c318bc00000000000000000000000000000000000000000000000000000000000001449061b92300000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000080000000000000000000000000000000000000000000000000000000000000000a0474657374036574680000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008459d1d43ceb4f647bea6caa36333c816d7b46fdcb05f9466ecacc140ea8c66faf15b3d9f100000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000005656d61696c0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000)
    └─ ← [Stop]


Transaction successfully executed.
Gas used: 26796

But then that address doesn't have code on OP Sepolia:

Call #2

% cast code 0xB880785961B8fC4630dDa03B439D07009464111f --rpc-url https://sepolia.optimism.io
0x

The explorer also confirms the address doesn't have any bytecode: https://sepolia-optimism.etherscan.io/address/0xB880785961B8fC4630dDa03B439D07009464111f

The contract does have bytecode in Sepolia (eth), so my guess is that cast is somehow using a Sepolia RPC, but I couldn't confirm this.

[martinvol]

I also tried this in someone else's laptop and got the same result.

[mattsse]

could you share RUST_LOG=trace cast ..

only need the first few lines

[martinvol]

% RUST_LOG=trace cast call 0xB880785961B8fC4630dDa03B439D07009464111f 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 --rpc-url https://sepolia.optimism.io --trace

2024-09-07T18:18:26.794887Z TRACE foundry_wallets::wallet: start finding signer
2024-09-07T18:18:26.795563Z TRACE alloy_rpc_client::call: polling RpcCall self.state=Prepared
2024-09-07T18:18:26.795702Z DEBUG alloy_rpc_client::call: sending request method=eth_chainId id=0
2024-09-07T18:18:26.795874Z TRACE alloy_rpc_client::call: full request params_ty=() request=Request { meta: RequestMeta { method: "eth_chainId", id: Number(0), is_subscription: false }, params: () }
2024-09-07T18:18:26.796220Z TRACE alloy_rpc_client::call: serialized request request={"method":"eth_chainId","id":0,"jsonrpc":"2.0"}
2024-09-07T18:18:26.942069Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::pool: checkout waiting for idle connection: ("https", sepolia.optimism.io)
2024-09-07T18:18:26.942140Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: reqwest::connect: starting new connection: https://sepolia.optimism.io/
2024-09-07T18:18:26.942157Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::connect::http: Http::connect; scheme=Some("https"), host=Some("sepolia.optimism.io"), port=None
2024-09-07T18:18:26.942327Z DEBUG hyper_util::client::legacy::connect::dns: resolving host="sepolia.optimism.io"
2024-09-07T18:18:26.944855Z TRACE alloy_rpc_client::call: polling RpcCall self.state=AwaitingResponse
2024-09-07T18:18:26.944866Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::connect::http: connecting to 104.18.10.221:443
2024-09-07T18:18:26.958629Z TRACE alloy_rpc_client::call: polling RpcCall self.state=AwaitingResponse
2024-09-07T18:18:26.958644Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::connect::http: connected to 104.18.10.221:443
2024-09-07T18:18:26.974770Z TRACE alloy_rpc_client::call: polling RpcCall self.state=AwaitingResponse
2024-09-07T18:18:26.975727Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::client: http1 handshake complete, spawning background dispatcher task
2024-09-07T18:18:26.975764Z TRACE alloy_rpc_client::call: polling RpcCall self.state=AwaitingResponse
2024-09-07T18:18:26.975770Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::pool: checkout dropped for ("https", sepolia.optimism.io)
2024-09-07T18:18:27.075477Z TRACE alloy_rpc_client::call: polling RpcCall self.state=AwaitingResponse
2024-09-07T18:18:27.075505Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::pool: put; add idle connection for ("https", sepolia.optimism.io)
2024-09-07T18:18:27.075512Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::pool: pooling idle connection for ("https", sepolia.optimism.io)
2024-09-07T18:18:27.075518Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: alloy_transport_http::reqwest_transport: received response from server status=200 OK
2024-09-07T18:18:27.075529Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: alloy_transport_http::reqwest_transport: retrieved response body. Use `trace` for full body bytes=45
2024-09-07T18:18:27.075576Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: alloy_transport_http::reqwest_transport: response body body={"jsonrpc":"2.0","result":"0xaa37dc","id":0}

2024-09-07T18:18:27.076637Z TRACE alloy_json_rpc::result: deserializing response ty=ruint::Uint<64, 1> json="\"0xaa37dc\""
2024-09-07T18:18:27.077017Z TRACE alloy_json_rpc::result: deserialized response response=11155420
2024-09-07T18:18:27.077048Z TRACE alloy_rpc_client::call: polling RpcCall self.state=Prepared
2024-09-07T18:18:27.077050Z DEBUG alloy_rpc_client::call: sending request method=eth_blockNumber id=0
2024-09-07T18:18:27.077054Z TRACE alloy_rpc_client::call: full request params_ty=() request=Request { meta: RequestMeta { method: "eth_blockNumber", id: Number(0), is_subscription: false }, params: () }
2024-09-07T18:18:27.077061Z TRACE alloy_rpc_client::call: serialized request request={"method":"eth_blockNumber","id":0,"jsonrpc":"2.0"}
2024-09-07T18:18:27.215038Z TRACE ReqwestTransport{url=https://sepolia.optimism.io/}: hyper_util::client::legacy::pool: checkout waiting for idle connection: ("https", sepolia.optimism.io)
2024-09-07T18:18:27.215057Z DEBUG ReqwestTransport{url=https://sepolia.optimism.io/}: reqwest::connect: starting new connection: https://sepolia.optimism.io/

[klkvr]

hmm, the trace you've shared is empty, and immidiately stops, which is what a call to EOA look like, how does command output imply that address has code?

[martinvol]

I am claiming that the address 0xB880785961B8fC4630dDa03B439D07009464111f does not have bytecode on OP Sepolia, so the first contract call should just revert.

[klkvr]

calls to EOA do not revert, this is basically just a zero value transfer

[martinvol]

Are you reffering to the first call?

cast call 0xB880785961B8fC4630dDa03B439D07009464111f 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 --rpc-url https://sepolia.optimism.io --trace
Traces:
  [0] 0xB880785961B8fC4630dDa03B439D07009464111f::resolveWithProof(0x00000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000066dc774a00000000000000000000000000000000000000000000000000000000000000e000000000000000000000000000000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000001074657374406578616d706c652e636f6d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040d868823de1e6540e8cf0ccd9aebc96ded505b489cbc774da1aa522072bd0385e87a82de4cd91de4f191e61e64ecb1a1c293d3823de003f877d67b9467091c4eb, 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)
    └─ ← [Stop]


Transaction successfully executed.
Gas used: 26796

It is definitely doing something, it even has the function name resolveWithProof that exist in the contract on Sepolia.

[klkvr]

It immediately stops execution (and uses 0 gas)

foundry automatically decodes the function selector and arguments from calldata for any calls, contract's code does not affect this behavior

[martinvol]

To clarify, I just numbered the calls, the bug I'm reporting is for call #1. It should fail instead of making up a trace. Am I missing something?

[martinvol]

If this is the expected behaviour, then I find it very misleading that it reports "Transaction successfully executed" and non-zero gas usage without a warning.