unknown selector 0xdb4235f6 for VmCalls (no support for keyExistsJson)

[PatrickAlphaC]

Component

Forge

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

• Foundry
• Foundryup

What version of Foundry are you on?

forge 0.0.2 (dc4b81f 2024-05-21T15:26:16.686968000Z)

What command(s) is the bug in?

forge test

Operating System

macOS (Intel)

Describe the bug

1. Install foundry-zksync
2. forge init
3. Set your Counter.s.sol to the following:

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Script, console} from "forge-std/Script.sol";

contract CounterScript is Script {
    function setUp() public {}

    function run() public {
        bool exists = vm.keyExistsJson('{"hi": "true"}', ".hi");
        console.log(exists);
    }
}

4. Run the script:

forge script script/Counter.s.sol 

You'll get an output like:

✓ Compiled 20 files!     
Traces:
  [121871] → new CounterScript@0x7FA9385bE102ac3EAc297483Dd6233D62b3e1496
    └─ ← 498 bytes of code

  [98] CounterScript::setUp()
    └─ ← ()

  [2994] CounterScript::run()
    ├─ [0] VM::keyExistsJson("{\"hi\": \"true\"}", ".hi") [staticcall]
    │   └─ ← unknown selector `0xdb4235f6` for VmCalls
    └─ ← unknown selector `0xdb4235f6` for VmCalls


Gas used: 24058
Error: 
script failed: unknown selector `0xdb4235f6` for VmCalls

However, run it with vanilla foundry:

foundryup
 forge script script/Counter.s.sol

and you'll get:

Script ran successfully.
Gas used: 27031

== Logs ==
  true

[RonTuretzky]

also experiencing this on forge 2cb8757

[Karrq]

As @nbaztec already mentioned here, this is due to the cheatcode in question (and possibly others) being added after our latest update from upstream foundry.
Currently we are in the process of updating our fork to upstream, which will add support to this cheatcode as well as others that have been added since then.

[Karrq]

Tracking in #443