Passing Vec to script causes random values inside script

TypeScript SDK
1

What version of fuels-ts are you using?

Latest

Steps to Reproduce

The script

script;

struct SomeStruct {
    some_number: u64,
    some_vec: Vec<u64> 
}

fn main(
    some_contract: ContractId,
    some_struct: SomeStruct,
) {
    log(some_struct.some_number);
    log(some_struct.some_vec.get(0).unwrap());
    require(some_struct.some_vec.get(0).unwrap() == 1, "wtf is going on");
}

The script call

async function simpleScript(
    someContract: Contract,
    wallet: WalletUnlocked
) {
    const scriptBin = readFileSync(
        join(__dirname, "../../../scripts/simple-script/out/debug/simple-script.bin")
    );

    const scriptInstance = new Script<[ContractIdInput, Number[]], any>(
        scriptBin,
        simpleScriptAbi,
        wallet
    );

   const someStruct = {
        some_number: 1,
        some_vec: [1],
    };

    const request = await scriptInstance.functions
        .main({ value: someContract.id.toHexString() }, someStruct)
        .addContracts([someContract])
        .txParams({ gasPrice: 1 })
        .call();
}

Expected Behavior

Log should return 1 or BN: 0x1 for BOTH the some_number and some_vec.

Actual Behavior

Log returns 1 for some_number and different, random values for some_vec on each script call.

Would be great if somebody could reproduce and take a look. Passing Vec to script causes random values inside script · Issue #1015 · FuelLabs/fuels-ts · GitHub

2

Edit: This applies to Vecs in general, regardless of whether they are passed through struct or not. Reproducer inside the linked GH issue.

3

Thank you for opening an issue for this.

Let’s track this via Github and post the status here when it’s addressed.

1 Like