functionCallWithValue doesn't seem to be calling the right functions?

Support Contracts
1

I'm using functionCallWithValue() to call UniswapV3's swap function. I have confirmed that the params are correct because calling the function directly works. But when I try to do so through functionCallWithValue, it errors out with 'Address: low level call with value failed'.

I thought the problem was with my use of the functionCallWithValue() function because in the docs it lists 3 arguments instead of the 2 I use here, but when I try putting 3 arguments in, it says

Member "functionCall" not found or not visible after argument-dependent lookup in address.

despite the fact that I'm importing
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
and
using Address for address;

:1234: Code to reproduce

IV3SwapRouter swapRouter02 = IV3SwapRouter(uniswapRouter);
            IV3SwapRouter.ExactInputSingleParams memory params = IV3SwapRouter
            .ExactInputSingleParams({
                tokenIn: _sellComponent,
                tokenOut: _buyComponent,
                fee: 3000,
                recipient: address(this),
                amountIn: 10**16,
                amountOutMinimum: 1,
                sqrtPriceLimitX96: 0
            });
            //this is working
            //amountOut = swapRouter02.exactInputSingle(params);

            bytes memory callData = abi.encodeWithSignature(
                SWAP_EXACT_INPUT,
                params
            );
            //this is not working
           bytes memory _return = uniswapRouter.functionCallWithValue(callData, 0);

:computer: Environment

Hardhat. Can provide the javascript testing snippet I'm using if necessary

2

I believe that you should be using swapRouter02 here, not uniswapRouter.

3

Using swaprouter errors out because it's of the type IV3SwapRouter, so casting it to address(swaprouter) results in the same address as uniswapRouter

4

This does not correspond with the code that you've posted.

5

Hey @benen, can you share a minimal repository that we can run?

As previously pointed out, functionCall is not in the function-call chain, since functionCall resolves to functionCallWithValue, not the other way around.

My guess is that the error is somewhere else.