block.coinbase does only return 0x

[loki-sama]

Expected Behavior

I expected to get accounts[0] as block.coinbase.

Current Behavior

I got 0x0000000000000000000000000000000000000000 as block.coinbase.

curl -X POST --data '{"jsonrpc":"2.0", "method":"eth_coinbase", "params":[],"id":9999}' 127.0.0.1:8545
Gives me accounts[0].

Possible Solution

Steps to Reproduce (for bugs)

1. run ganache-cli
2. deploy contract

pragma solidity ^0.4.24;


contract TestCoinbase {

    function getCoinbase() public returns (address){
        return block.coinbase;
    }
}

3. call getCoinbase

Context

Try to run tests for code that uses block.coinbase.

Your Environment

Ganache CLI v6.1.8 (ganache-core: 2.2.1)
OSX 10.13.6

[davidmurdoch]

Thanks for reporting this @loki-sama. I've confirmed that this is still an issue on our develop branch and have filed this bug to our issue backlog.

[Goldenflamer]

This is still an issue in 2020

[nicholasjpaterno]

@Goldenflamer Thanks for the bump on this issue. Unfortunately this is a little lower priority than some of our other issues. That said, I plan on fixing this ASAP but if this is a blocker for you we highly encourage PR's!

[davidmurdoch]

block.coinbase is actually intended to be the 0x0 address, as it is the block that receives the reward. The bug is that eth_coinbase returns accounts[0].

The reason the block coinbase can't be accounts[0] by default is that each block would change the accounts balance, and would then break many tests that rely on this behavior.

This will be fixed in the next major version of ganache, where we'll allow for configuring the coinbase address.

[davidmurdoch]

done in ganache@3.0.0-internal.0