Solidity 0.6.0 address(this).balance throws error invalid opcode

Question

Whenever I try to execute a function that uses address(this).balance I get an invalid opcode error. It compiles fine using 0.6.0.

Using truffle debug I get the following error:

Transaction halted with a RUNTIME ERROR.

There was no revert message.  This may be due to an in intentional halting expression, such as assert(), revert(), or require(), or could be due to an unintentional exception such as out-of-gas exceptions.
Please inspect your transaction parameters and contract code to determine the meaning of this error.

I checked the docs but there's no breaking change for using address(this).balance. Am i missing something?

Edit: I just tested this code in remix and it throws as well:

    pragma solidity 0.6.0;

    contract A {
        uint public total;

        receive() external payable {
            total = address(this).balance;
        }
    }

Answer 1

I managed to fix it by explicitly defining the EVM version in my truffle config file. It's still weird because Remix supports this (as seen in the attached image) as well but still fails.

  compilers: {
    solc: {
      version: "0.6.0",
      settings: {
        optimizer: {
          enabled: true
        },
        evmVersion: "petersburg"
      }
    }
  }

Edit: I created an issue for the Remix team here.

Answer 2

Summarizing the comments above, the change-log for compiler version 0.5.13 mentions a related fix:

Code Generator: Use SELFBALANCE opcode for address(this).balance if using Istanbul EVM.

So I'm taking the liberty to guess that your issue:

1. Is actually a result of the recent hard-fork
2. Actually dates back to compiler version 0.5.13

I'm wondering (and worried about) what happens in already compiled and deployed contracts which make use of address(this).balance...