• Parity version: 1.6.8
  • Operating system: MacOS
  • And installed: docker

start on

--chain dev

here's test contract A

contract A {
    mapping (address => uint256) balances;
    function testFunc1(address _to, uint256 _value) {
        balances[_to] += _value;
    function testFunc2(address _to, uint256 _value) {
        balances[_to] += 1;
        balances[_to] += 1;
    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balances[_owner];

here's invoker contract B

contract B {
    function testSend1(address _contract, address _to, uint256 _value) {
        _contract.call.gas(400000)(bytes4(keccak256("testFunc1(address,uint256)")), _to, _value);
    function testSend2(address _contract, address _to, uint256 _value) {
        _contract.call.gas(400000)(bytes4(keccak256("testFunc2(address,uint256)")), _to, _value);
  • excute A's testFunc1 & testFunc2 is work
  • excute B's testSend1 is work
  • why excute B's testSend2 happened nothing ?【actually, the selected address should +2 on balances】

What's wrong with my contract code?


oh,I got it.


should to be:

A a = A(contract_A_address);

a.testFunc2(_to, _value);

  • Don't forget to mark your question accepted. – Afr Aug 29 '17 at 9:12

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