All Questions
Tagged with delegatecall callcode
10 questions
1
vote
1
answer
152
views
How do I call delegatecall and how do I change it to use the following contract to call?
a is the contract that contains the delegate call, b is the calling contract,
I wonder if this B contract can be used for another contract also which contains delegate call?
In the end, I'm interested ...
- 41
22
votes
2
answers
8k
views
What is the difference between the STATICCALL and CALL EVM opcodes?
Besides the regular and very common CALL, the Ethereum Virtual Machine has the STATICCALL opcode. In which ways does it differ from the regular CALL?
Edit: This is not a duplicate because this ...
- 10.5k
0
votes
1
answer
794
views
How to get the returned value from the delegate call on the function of another contract?
Here is my example:
contract A {
function a() public returns(uint256) {
return 1;
}
}
contract B {
address addrOfA;
function b() public returns(uint256) {
(, bytes ...
- 31
1
vote
1
answer
840
views
How to use call, delegate call?
I have created two contracts A and B as follow:
Contract A:
pragma solidity 0.4.25;
contract A{
// uint public X ;
event MyName(address _from, address sender);
function checkMe(uint val)...
- 299
1
vote
1
answer
674
views
How to prevent the code of my contract being used in a CALLCODE?
Simple question but I couldn’t find the answer anywhere.
How to know if the code of my contract is used in a CALLCODE or DELEGATECALL by third party sinceaddress(this)returns the address of the caller ...
- 1,029
1
vote
1
answer
1k
views
Solidity - selfdestruct
I'm just wondering what would happen if I don't put a selfdestrut() method in my smart contract.
As I read from the Solidity documentation (Self-destruct):
Even if a contract’s code does not ...
- 101
0
votes
1
answer
271
views
When using Delegatecall or callcode, which Ether balance is used?
Simple question, but I couldn’t find the answer.
When contract A CALLCODE B, B will uses A’s ledger. But which Ether balance will be used if B makes a normal transfer, the balance of A or the balance ...
- 1,029
0
votes
0
answers
136
views
call wont work in order to update another contract's storage
Storage(variable n) of E won't get updated when I use call from contract D.
addressOfE = "0x13fac93069c10e977204b9b64502439740cbe46a"; //Contract E's address that exist on my private chain.
call ...
- 8,404
3
votes
1
answer
1k
views
Callcode | Delegatecall don't work
I was playing around with call, delegatecall and callcode and discovered that the function reset stopped working after I had made a callcode call (here are my actions):
FROM JS SIDE:
— A.makeCall({...
- 4,308
117
votes
6
answers
53k
views
Difference between CALL, CALLCODE and DELEGATECALL
CALL and CALLCODE take the same number of operands (in the execution stack). For the exception flag being pushed on top of the stack: 0 means exception, 1 means successful execution. CALL is easy to ...
- 2,113