How to get the address of the code being executed from CALLCODE?

Asked Jul 03 '19 at 07:47

Active Jul 03 '19 at 23:23

Viewed 70 times

I want to write a library which can be callcalled by any contract.

As part of this, I want to write a function which returns the contract address of the library to the contract which callcalled it.

address(this) is normally the solution, but in the case of callcode, it can only be used to check if the contract is being callcalled through if(address(this)==msg.sender) which become always true.

So how to perform this without having to rewrite the code each time because of the requirement to predict the future library’s contract address ?

edited Jul 03 '19 at 23:23

asked Jul 03 '19 at 07:47

user2284570

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Can you define the term "callcalled"? – user94559 Jul 03 '19 at 19:07
@smarx called through the `CALLCODE` opcode of course. – user2284570 Jul 03 '19 at 23:21
"Of course"? Is that term used anywhere else? I've certainly never seen it. – user94559 Jul 04 '19 at 01:12

How to get the address of the code being executed from CALLCODE?

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