1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
// SPDX-License-Identifier: MIT
pragma solidity ^0.8;
/* runner.json
{
"differential": true,
"actions": [
{
"Instantiate": {
"code": {
"Solidity": {
"contract": "Context"
}
}
}
},
{
"Call": {
"dest": {
"Instantiated": 0
},
"data": "846a1ee1"
}
},
{
"Call": {
"dest": {
"Instantiated": 0
},
"data": "fc9c8d39"
}
},
{
"Call": {
"dest": {
"Instantiated": 0
},
"data": "3af973b1"
}
}
]
}
*/
contract Context {
function address_this() public view returns (address ret) {
ret = address(this);
}
function caller() public view returns (address ret) {
ret = msg.sender;
}
function chain_id() public view returns (uint) {
uint256 id;
assembly {
id := chainid()
}
return id;
}
}