mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
27 lines
814 B
Solidity
27 lines
814 B
Solidity
pragma experimental SMTChecker;
|
|
|
|
contract C
|
|
{
|
|
function f() public payable {
|
|
assert(msg.data.length > 0);
|
|
// Fails since calldata size should be 4
|
|
assert(msg.data.length > 4);
|
|
// f's sig is 0x26121ff0
|
|
assert(msg.data[0] == 0x26);
|
|
assert(msg.data[1] == 0x12);
|
|
assert(msg.data[2] == 0x1f);
|
|
assert(msg.data[3] == 0xf0);
|
|
}
|
|
function g() public payable {
|
|
// g's sig is 0xe2179b8e
|
|
assert(msg.data[0] == 0xe2);
|
|
assert(msg.data[1] == 0x17);
|
|
assert(msg.data[2] == 0x9b);
|
|
// Fails
|
|
assert(msg.data[3] == 0x8f);
|
|
}
|
|
}
|
|
// ----
|
|
// Warning 6328: (153-180): CHC: Assertion violation happens here.\nCounterexample:\n\n\n\n\nTransaction trace:\nC.constructor()\nC.f()
|
|
// Warning 6328: (500-527): CHC: Assertion violation happens here.\nCounterexample:\n\n\n\n\nTransaction trace:\nC.constructor()\nC.g()
|