solidity/test/libsolidity/smtCheckerTests/special/msg_data.sol
2021-01-04 10:03:16 +01:00

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()