solidity/test/libsolidity/smtCheckerTests/unchecked/unchecked_div_by_zero.sol
2022-04-01 23:41:18 -05:00

21 lines
734 B
Solidity

contract C {
function div(uint256 a, uint256 b) public pure returns (uint256) {
// Does not disable div by zero check
unchecked {
return a / b;
}
}
function mod(uint256 a, uint256 b) public pure returns (uint256) {
// Does not disable div by zero check
unchecked {
return a % b;
}
}
}
// ====
// SMTEngine: all
// ----
// Warning 4281: (169-174='a / b'): CHC: Division by zero happens here.\nCounterexample:\n\na = 0\nb = 0\n = 0\n\nTransaction trace:\nC.constructor()\nC.div(0, 0)
// Warning 4281: (349-354='a % b'): CHC: Division by zero happens here.\nCounterexample:\n\na = 0\nb = 0\n = 0\n\nTransaction trace:\nC.constructor()\nC.mod(0, 0)