mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
14 lines
521 B
Solidity
14 lines
521 B
Solidity
|
pragma experimental SMTChecker;
|
||
|
|
|
||
|
|
contract C {
|
||
|
|
function add(uint16 a, uint16 b) public pure returns (uint16) {
|
||
|
|
return a + b; // can overflow
|
||
|
|
}
|
||
|
|
|
||
|
|
function f(uint16 a, uint16 b, uint16 c) public pure returns (uint16) {
|
||
|
|
unchecked { return add(a, b) + c; } // add can still overflow, `+ c` can't
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// ----
|
||
|
|
// Warning 4984: (129-134): CHC: Overflow (resulting value larger than 65535) happens here.\nCounterexample:\n\na = 1\nb = 65535\n = 0\n\nTransaction trace:\nconstructor()\nadd(1, 65535)
|