solidity/test/libsolidity/smtCheckerTests/overflow/overflow_mul_signed.sol
2021-04-08 21:03:39 +02:00

17 lines
398 B
Solidity

contract C
{
function f(int8 x) public pure returns (int8) {
x = 100;
int8 y;
unchecked { y = x * 2; }
assert(y == -56);
y = x * 100;
assert(y == 16);
return y;
}
}
// ====
// SMTEngine: all
// ----
// Warning 4984: (136-143): CHC: Overflow (resulting value larger than 127) happens here.\nCounterexample:\n\nx = 100\n = 0\ny = (- 56)\n\nTransaction trace:\nC.constructor()\nC.f(0)