mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
20 lines
475 B
Solidity
20 lines
475 B
Solidity
pragma experimental SMTChecker;
|
|
|
|
contract C
|
|
{
|
|
function f(int8 x) public pure returns (int8) {
|
|
x = 127;
|
|
int8 y = x + 1;
|
|
assert(y == -128);
|
|
y = x + 127;
|
|
assert(y == -2);
|
|
x = -127;
|
|
y = x + -127;
|
|
assert(y == 2);
|
|
}
|
|
}
|
|
// ----
|
|
// Warning: (117-122): Overflow (resulting value larger than 127) happens here
|
|
// Warning: (151-158): Overflow (resulting value larger than 127) happens here
|
|
// Warning: (197-205): Underflow (resulting value less than -128) happens here
|