mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
22 lines
518 B
Solidity
22 lines
518 B
Solidity
pragma experimental SMTChecker;
|
|
|
|
contract C
|
|
{
|
|
function f(int8 x) public pure returns (int8) {
|
|
x = -2;
|
|
int8 y = x - 127;
|
|
assert(y == 127);
|
|
x = -128;
|
|
y = x - 127;
|
|
assert(y == 1);
|
|
x = 127;
|
|
y = x - (-127);
|
|
assert(y == -2);
|
|
return y;
|
|
}
|
|
}
|
|
// ----
|
|
// Warning 3944: (116-123): Underflow (resulting value less than -128) happens here.
|
|
// Warning 3944: (163-170): Underflow (resulting value less than -128) happens here.
|
|
// Warning 4984: (207-217): Overflow (resulting value larger than 127) happens here.
|