solidity/test/libsolidity/smtCheckerTests/modifiers/modifier_code_after_placeholder.sol
2021-01-12 14:00:07 +01:00

25 lines
608 B
Solidity

pragma experimental SMTChecker;
contract C
{
uint x;
modifier m {
require(x > 0);
_;
// Fails because of overflow behavior.
assert(x > 1);
}
function f() m public {
assert(x > 0);
unchecked { x = x + 1; }
}
function g(uint _x) public {
x = _x;
}
}
// ----
// Warning 6328: (136-149): CHC: Assertion violation happens here.\nCounterexample:\nx = 0\n\nTransaction trace:\nC.constructor()\nState: x = 0\nC.g(115792089237316195423570985008687907853269984665640564039457584007913129639935)\nState: x = 115792089237316195423570985008687907853269984665640564039457584007913129639935\nC.f()