mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
25 lines
617 B
Solidity
25 lines
617 B
Solidity
contract C
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{
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uint x;
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modifier m {
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require(x > 0);
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_;
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// Fails because of overflow behavior.
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assert(x > 1);
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}
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function f() m public {
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assert(x > 0);
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unchecked { x = x + 1; }
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}
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function g(uint _x) public {
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x = _x;
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}
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}
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// ====
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// SMTEngine: all
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// ----
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// Warning 6328: (103-116='assert(x > 1)'): CHC: Assertion violation happens here.\nCounterexample:\nx = 0\n\nTransaction trace:\nC.constructor()\nState: x = 0\nC.g(115792089237316195423570985008687907853269984665640564039457584007913129639935)\nState: x = 115792089237316195423570985008687907853269984665640564039457584007913129639935\nC.f()
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