mirror of
https://github.com/ethereum/solidity
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20 lines
486 B
Solidity
20 lines
486 B
Solidity
contract C
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{
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function f(uint8 x) public pure returns (uint8) {
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uint8 y;
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unchecked { y = x + 255; }
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require(y >= x);
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x = 255;
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unchecked { y = x + 1; }
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assert(y == 0);
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y = x + 255;
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assert(y == 254);
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return y;
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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 4984: (185-192): CHC: Overflow (resulting value larger than 255) happens here.
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// Info 1391: CHC: 2 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
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