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https://github.com/ethereum/solidity
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17 lines
389 B
Solidity
17 lines
389 B
Solidity
pragma experimental SMTChecker;
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contract C
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{
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function f(int8 x) public pure returns (int8) {
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x = 100;
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int8 y;
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unchecked { y = x * 2; }
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assert(y == -56);
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y = x * 100;
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assert(y == 16);
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return y;
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}
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}
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// ----
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// Warning 4984: (169-176): CHC: Overflow (resulting value larger than 127) happens here.\nCounterexample:\n\nx = 100\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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