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https://github.com/ethereum/solidity
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20 lines
490 B
Solidity
20 lines
490 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 = 127;
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int8 y = x + 1;
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assert(y == -128);
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y = x + 127;
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assert(y == -2);
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x = -127;
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y = x + -127;
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assert(y == 2);
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}
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}
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// ----
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// Warning 4984: (117-122): Overflow (resulting value larger than 127) happens here
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// Warning 4984: (151-158): Overflow (resulting value larger than 127) happens here
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// Warning 3944: (197-205): Underflow (resulting value less than -128) happens here
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