mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
21 lines
904 B
Solidity
21 lines
904 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 6321: (87-91): Unnamed return variable can remain unassigned. Add an explicit return with value to all non-reverting code paths or name the variable.
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// Warning 4984: (117-122): CHC: Overflow (resulting value larger than 127) happens here.\nCounterexample:\n\nx = 127\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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// Warning 4984: (151-158): CHC: Overflow (resulting value larger than 127) happens here.\nCounterexample:\n\nx = 127\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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// Warning 3944: (197-205): CHC: Underflow (resulting value less than -128) happens here.\nCounterexample:\n\nx = (- 127)\n = 0\n\nTransaction trace:\nconstructor()\nf(0)
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