mirror of
https://github.com/ethereum/solidity
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15 lines
515 B
Solidity
15 lines
515 B
Solidity
contract C {
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modifier add(uint16 a, uint16 b) {
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unchecked { a + b; } // overflow not reported
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_;
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}
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function f(uint16 a, uint16 b, uint16 c) public pure add(a, b) returns (uint16) {
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return b + c; // can overflow
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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: (225-230): CHC: Overflow (resulting value larger than 65535) happens here.\nCounterexample:\n\na = 65535\nb = 1\nc = 65535\n = 0\na = 65535\nb = 1\n\nTransaction trace:\nC.constructor()\nC.f(65535, 1, 65535)
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