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https://github.com/ethereum/solidity
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16 lines
563 B
Solidity
16 lines
563 B
Solidity
pragma experimental SMTChecker;
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contract C {
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function add(uint16 a, uint16 b) public pure returns (uint16) {
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unchecked {
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return a + b; // overflow not reported
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}
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}
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function f(uint16 a) public pure returns (uint16) {
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return add(a, 0x100) + 0x100; // should overflow on `+ 0x100`
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}
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}
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// ----
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// Warning 4984: (273-294): CHC: Overflow (resulting value larger than 65535) happens here.\nCounterexample:\n\na = 65024\n = 0\n\nTransaction trace:\nC.constructor()\nC.f(65024)\n C.add(65024, 256) -- internal call
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