mirror of
https://github.com/ethereum/solidity
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21 lines
673 B
Solidity
21 lines
673 B
Solidity
pragma experimental SMTChecker;
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contract C {
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uint public x = msg.value - 10; // can underflow
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constructor() payable {}
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}
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contract D {
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function h() internal returns (uint) {
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return msg.value - 10; // can underflow
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}
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function f() public {
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unchecked {
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h(); // unchecked here does not mean h does not underflow
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}
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}
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}
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// ----
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// Warning 3944: (66-80): CHC: Underflow (resulting value less than 0) happens here.\nCounterexample:\nx = 0\n\n\n\nTransaction trace:\nconstructor()
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// Warning 3944: (193-207): CHC: Underflow (resulting value less than 0) happens here.\nCounterexample:\n\n\n\n\nTransaction trace:\nconstructor()\nf()
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