mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
23 lines
489 B
Solidity
23 lines
489 B
Solidity
pragma experimental SMTChecker;
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abstract contract A {
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bool s;
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function f() public view mod {
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assert(s); // holds for B
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assert(!s); // fails for B
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}
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modifier mod() virtual;
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}
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contract B is A {
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modifier mod() virtual override {
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bool x = true;
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s = x;
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_;
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}
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}
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// ----
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// Warning 5740: (95-156): Unreachable code.
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// Warning 6328: (127-137): CHC: Assertion violation happens here.\nCounterexample:\ns = true\n\n\n\nTransaction trace:\nB.constructor()\nState: s = false\nA.f()
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