mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
24 lines
516 B
Solidity
24 lines
516 B
Solidity
pragma experimental SMTChecker;
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abstract contract A {
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uint s;
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function f() public mod(s) {}
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modifier mod(uint x) virtual;
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}
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contract B is A {
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modifier mod(uint x) override {
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require(x == 42);
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_;
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assert(x == 42); // should hold
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assert(x == 0); // should fail
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}
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function set(uint x) public {
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s = x;
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}
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}
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// ----
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// Warning 6328: (242-256): CHC: Assertion violation happens here.\nCounterexample:\ns = 42\nx = 42\n\nTransaction trace:\nB.constructor()\nState: s = 0\nB.set(42)\nState: s = 42\nA.f()
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