mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
43 lines
1.2 KiB
Solidity
43 lines
1.2 KiB
Solidity
abstract contract A {
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int x = 0;
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function f() public view mod() {
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assert(x != 0); // does not hold for A, but A is abstract so it should not be reported
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assert(x != 1); // fails for B
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assert(x != 2); // fails for C
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assert(x != 3); // fails for D
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}
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modifier mod() virtual {
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_;
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}
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}
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contract B is A {
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modifier mod() virtual override {
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x = 1;
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_;
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}
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}
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contract C is A {
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modifier mod() virtual override {
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x = 2;
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_;
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}
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}
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contract D is B,C {
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modifier mod() virtual override (B,C){
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x = 3;
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_;
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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 6328: (160-174): CHC: Assertion violation happens here.\nCounterexample:\nx = 1\n\nTransaction trace:\nB.constructor()\nState: x = 0\nA.f()
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// Warning 6328: (193-207): CHC: Assertion violation happens here.\nCounterexample:\nx = 2\n\nTransaction trace:\nC.constructor()\nState: x = 0\nA.f()
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// Warning 6328: (226-240): CHC: Assertion violation happens here.\nCounterexample:\nx = 3\n\nTransaction trace:\nD.constructor()\nState: x = 0\nA.f()
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// Info 1180: Contract invariant(s) for :C:\n((x = 0) || (x = 2))\nContract invariant(s) for :D:\n((x = 0) || (x = 3))\nContract invariant(s) for :B:\n((x = 0) || (x = 1))\n
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