mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
17 lines
500 B
Solidity
17 lines
500 B
Solidity
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pragma experimental SMTChecker;
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contract C {
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uint[][] a;
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function p() public { a.push(); }
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function q(uint i) public {
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require(i < a.length);
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a[i].push();
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}
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function r(uint i, uint j) public view returns (uint) {
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require(i < a.length);
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return a[i][j]; // unsafe access
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}
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}
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// ----
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// Warning 6368: (257-264): CHC: Out of bounds access happens here.\nCounterexample:\na = [[]]\ni = 0\nj = 0\n = 0\n\nTransaction trace:\nC.constructor()\nState: a = []\nC.p()\nState: a = [[]]\nC.r(0, 0)
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