mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
28 lines
923 B
Solidity
28 lines
923 B
Solidity
contract C {
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uint[] a;
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uint l;
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function p() public {
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require(a.length < type(uint).max - 1);
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a.push();
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++l;
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}
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function q() public {
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require(a.length > 0);
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a.pop();
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--l;
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}
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function r() public view returns (uint) {
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require(l > 0);
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return a[l]; // oob access
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}
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}
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// ====
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// SMTEngine: all
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// SMTIgnoreOS: macos
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// ----
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// Warning 4984: (112-115): CHC: Overflow (resulting value larger than 2**256 - 1) might happen here.
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// Warning 3944: (181-184): CHC: Underflow (resulting value less than 0) might happen here.
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// Warning 6368: (259-263): CHC: Out of bounds access happens here.\nCounterexample:\na = [0], l = 1\n = 0\n\nTransaction trace:\nC.constructor()\nState: a = [], l = 0\nC.p()\nState: a = [0], l = 1\nC.r()
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// Warning 2661: (112-115): BMC: Overflow (resulting value larger than 2**256 - 1) happens here.
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// Warning 4144: (181-184): BMC: Underflow (resulting value less than 0) happens here.
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