mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
39 lines
1.0 KiB
Solidity
39 lines
1.0 KiB
Solidity
contract C {
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function index(uint256 len) public returns (bool)
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{
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uint[] memory array = new uint[](len);
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for (uint256 i = 0; i < len; i++)
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array[i] = i + 1;
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for (uint256 i = 0; i < len; i++)
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require(array[i] == i + 1, "Unexpected value in array!");
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return array.length == len;
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}
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function accessIndex(uint256 len, int256 idx) public returns (uint256)
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{
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uint[] memory array = new uint[](len);
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for (uint256 i = 0; i < len; i++)
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array[i] = i + 1;
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return array[uint256(idx)];
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}
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}
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// ====
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// compileViaYul: also
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// ----
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// index(uint256): 0 -> true
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// index(uint256): 10 -> true
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// index(uint256): 20 -> true
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// index(uint256): 0xFF -> true
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// gas irOptimized: 167533
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// gas legacy: 248854
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// gas legacyOptimized: 152640
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// accessIndex(uint256,int256): 10, 1 -> 2
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// accessIndex(uint256,int256): 10, 0 -> 1
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// accessIndex(uint256,int256): 10, 11 -> FAILURE, hex"4e487b71", 0x32
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// accessIndex(uint256,int256): 10, 10 -> FAILURE, hex"4e487b71", 0x32
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// accessIndex(uint256,int256): 10, -1 -> FAILURE, hex"4e487b71", 0x32
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