solidity/test/libsolidity/semanticTests/viaYul/array_memory_index_access.sol
2019-07-09 15:36:02 +02:00

36 lines
899 B
Solidity

contract C {
function index(uint256 len) public returns (bool)
{
uint[] memory array = new uint[](len);
for (uint256 i = 0; i < len; i++)
array[i] = i + 1;
for (uint256 i = 0; i < len; i++)
require(array[i] == i + 1, "Unexpected value in array!");
return array.length == len;
}
function accessIndex(uint256 len, int256 idx) public returns (uint256)
{
uint[] memory array = new uint[](len);
for (uint256 i = 0; i < len; i++)
array[i] = i + 1;
return array[uint256(idx)];
}
}
// ====
// compileViaYul: true
// ----
// index(uint256): 0 -> true
// index(uint256): 10 -> true
// index(uint256): 20 -> true
// index(uint256): 0xFF -> true
// accessIndex(uint256,int256): 10,1 -> 2
// accessIndex(uint256,int256): 10,0 -> 1
// accessIndex(uint256,int256): 10,11 -> FAILURE
// accessIndex(uint256,int256): 10,10 -> FAILURE
// accessIndex(uint256,int256): 10,-1 -> FAILURE