Static Analyzer for Solidity
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slither/tests/detectors/controlled-array-length/0.5.16/array_length_assignment.sol

46 lines
1.0 KiB

contract ArrayLengthAssignment {
uint x;
uint120[] arr;
uint120[] arr2;
uint256[] arr3;
constructor() public {
x = 7;
}
struct TestStructWithArray {
uint[] x;
uint[][] y;
}
struct TestStructWithStructWithArray {
TestStructWithArray subStruct;
uint[] z;
}
TestStructWithArray a;
TestStructWithStructWithArray b;
function f(uint param, uint param2) public {
x += 1;
if(x > 3) {
arr.length = 7;
arr.length = param;
}
else{
// Array length that is incremented/decremented should not be found.
x = arr2.length++;
x = 7 + 3;
}
// Array length setting in structs should not be detected too.
a.x.length++;
a.x.length = param;
// Array length setting in embedded structs should not be detected too.
b.subStruct.x.length--;
b.subStruct.x.length = param + 1;
arr3[0] = param2;
arr3.length++;
}
}