Affects PMD Version:
6.30.0
Rule: UnusedAssignment
Property reportUnusedVariables=true
Description:
For-each variable is flagged as unused when used as part of index expression while accessing an array value.
Code Sample demonstrating the issue:
package ds;
import static java.lang.System.arraycopy;
import static java.util.Arrays.fill;
public class RadixSort {
private static final int TEN = 10;
int[] a;
void countSort(int exp) {
int[] output = new int[a.length];
int[] count = new int[TEN];
fill(count, 0);
for (int val : a) // error flagged here
count[(val / exp) % TEN]++;
for (int i = 1; i < TEN; i++)
count[i] += count[i - 1];
for (int i = a.length - 1; i >= 0; i--) {
output[count[(a[i] / exp) % TEN] - 1] = a[i];
count[(a[i] / exp) % TEN]--;
}
arraycopy(output, 0, a, 0, a.length);
}
}
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