Unused local variable — CodeQL query help documentation
CodeQL docs
Unused local variable
ID: cpp/unused-local-variable
Kind: problem
Security severity:
Severity: recommendation
Precision: high
Tags:
- maintainability
- useless-code
- external/cwe/cwe-563
Query suites:
- cpp-security-and-quality.qls
Click to see the query in the CodeQL repository
This rule finds local variables that are never accessed after declaration. Unused variables should be removed to increase readability and avoid misuse.
Recommendation
Removing these unused local variables will make code more readable.
Example
{
int x = 0; //x is unused
int y = 0;
cout << y;
}
References