CodeQL documentation


ID: cs/self-assignment
Kind: problem
Security severity: 
Severity: error
Precision: high
   - reliability
   - correctness
   - logic
Query suites:
   - csharp-security-and-quality.qls

Click to see the query in the CodeQL repository

Assigning a variable to itself is redundant and often an indication of a mistake in the code.


Check the assignment carefully for mistakes. If the assignment is truly redundant and not simply incorrect then remove it.


In this example the programmer clearly intends to assign to this.i but made a mistake.

class SelfAssignment
    private int i;
    public SelfAssignment(int i)
        i = i;
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