Code inspection: Suspicious use of variable with discard-like name

This inspection reports assignments or out _ arguments where _ is a real variable, not a discard. This is easy to miss because _ usually looks like a discard. In this case, the code writes into an actual variable instead of intentionally ignoring the value.

Example

                class C
                {
                    void M()
                    {
                        var _ = 0;
                        _ = Compute();
                    }
                }
            

                class C
                {
                    void M()
                    {
                        var ignored = 0;
                        _ = Compute();
                    }
                }
            

Quick-fix

Rename the local variable _ to a different name, or use a discard if it was intended.

01 April 2026