Unused Value

Reports the variable values that are never used after being assigned. This can happen in the following cases:

the variable is never read after the assignment
the value is overwritten by another assignment before it is accessed for reading
the variable initializer is redundant (for one of the above two reasons)
the variable itself is never used.

Example:

  class C {
    int field;

    void foo() {
      field = unused_value;
    }

    void bar() {
      use(field);
      foo();
    }
  };

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

UnusedValue

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | C/C++ | Data Flow Analysis

Use the checkbox below to have this inspection ignore variable initializers.

Inspection ID: UnusedValue

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection UnusedValue

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

CLion 2025.2

Inspection Details
By default bundled with:	CLion 2025.2,
Can be installed with plugin:	CLion, 2025.2

Last modified: 18 September 2025