Identifies line labels that are never referenced, and therefore superfluous.

Inspection type: CodeQualityIssues

Default severity: Warning


Line labels are useful for GoTo, GoSub, Resume, and On Error statements; but the intent of a line label can be confusing if it isn't referenced by any such instruction


The following quick-fixes are available for this inspection:

  • IgnoreOnce: Adds an '@Ignore annotation to ignore a specific inspection result. Applicable to all inspections whose results can be annotated in a module.
  • IgnoreInModule: Adds an '@IgnoreModule annotation to ignore a inspection results for a specific inspection inside a whole module. Applicable to all inspections whose results can be annotated in a module.
  • RemoveUnusedDeclaration: Removes the declaration for a constant, variable, procedure, or line label that isn't used. This operation can break the code if the declaration is actually in use but Rubberduck couldn't find where.


Each example is a self-contained MCVE showing the feature in a single specific scenario.

Standard Module
Named Module1 by default, these are general-purpose standard procedural modules.
Class Module
Named Class1 by default, these modules define the default interface for an object of that type.
Predeclared Class
A class module with its VB_PredeclaredId attribute set to True (with or without a @PredeclaredId annotation).
Interface Module
Abstract interfaces are class modules (with or without an @Interface annotation) whose default interface is not a class type intended to be instantiated.
UserForm Module
A predeclared class with a design-time visual designer using the MSForms UI framework.
Document Module
Owned by the host application, these class modules belong to the host document and may handle various events fired by the host application.

The following code should trigger this inspection:


Public Sub DoSomething()
    ' On Error GoTo ErrHandler ' (commented-out On Error statement leaves line label unreferenced)
    ' ...
    Exit Sub
    ' ...
End Sub

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