Unreferenced variable: Difference between revisions

Revision as of 10:59, 1 September 2020

Revision as of 17:28, 19 October 2022

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{{Short description|Variable which is defined but never used}}

{{Unreferenced|date=February 2007}}

An '''unreferenced variable''' in the [[source code]] of a [[computer program]] is a [[Variable (programming)|variable]] that is defined but which is never used. This may result in a harmless waste of memory. Many [[compiler]]s detect such variables and do not allocate storage for them (i.e., "optimize away" their storage), generally also issuing a warning as they do.