JavaScript is not currently enabled, but is required for full CodeSonar manual search and browse functionality.

If you are viewing this file in your hub's Web GUI, enable JavaScript in your browser: you will also need it for GUI functionality.

If you opened this file directly from disk, your browser may be directly suppressing JavaScript functionality: certain browsers perform this suppression on local files (but not files delivered by web servers) for security reasons.

CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
Java


JAVA.CLASS.IOF.F : Instanceof Always False (Java)

要旨

An instanceof test is always false.

This checker looks for instanceof operators that are useless, in the sense that they are always true or always false and can hence be removed from the code. This can improve the efficiency of the program. Moreover, a useless instanceof test is often the sign of a programming bug.

プロパティ

クラス名 Instanceof Always False (Java)
日本語クラス名 Instanceof Always False (Java)
クラス分類 信頼性 (reliability)
ニーモニック JAVA.CLASS.IOF.F
カテゴリー
CWE CWE:570 Expression is Always False
対応言語 Available for Java and Kotlin.
有効/無効設定 このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル (configuration file)に以下の WARNING_FILTER ルールを追加してください。
WARNING_FILTER += discard class="Instanceof Always False (Java)"

解決法

Check if the instanceof operator can be actually removed and that it is not the sign of an actual programming bug.

関連のある設定ファイルパラメータ

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。

 

To report problems with this documentation, please visit https://support.codesecure.com/.