LANG.TYPE.MI.PBC : Multiple Inheritance with Public Base Class

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C and C++

LANG.TYPE.MI.PBC : Multiple Inheritance with Public Base Class

要旨

A class inherits from multiple base classes, and publicly inherits at least one class that is not an interface.

A class C is considered an interface class if either of the following is true.

C has at least one method, and all methods of C are pure virtual, and C has at most one scalar data member.
or
C is inherited as a "mixin" class: an instantiation of a template with at least one parameter that is the inheriting class. This is sometimes referred to as the Curiously Repeating Template Pattern (CRTP).

プロパティ

クラス名

Multiple Inheritance with Public Base Class

日本語クラス名

Multiple Inheritance with Public Base Class

クラス分類

スタイル (style)

ニーモニック

LANG.TYPE.MI.PBC

カテゴリー

CWE	CWE:1055	Multiple Inheritance from Concrete Classes
JSF++	JSF++:88	Multiple inheritance shall only be allowed in the following restricted form: n interfaces plus m private implementations, plus at most one protected implementation.

対応言語

C++ のみ利用可能です。 C は利用できません。

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無効になっており、プロジェクトには非正規の C向けAST が必要になります。有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 ルールと RETAIN_UNNORMALIZED_C_AST 設定を追加してください。

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Multiple Inheritance with Public Base Class"

注：非正規化された AST を継続して使用した場合、使用ディスク容量が増加し解析時間が長くなる可能性があります。

例

class base0 {};

class base1 {};

class derA : public base0, public base1 {}; // 'Multiple Inheritance with Public Base Class'
                                            // warning issued here

class derB: public base0 {};                                   // not multiple inheritance

class derC: private base0, private base1 {};                   // not public

LANG.TYPE.MI.PBC : Multiple Inheritance with Public Base Class

要旨

プロパティ

例

関連のある設定ファイルパラメータ