LANG.FUNCS.UVS : Unnecessary virtual Specifier

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CodeSonar^® 9.2p0

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C and C++

LANG.FUNCS.UVS : Unnecessary virtual Specifier

Summary

One of the following.

A member function is declared with both virtual and override specifiers.
A member function is declared with both virtual and final specifiers.

Properties

Class Name

Unnecessary virtual Specifier

Significance

redundancy

Mnemonic

LANG.FUNCS.UVS

Categories

AUTOSARC++14	AUTOSARC++14:A10-3-1	Virtual function declaration shall contain exactly one of the three specifiers: (1) virtual, (2) override, (3) final.
MisraC++2023	MisraC++2023:13.3.1	User-declared member functions shall use the virtual, override and final specifiers appropriately

Availability

Available for C++ only (not C).

Enabling

Checks for this warning class are disabled by default, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file.

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Unnecessary virtual Specifier"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

class Base {
  public:
    virtual void go(void) {};
    virtual void stop(void) {};
};

class Derived : public Base {
  public:
    virtual void go(void) override {} // 'Unnecessary virtual Specifier' warning issued here
    virtual void stop(void) final {}  // 'Unnecessary virtual Specifier' warning issued here
  
};

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

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