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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++

LANG.FUNCS.VFMVOF : Virtual Function Missing virtual/override/final

Summary

A function is declared virtual in a base class, but is declared in a derived class without any of {virtual, override, final}.

Properties

Class Name Virtual Function Missing virtual/override/final
Significance style
Mnemonic LANG.FUNCS.VFMVOF
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="Virtual Function Missing virtual/override/final"
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) {};
    virtual void slow(void) {};
    virtual void fast(void) {};
};

class Derived : public Base {
  public:
    void go(void) {}; // 'Virtual Function Missing virtual/override/final' warning issued here
    virtual void stop(void) {};                      // ok: virtual
    void slow(void) override {};                     // ok: override
    void fast(void) final {};                        // ok: final
};

Relevant Configuration File Parameters

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

 

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