BADMACRO.STDARG_H : Use of <stdarg.h> Feature

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CodeSonar^® 9.2p0

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BADMACRO.STDARG_H : Use of <stdarg.h> Feature

Summary

A use of one of the following macros from <stdarg.h>: va_arg(), va_start(), va_end(), va_copy().

Properties

MisraC2025

MisraC2025:17.1

The standard header file <stdarg.h> shall not be used

MisraC2023

MisraC2023:17.1

The standard header file <stdarg.h> shall not be used

Misra2012

Misra2012:17.1

The standard header file <stdarg.h> shall not be used

AUTOSARC++14

AUTOSARC++14:A1-1-1

All code shall conform to ISO/IEC 14882:2014 - Programming Language C++ and shall not use deprecated features.

MisraC++2023

MisraC++2023:4.1.2

Deprecated features should not be used

MisraC++2023:21.10.1

The features of <cstdarg> shall not be used

CERT-C

CERT-C:EXP47-C

Do not call va_arg with an argument of the incorrect type

CERT-C:MSC38-C

Do not treat a predefined identifier as an object if it might only be implemented as a macro

CERT-C:MSC39-C

Do not call va_arg() on a va_list that has an indeterminate value

CERT-CPP

CERT-CPP:EXP58-CPP

Pass an object of the correct type to va_start

Example

#include <stdarg.h>

int var_add ( int numargs, ... ){    
    int retval=0;
    int i;
    va_list args;                        /* 'Use of <stdarg.h> Feature' warning issued here */
    
    va_start(args, numargs);             /* 'Use of <stdarg.h> Feature' warning issued here */
    for (i = 0; i < numargs; i++){
        retval += va_arg(args, int);     /* 'Use of <stdarg.h> Feature' warning issued here */
    }
    va_end(args);                        /* 'Use of <stdarg.h> Feature' warning issued here */
    return retval;
}

Relevant Configuration File Parameters

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