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

LANG.PREPROC.RDEF : Macro Definition of Reserved Name

Summary

A macro is defined or redefined (with #define), and its name

See also: Macro Undefinition of Reserved Name, Declaration of Reserved Name.

Properties

Class Name Macro Definition of Reserved Name
Significance style
Mnemonic LANG.PREPROC.RDEF
Categories
MisraC2025 MisraC2025:1.5 Obsolescent language features shall not be used
  MisraC2025:20.15 #define and #undef shall not be used on a reserved identifier or reserved macro name
MisraC2023 MisraC2023:1.5 Obsolescent language features shall not be used
  MisraC2023:21.1 #define and #undef shall not be used on a reserved identifier or reserved macro name
Misra2012 Misra2012:1.5 Obsolescent language features shall not be used
  Misra2012:21.1 #define and #undef shall not be used on a reserved identifier or reserved macro name
Misra2004 Misra2004:20.1 Reserved identifiers, macros and functions in the standard library, shall not be defined, redefined or undefined
AUTOSARC++14 AUTOSARC++14:A16-0-1 The pre-processor shall only be used for unconditional and conditional file inclusion and include guards, and using the following directives: (1) #ifndef, (2) #ifdef, (3) #if, (4) #if defined, (5) #elif, (6) #else, (7) #define, (8) #endif, (9) #include.
  AUTOSARC++14:A17-0-1 Reserved identifiers, macros and functions in the C++ standard library shall not be defined, redefined or undefined.
MisraC++2008 MisraC++2008:17-0-1 Reserved identifiers, macros and functions in the standard library shall not be defined, redefined or undefined.
Availability Available for C and C++.
Enabling Checks for this warning class are disabled by default. To enable them, add the following WARNING_FILTER rule to the project configuration file. 
WARNING_FILTER += allow class="Macro Definition of Reserved Name"

Example 

#define printf sprintf    /* 'Macro Definition of Reserved Name' warning issued here */

#define printf fsprintf   /* 'Macro Definition of Reserved Name' warning issued here
                           * ('Bad Macro Redefine' warning also issued)
                           */

#define NULL 0            /* 'Macro Definition of Reserved Name' warning issued here */

#define _mymacro 1        /* 'Macro Definition of Reserved Name' warning issued here */

#define mymacro 1                        /* not a reserved name */

Relevant Configuration File Parameters

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

 

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