LANG.ID.NU.MK : Macro Name is C Keyword

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CodeSonar^® 9.2p0

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C and C++

LANG.ID.NU.MK : Macro Name is C Keyword

Summary

A preprocessor macro is defined with a name that (exactly) matched a C keyword.

Properties

Class Name

Macro Name is C Keyword

Significance

style

Mnemonic

LANG.ID.NU.MK

Categories

MisraC2025	MisraC2025:20.4	A macro shall not be defined with the same name as a keyword
MisraC2023	MisraC2023:20.4	A macro shall not be defined with the same name as a keyword
Misra2012	Misra2012:20.4	A macro shall not be defined with the same name as a keyword
Misra2004	Misra2004:19.4	C macros shall only expand to a braced initialiser, a constant, a string literal, a parenthesised expression, a type qualifier, a storage class specifier, or a do-whilezero construct
CWE	CWE:710	Improper Adherence to Coding Standards
CERT-CPP	CERT-CPP:DCL51-CPP	Do not declare or define a reserved identifier
POW10	POW10:8	Limit the use of the preprocessor to file inclusion and simple macros.
JPL	JPL:20	Make only very limited use of the C pre-processor.

Availability

Available for C and 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="Macro Name is C Keyword"

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

#define for 1  /* 'Macro Name is C Keyword' warning issued here */       

#define FOR 1                           /* not an exact match to keyword 'for' */

Relevant Configuration File Parameters

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

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