C and C++


LANG.PREPROC.STAR : Macro Uses Unary * Operator

Summary

A macro definition uses the unary * ("dereference") operator.

Properties

Class Name Macro Uses Unary * Operator
Significance style
Mnemonic LANG.PREPROC.STAR
Categories
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.
CWE CWE:710 Improper Adherence to Coding Standards
POW10 POW10:9 Limit the use of pointers. Use no more than two levels of dereferencing per expression.
JPL JPL:28 Do not hide dereference operations inside macros or typedefs.
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 Uses Unary * Operator"

Example

/* 'Macro Uses Unary * Operator' warning issued on following line */
#define lang_preproc_star(a) \
    (*(a))

Relevant Configuration File Parameters

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