LANG.PREPROC.INVALID : Invalid Preprocessor Directive

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A line starts with # but is not a valid preprocessing directive.

Class Name

Invalid Preprocessor Directive

Significance

reliability

Mnemonic

LANG.PREPROC.INVALID

Categories

MisraC2023	MisraC2023:20.13	A line whose first token is # shall be a valid preprocessing directive
Misra2012	Misra2012:20.13	A line whose first token is # shall be a valid preprocessing directive
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:M16-0-8	If the # token appears as the first token on a line, then it shall be immediately followed by a pre-processing token.
MisraC++2008	MisraC++2008:16-0-8	If the # token appears as the first token on a line, then it shall be immediately followed by a preprocessing token.
MisraC++2023	MisraC++2023:19.0.1	A line whose first token is # shall be a valid preprocessing directive

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="Invalid Preprocessor Directive"

/* following is ok: inside a comment*/
/*
#in a comment
*/

#define AAA 2

#ifndef AAA
#define BBB 1
#else1           /* 'Invalid Preprocessor Directive' warning issued here */
#define CCC 2
#endif

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

LANG.PREPROC.INVALID : Invalid Preprocessor Directive

Summary

Properties

Example

Relevant Configuration File Parameters