QA·C Help - 0888

	0888	[U] 'defined' requires an identifier as an argument.

Explicitly undefined		REFERENCE - ISO:C90-6.8.1 Conditional Inclusion - Semantics

This 'defined' operator has been misused.

For example:


/*PRQA S 553,2017 ++*/

#if defined(ABC)                   /* OK */
int a = 1;
#endif

#if defined                        /* Message 0887 */
int b = 1;
#endif

#if defined ( )                    /* Message 0888 and also 0887 and 0897 */
int c = 1;
#endif

#if defined (-X)                   /* Message 0888 and also 0887 and 0897 */
int d = 1;
#endif

#if defined("filename")            /* Message 0888 and also 0887 and 0897 */
int e = 1;
#endif

#if defined 123                    /* Message 0887 and also 0897 */
int f = 1;
#endif

MISRA-C:2004 Rules applicable to message 0888:

Rule 1.2 (Required)	No reliance shall be placed on undefined or unspecified behaviour.
Rule 19.14 (Required)	The defined preprocessor operator shall only be used in one of the two standard forms.

See also:

0887 [U] Use of 'defined' must match either 'defined(identifier)' or 'defined identifier'.
0897 [S] Missing operator in '#if' or '#elif' expression.

QA·C Source Code Analyser 8.1
MISRA-C:2004 Compliance Module 3.2
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