[previous] 3003 [next] This character constant is being interpreted as a NULL pointer constant.
Pointers

A null character constant ('\0') is being assigned to a pointer. This is probably a mistake. Perhaps the intention was to assign a null pointer constant. If so, the mistake is harmless but confusing. A null character is simply a constant of type int and it will be implicitly converted to a null pointer constant.

For example: 


/*PRQA S 2017,3211,3408,3625 ++*/

#define NULL (void *)0

char *p = NULL;          /* OK */
char *q = 0;             /* OK */
char *r = '\0';          /* Message 3003 */

QA·C Source Code Analyser 8.1.2
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