[previous] 0165 [next] [U] Unknown length modifier used with 'X' conversion specifier, number %s.
Explicitly undefined REFERENCE - ISO:C90-7.9.6.1 Formatted input/output functions

An unknown length modifier is being used in conjunction with a '%X' conversion specifier in a printf format string.

Valid length modifiers for a '%X' conversion specifier are "h" and "l" - indicating that the corresponding argument is of type unsigned short or unsigned long.

In the code example below "L" has been used; but "L" is only valid with %e, %f or %g. 


/*PRQA S 185,336,602,1307,2017,3122,3200,3209,3227,3408,3602,3625 ++*/

#include <stdio.h>

extern void foo(unsigned int itot, unsigned short stot, unsigned long ltot)
{
    printf("The number in hex form is %X",  itot);  /* OK */
    printf("The number in hex form is %hX", stot);  /* OK */
    printf("The number in hex form is %lX", ltot);  /* OK */

    printf("The number in hex form is %LX", itot);  /* Message 0165 - L flag is invalid */
}

MISRA C:2012 Rules applicable to message 0165:

Rule-1.3  (Required) There shall be no occurrence of undefined or critical unspecified behaviour

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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