[previous] 0848 [next] [U] Attempting to #undef '%s', which is a predefined macro name.
Explicitly undefined REFERENCE - ISO:C90-6.8.8 Predefined Macro Names

You have attempted to undefine a pre-defined macro name. This is not allowed.

Pre-defined macro names specified in ISO:C90 include '__LINE__', '__FILE__', '__DATE__', '__TIME__' and '__STDC__'. None of these macros can be either redefined or undefined.

For example: 


/*PRQA S 553,841,2017 ++*/

#undef __STDC__                 /* Message 0848 */

MISRA C:2012 Rules applicable to message 0848:

Rule-1.3  (Required) There shall be no occurrence of undefined or critical unspecified behaviour
Rule-21.1  (Required) #define and #undef shall not be used on a reserved identifier or reserved macro name

See also:

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
© 2012 Programming Research.
www.programmingresearch.com 		Personality Groups | Glossary | Message Index | MISRA C:2012 Rule Index Contents