MISRA C:2012 Rule 20.10
The # and ## preprocessor operators should not be used
Description
Rule Definition
The # and ## preprocessor operators should not be used1 .
Rationale
The order of evaluation associated with multiple #,
multiple ##, or a mix of # and ## preprocessor
operators is unspecified. In some cases, it is therefore not possible
to predict the result of macro expansion.
The use of ## can result in obscured code.
Troubleshooting
If you expect a rule violation but do not see it, refer to Diagnose Why Coding Standard Violations Do Not Appear as Expected.
Check Information
| Group: Preprocessing Directives |
| Category: Advisory |
| AGC Category: Advisory |
1 All MISRA coding rules and directives are © Copyright The MISRA Consortium Limited 2021.
The MISRA coding standards referenced in the Polyspace® Bug Finder™ documentation are from the following MISRA standards:
MISRA C:2004
MISRA C:2012
MISRA C:2023
MISRA C++:2008
MISRA C++:2023
MISRA and MISRA C are registered trademarks of The MISRA Consortium Limited 2021.
