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MISRA C:2012 Rule 20.5

#undef should not be used

Description

Rule Definition

#undef should not be used.

Rationale

#undef can make the software unclear which macros exist at a particular point within a translation unit.

Additional Message in Report

#undef shall not be used.

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: Readability

See Also

Topics