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MISRA C:2012 Rule 16.1

All switch statements shall be well-formed

Description

Rule Definition

All switch statements shall be well-formed

Rationale

The syntax for switch statements in C is not particularly rigorous and can allow complex, unstructured behavior. This rule and other rules impose a simple consistent structure on the switch statement.

Polyspace Implementation

Following the MISRA™ specifications, the coding rules checker also raises a violation of rule 16.1 if a switch statement violates one of these rules: 16.2, 16.3, 16.4, 16.5 or 16.6.

Additional Message in Report

All messages in report file begin with "MISRA-C switch statements syntax normative restriction."

  • Initializers shall not be used in switch clauses.

  • The child statement of a switch shall be a compound statement.

  • All switch clauses shall appear at the same level.

  • A switch clause shall only contain switch labels and switch clauses, and no other code.

  • A switch statement shall only contain switch labels and switch clauses, and no other 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: Switch Statements
Category: Required
AGC Category: Advisory

Version History

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See Also

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