MISRA C:2012 Rule 16.6

Every switch statement shall have at least two switch-clauses

Description

Rule Definition

Every switch statement shall have at least two switch-clauses¹ .

Rationale

A switch statement with a single path is redundant and can indicate a programming error.

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

R2024a: Noncompliant switch statement with multiple cases and a fallthrough

In R2024a, the rule checker reports a violation when a switch statement has two cases, with one of the cases being a fallthrough to the other case. This is a violation because there is only a single path despite the switch statement having multiple cases.

void example (int i) {
    switch(i) {            // Noncompliant
        case 1:
        case 2:
            break;
    }
}