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IAR Embedded Workbench for Arm 9.70.x

MISRAC++2023-9.4.2_f

In this section:
Synopsis

(Required) The structure of a switch statement shall be appropriate

Enabled by default

Yes

Severity/Certainty

Medium/Medium

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Full description

Misplaced case label. Must be in the switch statements outmost block scope. This check is identical to MISRAC++2008-6-4-4, MISRAC2012-Rule-16.2, MISRAC2004-15.1.

Coding standards
MISRA C:2004 15.1

(Required) A switch label shall only be used when the most closely-enclosing compound statement is the body of a switch statement.

MISRA C:2012 Rule-16.2

(Required) A switch label shall only be used when the most closely-enclosing compound statement is the body of a switch statement

MISRA C++ 2008 6-4-4

(Required) A switch-label shall only be used when the most closely-enclosing compound statement is the body of a switch statement.

Code examples

The following code example fails the check and will give a warning:

#include <stdlib.h>

void example(void) {

	switch(rand()) {
		{case 1:}
		case 2:
		case 3:
		default:
	}

}

The following code example passes the check and will not give a warning about this issue:

#include <stdlib.h>

void example(void) {

	switch(rand()) {
		case 1:
		case 2:
		case 3:
		default:
	}

}